CN210565031U

CN210565031U - Manual pump bypass valve

Info

Publication number: CN210565031U
Application number: CN201921190802.8U
Authority: CN
Inventors: 余先照; 田立新
Original assignee: Taicang Baowoparker Machinery Technology Co Ltd
Current assignee: Taicang Baowoparker Machinery Technology Co Ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-05-19
Anticipated expiration: 2029-07-26

Abstract

The utility model provides a hand pump bypass valve, belongs to mechanical hydraulic pressure basic part and makes technical field, advances oil joint, switching-over valve and rocking arm including oiling stopper, oil pump oil tank, bypass valve, the oil pump body, oil pump, the oil pump is used for the upset of commercial car driver's cabin, oiling stopper sets up on the up end of the oil pump body, the bypass valve sets up on the lateral wall of oil pump body tip, oil pump business turn over oil joint sets up on the lower tip of the oil pump body to hydraulic oil in the oil pump oil tank advances oil joint through the oil pump and flows out or flow in, switching-over valve and rocking arm all set up on the oil pump body. The oil pump oil filling plug of the manual pump bypass valve has a normal air inlet function, so that the failure of the function of the electric pump caused by the unbalanced pressure in the turnover hydraulic system is prevented; the bypass valve has an oil discharge function and is used for discharging redundant hydraulic oil from the oil path of the oil pump, so that the hydraulic oil is convenient to collect and recycle.

Description

Manual pump bypass valve

Technical Field

The utility model belongs to the technical field of machinery basis spare and manufacturing, specifically, relate to a hand pump bypass valve.

Background

At present, oil-gas balance of a hydraulic system is realized for an oil pump of a middle-heavy cab turnover system through an oil filling plug with a special structure, and the normal use function of the oil pump is met.

However, the oil filling plug with the special structure has a complex internal structure, high raw material purchasing cost, high requirements on skills of testing equipment and technicians in the assembling process and high total processing and manufacturing cost; secondly, under the condition that terminal customers do not comply with standard filling hydraulic oil, hydraulic oil can spill over from the oiling plug, and the spilled hydraulic oil can not be recovered, so that the oil pump, parts below the installation position of the oil pump and the surrounding environment are all polluted, and the environmental sanitation and the appearance quality of the whole vehicle are influenced.

The invention is a solution specially aiming at the oil overflow problem of an oil pump, and thoroughly solves the problems of oil overflow pollution and recovery by improving the structures of an air inlet oil filling plug and an oil discharge bypass valve of the oil pump.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a manual pump bypass valve has solved the unable balance of upset hydraulic system internal pressure and has leaded to the electric pump function inefficacy to and get rid of unnecessary hydraulic oil from the oil pump, be convenient for collect the problem of recycling.

The technical scheme is as follows: the utility model provides a hand pump bypass valve, including oiling stopper, oil pump oil tank, bypass valve, the oil pump body, oil pump business turn over oil swivel, switching-over valve and rocking arm, the oil pump body sets up on the oil pump oil tank, oiling stopper sets up on the up end of the oil pump body, the bypass valve sets up on the lateral wall of oil pump body upper end, oil pump business turn over oil swivel sets up on the lower tip of the oil pump body to hydraulic oil in the oil pump oil tank passes through the oil pump and advances oil swivel outflow or inflow, switching-over valve and rocking arm all set up on the oil pump body. The oil pump oil filling plug of the manual pump bypass valve has a normal air inlet function, so that the failure of the function of the electric pump caused by the unbalanced pressure in the turnover hydraulic system is prevented; the bypass valve has an oil discharge function and is used for discharging redundant hydraulic oil from the oil path of the oil pump, so that the hydraulic oil is convenient to collect and recycle.

Further, foretell manual pump bypass valve, the oiling stopper includes oiling stopper body, first spring holder, first spring and first check valve, the oiling stopper body sets up on the oil pump body to the oil pump body is stretched out to the one end of oiling stopper body, first spring holder setting is in the tip that the oiling stopper body is located the oil pump body, first check valve sets up in the tip that first spring holder was kept away from to the oiling stopper body, first spring setting is between first spring holder and first check valve.

