A double-closed gas return joint

Abstract

The present invention discloses a double-sealed return air joint, the technical solution of which includes a one-way control component and a ball valve control component. The one-way control component includes a shell, a support frame fixed inside the shell, a guide column provided in the middle of the support frame, a telescopic column inserted into the guide column, a sealing plate connected to the upper side of the telescopic column, a return spring provided between the sealing plate and the guide column, and a ball valve control component including a valve body threadedly connected to the lower side of the shell, a ball rotatably connected inside the valve body, a rotating seat provided at the right end of the valve body, a valve stem inserted into the rotating seat, one end of the valve stem connected to the ball and the other end connected to a handle, a square positioning frame slidingly provided on the outer side of the valve body, a positioning groove matched with the positioning frame provided on the rotating seat, a moving component for driving the positioning frame to slide provided on the handle, and a first baffle and a second baffle fixed to the side of the rotating seat away from the valve body. The present invention has the function of easily fixing the state of the ball valve and improving the safety of the return air joint.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas recovery equipment, and in particular to a double-enclosed gas return joint. Background Art

[0002] The oil and gas recovery joint is a device commonly used in tank trucks. It is usually connected to the docking device in the oil and gas return pipeline. When transporting oil to the tank truck, a large amount of oil and gas needs to be discharged through the return gas joint for recovery so that the air pressure in the tank truck can be balanced.

[0003] At present, a Chinese patent with announcement number CN216344543U discloses a dust-proof oil and gas recovery joint, which includes a main body with an air outlet at one end and an air inlet at the other end, a bracket provided in the main body, a valve stem slidably provided on the bracket, a valve head provided on the valve stem, and the valve head is used to seal the air outlet. A spring is also sleeved on the valve stem, one end of the spring is against the bracket, and the other end is against the valve head; a dust-proof component is provided on the outside of one end of the main body located at the air outlet, and a ball valve is provided on one end of the main body located at the air inlet, one end of the ball valve is connected to the main body by a thread, and the other end is provided with a flange connected to the oil tank.

[0004] The above-mentioned oil and gas recovery joint can operate the ball valve through the handle on the ball valve to achieve active control of the return air joint switch. However, when the oil and gas recovery joint needs to be opened for a long time, the handle of the ball valve needs to be kept in one position for a long time. However, the handle exposed at the outer end of the ball valve body lacks a positioning device, which can easily cause the state of the ball valve to change after accidental touch. If the ball valve is not discovered to be closed in time during refueling, it may easily cause a safety hazard. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides a double-sealed air return joint, which has the function of easily fixing the state of the ball valve and improving the safety of the air return joint.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a double-sealed return air joint, comprising a one-way control component and a ball valve control component, the one-way control component comprising an outer shell, a support frame fixed in the outer shell, a guide column provided in the middle of the support frame, a telescopic column passed through the guide column, a sealing plate connected to the upper side of the telescopic column, a return spring provided between the sealing plate and the guide column, the ball valve control component comprising a valve body threadedly connected to the lower side of the outer shell, a ball rotatably connected to the valve body, a rotating seat provided at the right end of the valve body, a valve stem passed through the rotating seat, one end of the valve stem is connected to the ball and the other end is connected to a handle, a square positioning frame is slidingly provided on the outer side of the valve body, a positioning groove cooperating with the positioning frame is provided on the rotating seat, a moving component for driving the positioning frame to slide is provided on the handle, and a first baffle and a second baffle are fixed to the side of the rotating seat away from the valve body.

[0007] By adopting the above technical solution, when the handle abuts against the first baffle, the ball valve control assembly is in a closed state; when the handle abuts against the second baffle, the handle needs to be rotated 90 degrees from abutting against the first baffle to abutting against the second baffle, and the positioning frame is square, so that the positioning frame can be slid to cooperate with the positioning groove when the ball valve control assembly is in the open and closed states. When it is necessary to rotate the ball to control the opening and closing state of the ball valve control assembly, it is necessary to first move the positioning frame away from the rotating seat through the moving assembly to separate the positioning frame from the positioning groove, and then the valve stem can be driven to rotate by rotating the handle to achieve control of the ball position. When the ball valve is in the open or closed state, the valve stem can be positioned by matching the positioning frame with the positioning groove through the moving assembly, so that the position of the ball is not easily changed by accidentally touching the handle, thereby improving safety.

