CN221121364U

CN221121364U - Semi-dry female connector for discharging residual oil

Info

Publication number: CN221121364U
Application number: CN202322855178.1U
Authority: CN
Inventors: 曾庆丰; 刘宣淞; 向帅
Original assignee: Beibei Branch Of Chongqing Chuanqing Technology Development Co ltd
Current assignee: Beibei Branch Of Chongqing Chuanqing Technology Development Co ltd
Priority date: 2023-10-24
Filing date: 2023-10-24
Publication date: 2024-06-11
Anticipated expiration: 2033-10-24

Abstract

The utility model discloses a residual oil discharging semi-dry female joint capable of realizing the functions of valve opening, valve closing and residual oil discharging, which comprises a valve body, a transition joint and a female joint which are arranged on the valve body, and an air suction valve, a pipe cleaner, a gear, a rack shaft, a lock rod and an operating rod which are arranged in the valve body, wherein the plug joint is connected with the transition joint and is axially positioned through the valve body. The operating rod and the gear are driven to rotate through rotating the hand wheel, the gear and the rack shaft are meshed to drive the pipe cleaner, the valve opening and closing functions are realized through the movement of the pipe cleaner inside, and the effect of removing residual oil is achieved. An air suction valve is arranged at one side end of the female end joint and is communicated with the atmosphere outside the female end joint through an air hole in the rack shaft, and the air suction valve is used for balancing the left-right pressure difference of the pipe cleaner when the valve is opened and closed, so that the valve opening and closing and residual oil discharging processes are smooth and fluent.

Description

Semi-dry female connector for discharging residual oil

Technical Field

The utility model belongs to the field of valves, and particularly relates to a connector with functions of opening and closing a valve and discharging residual oil.

Background

The statements in this section merely provide background information related to the present disclosure and may constitute prior art. In carrying out the present utility model, the inventors have found that at least the following problems exist in the prior art.

The semi-dry female connector is mainly used for switching, is installed in switching of various pipelines, switching of other products such as pipelines and valves, and can cut off media when the pipelines are detached and installed, so that the installation is convenient. The method is widely applied to the pipeline systems of light non-corrosive media such as various oils and the like.

The semi-dry female end joint generally comprises a valve body, an adapter, a transition joint, a female end joint, a gear, a rack shaft, a lock rod, an operating rod, a hand wheel, a sealing piece and the like. The hand wheel is rotated to a valve closing state, so that an oil way can be cut off, and the pipeline of the female end connector can be quickly detached, replaced and installed.

The semi-dry female end fitting commonly used in piping systems has the following characteristics: 1. the weight is light: the main body material is formed by turning light aluminum alloy, so that the weight of a pipeline system can be effectively reduced; 2. corrosion resistance: the surface has strong corrosion resistance and wear resistance after being treated by a special process; 3. the CRJ structure is adopted at the female end joint, so that the pipeline can be quickly replaced;

However, the conventional quick connector for CRJ type hose does not have the function of discharging residual oil, for example, in patent application No. 200920113863.4, which is a quick connector for loading hair oil, after the male and female ends are separated, residual oil attached to the pipe wall and remained in the pipe is likely to leak, fire is easily generated, and potential safety hazard is caused. And leakage also presents an environmental pollution risk.

Disclosure of Invention

In view of the above, it is an object of the present utility model to solve some of the problems of the prior art, or at least to alleviate them.

A semi-dry female end fitting for draining residual oil, comprising:

A valve body;

The oil discharging mechanism is positioned in the valve body and comprises a rack shaft with a gas channel, a pipe cleaner and a hose; the first end of the rack shaft is connected with the pipe cleaner, and the end part of the rack shaft is provided with an air suction valve communicated with the air channel; the second end of the rack shaft is communicated with the outside of the valve body through a hose;

The female end connector is in sealing butt joint with the valve body, and the second end is used for sealing butt joint with the male end connector; the pipe cleaner is in clearance fit with the inner cavity of the female end joint and can move inside a pipeline connected with the female end joint; the suction valve is positioned in the female connector and is a one-way valve which is opened only when negative pressure is generated in the inner cavity of the female connector;

And the control mechanism is connected with the second end of the rack shaft and used for controlling the horizontal movement of the rack shaft and controlling the opening and closing of the joint through the horizontal movement of the rack shaft.

The suction valve comprises a suction valve body and a suction valve core positioned in the suction valve body; the first side of the valve core of the suction valve is communicated with the air hole channel, and the second side of the valve core of the suction valve is communicated with the inner cavity of the female end connector; and the second side of the air suction valve core is provided with an air suction valve spring.