Further, in the manual pump bypass valve, the outer wall of the oil injection plug body is provided with a first groove, the cross section of the first groove is annular, and the first groove is internally provided with a first O-ring which is positioned between the outer wall of the oil injection plug body and the outer wall of the oil pump body.

Furthermore, in the manual pump bypass valve, the protective cover is arranged at the end part of the oil filling plug body extending out of the oil pump body, and the protective cover covers the end part of the oil filling plug body far away from the oil pump body.

Further, foretell manual pump bypass valve, the bypass valve includes second check valve, second spring, bypass valve joint, cutting ferrule nut, cutting ferrule and leads oil pipe, the one end setting that the bypass valve connects is internal at the oil pump, the second check valve sets up in the oil pump, the second spring sets up and stretches into between the tip in the oil pump body at second check valve and bypass valve joint, the cutting ferrule nut cover is established on the tip that the bypass valve connects and stretches out the oil pump body, lead oil pipe's one end and pass through the end connection that cutting ferrule nut and bypass valve joint kept away from the oil pump body, lead oil pipe and the junction cover of cutting ferrule nut and be equipped with the cutting ferrule.

Furthermore, in the manual pump bypass valve, the bypass valve and the reversing valve are respectively arranged on the left side wall and the right side wall of the oil pump body, which are opposite to each other.

Furthermore, in the manual pump bypass valve, the oil filling plug and the oil pump oil inlet and outlet joint are respectively arranged on two opposite side walls of the oil pump body.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: the manual pump bypass valve has the advantages of reasonable structural design, convenient use, low application cost and good adaptability, firstly, the oil pump oil filling plug has a normal air inlet function, and the failure of the function of the electric pump caused by the unbalanced pressure in the turnover hydraulic system is prevented; the oil discharge function of the bypass valve is used for discharging redundant hydraulic oil from the oil circuit in the oil pump, so that the hydraulic oil is convenient to collect and recycle; realize the oil gas balance of the turnover system and prevent leakage, promote the customer satisfaction and have high popularization value.

Drawings

FIG. 1 is a schematic structural view of a manual pump bypass valve according to the present invention;

FIG. 2 is a schematic structural view of the oil plug of the present invention;

fig. 3 is a schematic structural diagram of the bypass valve of the present invention.

In the figure: the oil filling device comprises an oil filling plug 1, an oil filling plug body 11, a first spring seat 12, a first spring 13, a first one-way valve 14, a first groove 15, a first O-shaped ring 16, a protective cover 17, a second O-shaped ring 18, an oil pump oil tank 2, a bypass valve 3, a second one-way valve 31, a second spring 32, a bypass valve joint 33, a clamping sleeve nut 34, a clamping sleeve 35, an oil guide pipe 36, an oil pump body 4, an oil pump inlet and outlet joint 5, a reversing valve 6 and a rocker arm 7.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

As shown in fig. 1, the manual pump bypass valve includes an oil filling plug 1, an oil pump oil tank 2, a bypass valve 3, an oil pump body 4, an oil pump inlet and outlet oil joint 5, a reversing valve 6 and a rocker arm 7, the oil pump body 4 is arranged on the oil pump oil tank 2, the oil filling plug 1 is arranged on the upper end face of the oil pump body 4, the bypass valve 3 is arranged on the side wall of the upper end part of the oil pump body 4, the oil pump inlet and outlet oil joint 5 is arranged on the lower end part of the oil pump body 4, and hydraulic oil in the oil pump oil tank 2 flows out or flows in through the oil pump inlet and outlet oil joint 5, and the reversing valve 6 and. In the structure, the specific position relationship between the oil filling plug 1, the bypass valve 3, the oil pump body 4, the oil pump inlet and outlet joint 5, the reversing valve 6 and the rocker arm 7 and the oil pump tank 2 is that the bypass valve 3 and the reversing valve 6 are respectively arranged on two left and right opposite side walls of the oil pump body 4. The oil filling plug 1 and the oil pump inlet and outlet joint 5 are respectively arranged on two side walls which are opposite up and down of the oil pump body 4. The rocker arm 7 is arranged on the side wall of the oil pump tank 2 opposite to the side wall provided with the oil pump body 4.