[0008] The present invention is further configured as follows: a T-shaped adjustment groove is provided on the handle, a slider is provided on the side of the valve stem away from the sphere, the slider is slid in the adjustment groove, a shielding cover is threadedly connected to the end of the handle close to the valve stem, a shielding rod is fixed on the inside of the shielding cover, an adjustment spring is provided between the shielding cover and the valve stem, the moving assembly includes an L-shaped extrusion rod, two sliding grooves are evenly distributed on the outside of the valve stem, a transmission ring is slidably provided on the sliding groove, a shielding ring fixed to the valve stem is provided on the side of the transmission ring away from the rotating seat, a positioning spring is provided between the transmission ring and the shielding ring, the positioning frame is fixed on the side of the transmission ring facing the rotating seat, and a guide slope is provided on the side of the extrusion rod close to the transmission ring.

[0009] By adopting the above technical solution, when it is necessary to rotate the ball by the handle, the handle is first slid toward the valve stem, so that the extrusion rod squeezes the transmission ring, and under the action of the guide inclined surface, the transmission ring moves away from the rotating seat, thereby separating the positioning frame from the positioning groove, and then the handle is turned to drive the valve stem to rotate, thereby driving the ball to rotate, thereby realizing the control of the opening and closing of the ball valve control assembly, and when the handle is rotated to abut against the first baffle or the second baffle, the handle is released to reset it under the adjustment spring, thereby separating the extrusion rod from the transmission ring, and the positioning frame can cooperate with the positioning groove under the action of the positioning spring, making the valve stem not easy to rotate, and even if the handle is turned by mistake, the position of the ball will not change, so that accidentally touching the handle will not easily cause the opening and closing state of the ball valve control assembly to change, thereby improving safety.

[0010] The present invention is further configured as follows: a placement groove is provided on the side of the handle away from the valve stem, an extension component is provided in the placement groove, and an extension rod is included along the component and is rotatably positioned and connected to the inner wall of the placement groove.

[0011] By adopting the above technical solution, when the extension rod is not needed, the extension rod is located in the placement slot, which will not increase the overall handle length, reduce the probability of the handle being accidentally touched, and facilitate the storage of the double-sealed return air joint. When it is necessary to rotate the valve stem through the handle, the extension rod can be rotated 180 degrees and positioned so that the handle can be slid and rotated by the extension rod, thereby unlocking and rotating the valve stem through the extension rod. The extension rod and the lengthened handle make it more labor-saving and convenient for people to control the opening and closing of the ball valve control assembly.

[0012] The present invention is further configured as follows: a rotating column is rotatably connected in the placement slot, the extension rod is fixedly connected to the rotating column, a switching rod is passed through the rotating column, a switching plate is fixed to the end of the switching rod away from the valve body, a limit plate is fixed to the end of the switching rod close to the valve body, a limit spring is provided between the switching plate and the handle, a square limit frame is provided at the end of the limit plate close to the handle, and a limit groove for the limit frame to be embedded is provided on the handle.

[0013] By adopting the above technical solution, when the extension rod is located in the placement slot, when the extension rod needs to be rotated, the switch plate can be pressed to separate the limit frame from the limit slot and then the extension rod can be rotated. Since the limit frame is square, when the extension rod is rotated 180 degrees, releasing the switch plate allows the limit frame and the limit slot to cooperate to fix the position of the extension rod.

[0014] The present invention is further configured such that: the switching rod is square.

[0015] By adopting the above technical solution, the switching rod is square, so that people can drive the extension rod to rotate through the switching rod when rotating the switching plate. Therefore, when adjusting the position of the extension rod, the position of the extension rod can be unlocked and adjusted by pressing and rotating the switching plate, making the extension rod adjustment more convenient.

[0016] The present invention is further configured as follows: a plurality of auxiliary blocks are fixed on a side of the switching plate away from the handle.

[0017] By adopting the above technical solution, the auxiliary block increases the surface roughness of the switching plate, thereby facilitating the rotation of the extension rod by rotating the switching plate, making the rotation of the extension rod easier.

[0018] The present invention is further configured as follows: a guide rod is fixed to the side of the adjustment slot away from the shielding cover, and the guide rod is inserted into the adjustment spring.

[0019] By adopting the above technical solution, the adjusting spring can be limited by the guide rod, so that the adjusting spring is not easy to twist when it is stretched and deformed, and at the same time, the adjusting spring is not easy to slip out of the adjusting groove, so that the handle can slide easily relative to the valve stem and is not easy to get stuck.