Further, the stress area of the first side of the valve core of the suction valve is smaller than that of the second side.

Optionally, the control mechanism comprises a driving device, an operating rod and a gear; one end of the operating rod is connected with the driving device, and the other end of the operating rod penetrates through the valve body to be connected with a center shaft of the gear; the gear is engaged with a rack of the rack shaft.

Optionally, the driving device is a hand wheel.

Further, the control mechanism further comprises a positioning disc; one end of the operating rod is connected with the hand wheel and the positioning disc.

The oil discharging mechanism further comprises a lock rod; the opposite side of the meshing position of the rack shaft and the gear is provided with a sliding groove, and one end of the lock rod penetrates through the valve body to prop against the sliding groove of the rack shaft.

The semi-dry female end connector for discharging residual oil further comprises a transition connector connected with the valve body.

The utility model has the following beneficial effects:

1. according to the utility model, the rack shaft, the pipe cleaner and the suction valve are adopted to cooperate, and the rack shaft drives the pipe cleaner to horizontally move, so that the function of opening and closing the valve of the quick connector is maintained, and the function of discharging residual oil is increased; the rack shaft is provided with a gas channel, the inner cavity of the female end joint is communicated with the outside of the valve body through the hose, the rack shaft and the suction valve, so that the internal and external pressure difference of the female end joint is balanced, and the processes of switching the valve and discharging residual oil are smooth and fluent; in addition, the suction valve is a one-way valve which is only opened when negative pressure is generated in the inner cavity of the female end joint, and when an oil way is opened, the medium in the male end joint can be prevented from flowing out of the joint through the gas pipeline, so that the environmental pollution and potential safety hazard caused by oil leakage are avoided.

2. The lock rod, the rack and the oil discharging mechanism are matched, so that on one hand, the axial rotation of the rack shaft can be limited, and the rack shaft can be well guided to move in the horizontal direction; on the other hand, the deflection of the rack shaft can be limited, the circumferential positioning screwing length of the rack shaft is increased, the torque generated by the rack shaft and the inner hole of the valve body is reduced, and the rack shaft is ensured to maintain a good meshing state; through the two functions, the lock rod can be well matched with the oil discharging mechanism, so that the inner walls of the pipe cleaner at the female end joint and the CRJ male end joint can horizontally and uniformly move, and the effect of discharging residual oil is ensured.

3. The rotary hand wheel makes the pipe cleaner move to different positions axially through internal transmission, so as to realize the actions of opening and closing the valve and discharging residual oil. The hand wheel is provided with a plurality of gears at the positioning disk, so that an operator can conveniently and accurately control the horizontal movement position of the rack shaft, and the effects of switching the valve and discharging residual oil are ensured.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic bottom view of FIG. 1;

FIG. 3 is a left side schematic view of FIG. 1;

fig. 4 is a schematic diagram of the suction valve structure.

Wherein: 1-a valve body; a 2-transition joint; 3-plug-in adapter; a 4-female terminal fitting; 5-gear; 6-a rack shaft; 7-cleaning tube; 8-male end joint; 9-hose; 10-a muffler; 11-an inhalation valve; 12-locking bar; 13-an operating lever; 14-positioning a disc; 15-a hand wheel; 16-a valve core of an air suction valve; 17-suction valve spring.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings, wherein the embodiments of the present utility model are for the purpose of illustrating the utility model only and not for the purpose of limiting the same, and wherein various substitutions and modifications are made by the person of ordinary skill in the art without departing from the technical spirit of the present utility model, and are intended to be included in the scope of the present utility model.

As shown in fig. 1, a semi-dry female end fitting for draining residual oil, comprising:

a valve body 1;

An oil discharging mechanism positioned in the valve body 1 and comprising a rack shaft 6 with a gas channel, a pipe cleaner 7 and a hose 9; the first end of the rack shaft 6 is connected with the pipe cleaner 7, and the end part of the rack shaft is provided with an air suction valve 11 communicated with the air channel; the second end of the rack shaft 6 communicates with the outside of the valve body 1 through a hose 9;

The female end connector 4 is in sealing butt joint with the valve body 1 at a first end and is in sealing butt joint with the male end connector 8 at a second end; the pipe cleaner 7 is in clearance fit with the inner cavity of the female end connector 4 and can move inside a pipeline connected with the female end connector 4; the suction valve 11 is positioned in the female end joint 4 and is a one-way valve which is opened only when negative pressure is generated in the inner cavity of the female end joint 4;

And the control mechanism is connected with the second end of the rack shaft 6 and is used for controlling the horizontal movement of the rack shaft 6 and controlling the opening and closing of the joint through the horizontal movement of the rack shaft 6.