The utility model discloses a theory of operation of manual pump bypass valve does: 1) the rocker arm 7 is pressed, hydraulic oil in the oil pump oil tank 2 flows into the cab lifting oil cylinder through the oil pump inlet and outlet joint 5, the oil-gas balance in the turnover hydraulic system is broken through the reduction of the volume of the hydraulic oil in the oil pump oil tank 2, and external air enters the oil pump body 4 through the oil filling plug 1, so that new oil-gas balance is realized; 2) when too much hydraulic oil is added in the oil pump oil tank 2 in a misoperation mode, the reversing valve 6 is operated to reverse the oil pump, the cab lifts the oil cylinder to retract, the hydraulic oil in the oil cylinder flows back to the oil pump oil tank 2 through the oil pump oil inlet and outlet joint 5, the one-way valve in the oil filling plug 1 is closed, the bypass valve 3 is opened after the pressure reaches a set value, and the hydraulic oil flows out through the oil guide pipe and is collected and reused through containers such as a hydraulic oil cup.

Further, the oil plug 1 shown in fig. 2 includes an oil plug body 11, a first spring seat 12, a first spring 13, and a first check valve 14, the oil plug body 11 being provided on the oil pump body 4 with one end of the oil plug body 11 protruding out of the oil pump body 4, the first spring seat 12 being provided in an end portion of the oil plug body 11 located in the oil pump body 4, the first check valve 14 being provided in an end portion of the oil plug body 11 remote from the first spring seat 12, the first spring 13 being provided between the first spring seat 12 and the first check valve 14. The outer wall of the oil injection plug body 11 is provided with a first groove 15, the section of the first groove 15 is circular, an O-shaped ring 16 is arranged in the first groove 15, and the O-shaped ring 16 is located between the outer wall of the oil injection plug body 11 and the outer wall of the oil pump body 4. The first one-way valve 14 is provided with a second O-ring 18. The end part of the oil filling plug body 11 extending out of the oil pump body 4 is provided with a protective cover 17, and the protective cover 17 is covered on the end part of the oil filling plug body 11 far away from the oil pump body 4. The oil filler plug 1 assembly part has the effect of maintaining the oil-gas balance inside a hydraulic system within a set value range, so that the normal work of an electric pump is ensured, and the oil filler plug 1 assembly part is realized through the following steps: 1) the oil injection plug body 11 is arranged on the oil pump body, and in order to prevent the risk of leakage of hydraulic oil, the O-shaped ring I16 is arranged on the oil injection plug body 11; the protective cover 17 is arranged on the oil filling plug body 11 and is used for preventing external foreign matters such as dust, water and the like from entering; the first spring seat 12, the first spring 13 and the first check valve 14 are installed inside the oil plug body 11; 2) when the value of the balance point is lower than the set value of the system, the first check valve 14 and the first spring 13 start to work, and outside air enters the hydraulic system, so that the oil gas is maintained in the design range; 3) when the hydraulic oil in the oil cylinder returns to the oil tank, the pressure of the hydraulic oil in the oil tank rises to generate system back pressure, and the stable operation of the oil cylinder is facilitated.