Wherein a in fig. 2 is a gas channel.

The connection of the steering mechanism to the second end of the rack shaft 6 is located in the cavity of the valve body 1 at a distance from the wall of the female end fitting 4, as shown in fig. 1, so as to control the movement of the rack shaft 6 to withdraw the pig 7 from the wall of the female end fitting 4, thereby forming a passageway.

The oil discharging mechanism can realize the function of controlling the valve switch in the conventional CRJ hose quick connector. When the valve is required to be opened, the control mechanism controls the horizontal movement of the rack shaft 6, the pipe cleaner 7 moves leftwards, and a channel is opened between the inner cavity of the female end connector 4 and the pipe cleaner 7, so that the whole quick connector forms a passage; when the valve is to be closed, the rack shaft 6 is moved rightward, and the pipe cleaner 7 and the pipe wall of the female joint 4 are sealed as shown in fig. 1 or 2.

The present utility model increases the length of the rack shaft compared to conventional CRJ-type hose quick connectors. The pipe cleaner 7 is sleeved at the first end of the rack shaft 6 and is in clearance fit with the pipe wall of the female end connector 4, so that the rack shaft 6 moves inside the female end connector 4 and the connected male end connector 8 when moving reversely, so as to clean residual oil on the pipe wall and in the pipeline and achieve the effect of discharging the residual oil. The semi-dry type joint is a type that allows for a small degree of leakage and residual oil residue during closing and draining.

However, when the residual oil is discharged, as the male end joint 8 is closed, the whole inner cavity of the valve body is in a relatively sealed state, and the rack shaft 6 is moved to enable the pipe cleaner 7 to enter the female end joint 4, so that negative pressure can be generated in the inner cavity of the pipe cleaner, and the oil discharging movement of the rack shaft 6 is more difficult. The rack shaft 6 is provided with a gas passage and a suction valve 11 is provided at a first end of the rack shaft 6. The inner cavity of the female end joint 4 is communicated with the gas channel of the rack shaft 6 through the suction valve 11, and is communicated with the atmosphere outside the female end joint 4 through the gas channel and the hose 9. When the pipe cleaner 7 for discharging residual oil returns, the valve at the male end joint 8 is closed, the right side of the pipe cleaner 7, the female end joint 4 and the cavity formed in the male end joint 8 generate negative pressure, and atmospheric gas is sucked into the inner cavity through the suction valve 11 by the hose 9 and the gas channel, so that the balance of the pressure difference between the inside and the outside of the female end joint 4 is realized, and the opening and closing valve and the residual oil discharging process are smooth.

Meanwhile, the air suction valve 11 is a one-way valve which is only opened when negative pressure is generated in the inner cavity of the female end connector 4, only external air is allowed to enter the male end of the user pipe section CRJ from the air vent, and medium in the male end is not allowed to flow out of the air vent, so that the medium in the male end connector 8 can be prevented from flowing out of the valve body 1 through the air suction valve 11 and the air channel during normal oiling, and oil leakage is avoided.

As shown in fig. 1, the semi-dry female end joint for discharging residual oil further comprises a transition joint 2 connected with the valve body 1. And the transition joint 2 is also connected with an adapter 3. The male connector 8 is a CRJ male connector, and the female connector 4, the valve body 1, the transition connector 2 and the plug connector 3 are all in butt joint in sequence, so that the male connector is of a common structure. The plug adapter 3 is connected with the transition joint 2 and is axially positioned through the valve body 1.

The other end of the hose 9 is connected with a muffler 10. The muffler 10 is mounted on the outer wall of the female end fitting 4 as shown in fig. 2.

A hose 9 may be connected to the second end of the rack shaft 6 through the valve body 1. Alternatively, the second end of the rack shaft 6 may pass directly through a valve wall, such as through the valve wall of the plug adapter 3, and the hose 9 may be directly connected to the second end of the rack shaft 6 without passing through the valve wall. The rack shaft 6 is clearance-fitted to the valve wall and horizontally slides in the valve wall.

As shown in fig. 1 or 4, the suction valve 11 includes a suction valve body and a suction valve spool 16 located therein; the first side of the suction valve core 16 is communicated with the air hole channel, and the second side is communicated with the inner cavity of the female end connector 4; the second side of the suction valve core 16 is provided with a suction valve spring 17. The pig 7 is provided at a first end of the rack shaft 6, and a valve body of the suction valve 11 may be fixedly attached to the first end of the pig 7 or the rack shaft 6, as shown in fig. 1 or 2. As shown in fig. 4, the left side of the suction valve core 16 is communicated with the gas channel, and the right side is provided with a suction valve spring 17 which is communicated with the inner cavity of the female end connector 4. The suction valve spring 17 is located between the suction valve spool 16 and the suction valve body. As shown in fig. 4, the first side of the suction valve core 16 has a smaller force receiving area than the second side. Thus, the suction valve 11 constitutes a one-way valve that opens only when a negative pressure is generated in the inner cavity of the female terminal fitting 4.

When the pipe cleaner 7 returns (i.e. when the valve is closed to clean the residual oil), the negative pressure is generated between the right side of the pipe cleaner 7 and the chambers formed in the female joint 4 and the male joint 8, the left side of the valve core 16 of the suction valve is subjected to the atmospheric pressure, and the right side is subjected to the elastic force of the spring 17 and the acting force of the negative pressure of the chamber on the right side of the pipe cleaner 7. At this time, the atmosphere pressure and the vacuum of the right chamber act together, the elasticity of the suction valve spring 17 is overcome, the suction valve 11 is opened, and the gas in the gas hole channel (A) is sucked into the right chamber of the pipe cleaner 7 to balance the air pressure;

During normal refueling (i.e., valve opening), the suction valve core 16 is subjected to the elastic force of the suction valve spring 17 and the medium pressure, and the other side is subjected to only atmospheric pressure. Meanwhile, when the suction valve 11 is not opened, the stress area of the left side of the valve core 16 of the suction valve is smaller than the stress area of the right side of the valve core 16 with a medium, and at the moment, the stress of the right side of the valve core 16 is far larger than that of the left side. So that during normal filling the suction valve 11 will not open and medium will not enter the gas channel from the suction valve 11 to avoid leakage of medium out of the joint.

As shown in fig. 1 or 3, the steering mechanism includes a driving device, a lever 13, and a gear 5; one end of the operating rod 13 is connected with a driving device, and the other end of the operating rod passes through the valve body 1 and is connected with a center shaft of the gear 5; the gear 5 is engaged with a rack of the rack shaft 6. The gear 5 is sleeved at the other end of the operating rod 13 and meshed with the rack shaft 6, so that the driving device can control the horizontal movement of the rack shaft 6 by rotating the operating rod 13, and the gear 5, the rack shaft 6 and the pipe cleaner 7 can be matched for use so as to realize the functions of opening and closing an oil path and discharging residual oil in a pipeline.

Of course, the control mechanism may also adopt other existing manners, for example, in the embodiment that the second end of the rack shaft 6 passes through the valve wall, the control system may be similar to a telescopic rod, and one end of the control system is connected to the second end of the rack shaft 6 to control the rack shaft 6 to move horizontally.

The control system or the drive device can be automatic or manual. As shown in fig. 3, the driving device is a hand wheel 15, and the operating rod 13 is driven to rotate by rotating the hand wheel 15. The steering mechanism further comprises a positioning disk 14; one end of the operating rod 13 is connected with the hand wheel 15 and the positioning disk 14. The hand wheel 15 sets a positioning point position 'off' on the positioning disk 14 to be in a valve closing state; the hand wheel 15 is opened from the setting of the locating point position 'off' to the setting of the locating point position 'on' by 90 degrees anticlockwise; the process of 360 degrees clockwise from the locating point position of the hand wheel 15 is in a residual oil discharging state. Therefore, the pipe cleaner 7 can be axially and accurately moved to different positions through internal transmission by rotating the hand wheel 15, and the actions of opening and closing the valve and discharging residual oil are realized.

Since the utility model drives the horizontal movement of the gear 5 by meshing with the rack shaft 6, the movement direction is easy to deviate. The rack shaft 6 is also easily deflected during movement, and cannot maintain a good engagement with the gear 5. The above problems result in the pig 7 not being able to remain evenly moved during the return stroke (i.e. the removal of the residual oil), reducing the oil removal effect.