In addition, the bypass valve 3 shown in fig. 3 includes a second one-way valve 31, a second spring 32, a bypass valve joint 33, a sleeve nut 34, a sleeve 35 and an oil guiding pipe 36, wherein one end of the bypass valve joint 33 is disposed in the oil pump body 4, the second one-way valve 31 is disposed in the oil pump body 4, the second spring 32 is disposed between the ends of the second one-way valve 31 and the bypass valve joint 33 extending into the oil pump body 4, the sleeve nut 34 is sleeved on the end of the bypass valve joint 33 extending out of the oil pump body 4, one end of the oil guiding pipe 36 is connected with the end of the bypass valve joint 33 far away from the oil pump body 4 through the sleeve nut 34, and the sleeve 35 is sleeved at the joint of the oil guiding pipe 36 and the sleeve nut 34. The second check valve 31 is provided with a second O-ring 18. The bypass valve 3 assembly part is used for controlling a system backpressure value and redundant oil recovery, and is specifically realized through the following steps: 1) the component consists of a second one-way valve 31, a second spring 32, a bypass valve joint 33, a clamping sleeve nut 34, a clamping sleeve 35 and an oil guide pipe 36, wherein the second one-way valve 31, the second spring 32 and the bypass valve joint 33 are installed on the oil pump body 4, the clamping sleeve nut 34, the clamping sleeve 35 and the oil guide pipe 36 are installed and fixed on the bypass valve joint 33, and the oil guide pipe 36 cannot fall off in the assembling process; 2) when the pressure of the balance point of the turnover system is less than or equal to the set range, the second check valve 31 is closed; 3) when too much hydraulic oil is added in the oil pump oil tank 2 due to misoperation and the hydraulic oil in the oil cylinder continues to return to the oil tank, the second one-way valve 31 opens the second spring 32 to be compressed, and the redundant hydraulic oil flows out of the overturning system along the bypass valve upper oil guide pipe 36 and is collected by containers such as a hydraulic oil cup and the like to be reused.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. A manual pump bypass valve characterized by: including oiling stopper (1), oil pump oil tank (2), bypass valve (3), the oil pump body (4), oil pump advance oil joint (5), switching-over valve (6) and rocking arm (7), the oil pump body (4) sets up on oil pump oil tank (2), oiling stopper (1) sets up on the up end of the oil pump body (4), bypass valve (3) set up on the lateral wall of the upper end of the oil pump body (4), oil pump business turn over oil joint (5) sets up on the lower tip of the oil pump body (4) to hydraulic oil in oil pump oil tank (2) passes through oil pump business turn over oil joint (5) and flows or flows in, switching-over valve (6) and rocking arm (7) all set up on the oil pump body (4).

2. The manual pump bypass valve according to claim 1, wherein: the oil filling plug (1) comprises an oil filling plug body (11), a first spring seat (12), a first spring (13) and a first check valve (14), wherein the oil filling plug body (11) is arranged on the oil pump body (4), one end of the oil filling plug body (11) extends out of the oil pump body (4), the first spring seat (12) is arranged in the end portion of the oil pump body (4) located on the oil filling plug body (11), the first check valve (14) is arranged in the end portion of the oil filling plug body (11) far away from the first spring seat (12), and the first spring (13) is arranged between the first spring seat (12) and the first check valve (14).

3. The manual pump bypass valve according to claim 2, wherein: the oil injection plug is characterized in that a first groove (15) is formed in the outer wall of the oil injection plug body (11), the section of the first groove (15) is circular, an O-shaped ring I (16) is arranged in the first groove (15), and the O-shaped ring I (16) is located between the outer wall of the oil injection plug body (11) and the outer wall of the oil pump body (4).

4. The manual pump bypass valve according to claim 2 or 3, wherein: the end part of the oil filling plug body (11) extending out of the oil pump body (4) is provided with a protective cover (17), and the protective cover (17) is covered on the end part of the oil filling plug body (11) far away from the oil pump body (4).

5. The manual pump bypass valve according to claim 1 or 2, wherein: the bypass valve (3) comprises a second one-way valve (31), a second spring (32), a bypass valve joint (33), a clamping sleeve nut (34), a clamping sleeve (35) and an oil guide pipe (36), one end of the bypass valve joint (33) is arranged in the oil pump body (4), the second one-way valve (31) is arranged in the oil pump body (4), the second spring (32) is arranged between the second one-way valve (31) and the end part of the bypass valve joint (33) extending into the oil pump body (4), the clamping sleeve nut (34) is sleeved on the end part of the bypass valve joint (33) extending out of the oil pump body (4), one end of the oil guide pipe (36) is connected with the end part of the bypass valve joint (33) far away from the oil pump body (4) through a clamping sleeve nut (34), the joint of the oil guide pipe (36) and the clamping sleeve nut (34) is sleeved with a clamping sleeve (35).

6. The manual pump bypass valve according to claim 1, wherein: the bypass valve (3) and the reversing valve (6) are respectively arranged on the left side wall and the right side wall of the oil pump body (4) which are opposite.

7. The manual pump bypass valve according to claim 1, wherein: the oil filling plug (1) and the oil pump oil inlet and outlet joint (5) are respectively arranged on two side walls which are opposite to each other from top to bottom of the oil pump body (4).