In view of this, as shown in fig. 1 or 3, the oil drain mechanism further includes a lock lever 12; a sliding groove is arranged on the opposite side of the meshing position of the rack shaft 6 and the gear 5, and one end of the lock rod 12 penetrates through the valve body 1 to prop against the sliding groove of the rack shaft 6. The lock lever 12 is mainly used for limiting internal transmission components, and penetrates through one end of the valve body 1 to be matched with a sliding groove of the rack shaft 6 and is positioned at the opposite side of the meshing side of the gear 5 and the rack shaft 6. When the lock rod 12 is tightly propped against the rack shaft 6, on one hand, the circumferential rotation of the rack shaft 6 can be limited, and the horizontal movement of the rack shaft 6 can be well guided. On the other hand, the deflection of the rack shaft 6 is limited, the circumferential positioning screwing length of the rack shaft 6 is increased, the torque generated by the rack shaft 6 and the inner hole of the valve body 1 is reduced, and the rack shaft 6 is ensured to maintain a good meshing state. The lock rod 12 can ensure that the pipe cleaner 7 can horizontally and uniformly move on the inner walls of the female end connector 4 and the CRJ male end connector so as to improve the effect of discharging residual oil.

According to the utility model, the operating rod 13 and the gear 5 are driven to rotate by rotating the hand wheel 15, the gear 5 is meshed with the rack shaft 6 to drive the pipe cleaner 7, and the valve opening and closing functions are realized by the movement of the pipe cleaner 7 inside, so that the effect of uniformly removing residual oil is achieved. The utility model makes the opening and closing valve and the residual oil discharging process smooth and fluent, reduces the pipeline opening Yu Youliang, greatly reduces the leakage quantity of the residual oil during disassembly, even does not leak the residual oil, and reduces the potential safety hazard and the environmental pollution.

The fixed connection which is not particularly specified can be a connection mode such as riveting, welding, bolt connection and the like, and the movable connection can be a connection mode such as hinging and the like.

Claims

1. A semi-dry female end fitting for draining residual oil, comprising:

A valve body (1);

The oil discharging mechanism is positioned in the valve body (1) and comprises a rack shaft (6) with a gas channel, a pipe cleaner (7) and a hose (9); the first end of the rack shaft (6) is connected with the pipe cleaner (7), and the end part of the rack shaft is provided with an air suction valve (11) communicated with the air channel; the second end of the rack shaft (6) is communicated with the outside of the valve body (1) through a hose (9);

The female end connector (4) is in sealing butt joint with the valve body (1) at the first end and is in sealing butt joint with the male end connector (8) at the second end; the pipe cleaner (7) is in clearance fit with the inner cavity of the female end joint (4) and can move in a pipeline connected with the female end joint (4); the suction valve (11) is positioned in the female end connector (4) and is a one-way valve which is opened only when negative pressure is generated in the inner cavity of the female end connector (4);

And the control mechanism is connected with the second end of the rack shaft (6) and is used for controlling the horizontal movement of the rack shaft (6) and controlling the opening and closing of the joint through the horizontal movement of the rack shaft.

2. The residual oil drain semi-dry female end joint according to claim 1, wherein the suction valve (11) comprises a suction valve body and a suction valve spool (16) located therein; the first side of the valve core (16) of the suction valve is communicated with the gas channel, and the second side of the valve core is communicated with the inner cavity of the female end connector (4); the second side of the air suction valve core (16) is provided with an air suction valve spring (17).

3. The residual oil drain semi-dry female end joint according to claim 2, wherein the suction valve spool (16) has a smaller bearing area on a first side than on a second side.

4. The residual oil draining semi-dry female end joint according to claim 1, characterized in that the handling mechanism comprises a driving device, a lever (13) and a gear (5); one end of the operating rod (13) is connected with the driving device, and the other end of the operating rod penetrates through the valve body (1) to be connected with a center shaft of the gear (5); the gear (5) is meshed with a rack of the rack shaft (6).

5. The residual oil drain semi-dry female end joint according to claim 4, wherein the driving means is a hand wheel (15).

6. The residual oil drain semi-dry female end joint according to claim 5, wherein the handling mechanism further comprises a positioning disc (14); one end of the operating rod (13) is connected with the hand wheel (15) and the positioning disc (14).

7. The residual oil drain semi-dry female end fitting according to claim 4, wherein the oil drain mechanism further comprises a lock lever (12); the opposite side of the meshing position of the rack shaft (6) and the gear (5) is provided with a sliding groove, and one end of the lock rod (12) penetrates through the valve body (1) to prop against the sliding groove of the rack shaft (6).

8. The residual oil draining semi-dry female end joint according to claim 1, further comprising a transition joint (2) connected to the valve body (1).