[0020] The present invention is further configured such that: a plurality of rotation slots are evenly distributed on the outer side of the shielding cover.

[0021] By adopting the above technical solution, the shielding cover can be easily rotated through the rotating groove, which makes it easy to remove the shielding cover, making it easy to replace the adjusting spring, and the valve stem and handle are easy to remove and easy to replace and maintain.

[0022] In summary, the present invention has the following beneficial effects:

[0023] When using the return air joint, the positioning frame cooperates with the positioning groove under the action of the positioning spring to fix the position of the valve stem, so that people will not cause the valve stem to rotate if they accidentally touch the handle, making it difficult to change the opening and closing state of the ball valve control assembly, thereby improving safety. When it is necessary to change the opening and closing state of the ball valve control assembly, first slide the handle to make the extrusion rod squeeze the transmission ring, and the transmission ring can drive the positioning frame to move and separate from the positioning groove, and then turn the handle to drive the valve stem to rotate. In this way, the valve stem can be unlocked and rotated by sliding and turning the operating handle. The operation is convenient, fast and easy for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of this embodiment;

[0025] Figure 2 This is an exploded schematic diagram of this embodiment;

[0026] Figure 3 is a schematic cross-sectional view of this embodiment;

[0027] Figure 4 The diagram is a partial cross-sectional view to highlight the extension component in this embodiment.

[0028] Figure numerals: 1, one-way control assembly; 2, ball valve control assembly; 11, housing; 12, support frame; 13, guide column; 14, telescopic column; 15, sealing plate; 16, return spring; 21, valve body; 22, ball; 23, valve seat; 24, rotating seat; 25, valve stem; 26, handle; 27, shielding cover; 28, extrusion rod; 29, extension assembly; 241, first baffle; 242, second baffle; 243, positioning groove; 251, slider; 252, slide groove ; 253, transmission ring; 254, positioning frame; 255, retaining ring; 256, positioning spring; 261, adjusting slot; 262, adjusting spring; 263, guide rod; 264, placement slot; 265, limit slot; 271, retaining rod; 272, rotation slot; 281, guide slope; 291, rotating column; 292, extension rod; 293, switching rod; 294, switching plate; 295, limit plate; 296, limit spring; 297, limit frame; 298, auxiliary block. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] This embodiment discloses a double-sealed return air joint, such as Figures 1 to 4 As shown, it includes a one-way control component and a ball valve control component.

[0031] The one-way control component includes a shell, a support frame is fixed in the shell, a guide column is provided in the middle of the support frame, a telescopic column is passed through the guide column, a sealing plate is connected to the upper side of the telescopic column, and a reset spring is provided between the sealing plate and the guide column.

[0032] The ball valve control assembly includes a valve body threadedly connected to the lower side of the housing. A ball is rotatably connected to the valve body. The ball has valve seats at the upper and lower ends. A rotating seat is provided at the right end of the valve body. A valve stem is inserted into the rotating seat. One end of the valve stem is connected to the ball, and the other end is connected to a handle. The handle has a T-shaped adjustment slot. A slider is provided on the side of the valve stem away from the ball. The slider slides in the adjustment slot. A shielding cover is threadedly connected to the end of the handle near the valve stem. A blocking rod is fixed in the shielding cover. An adjustment spring is provided between the shielding cover and the valve stem. A guide rod is fixed to the side wall of the adjustment slot away from the shielding cover. The guide rod is inserted into the adjustment spring. Rotating slots are evenly distributed around the shielding cover. A first baffle and a second baffle are fixed to the rotating seat. The handle must rotate 90 degrees from abutting the first baffle to abutting the second baffle. When the handle abuts the first baffle, the ball valve control assembly is in a closed state. When the handle abuts the second baffle, the ball valve control assembly is in an open state.

[0033] Two sliding grooves are evenly distributed on the outer side of the valve stem, and a transmission ring is slidably mounted on the sliding grooves. A square positioning frame is installed on the side of the transmission ring close to the rotating column. A positioning groove that can be clearance-matched with the positioning frame is installed on the rotating seat. A retaining ring fixed to the valve stem is installed on the side of the transmission ring away from the rotating seat. A positioning spring is installed between the transmission ring and the retaining ring. When the positioning spring is in the normal state, the positioning frame can be squeezed into the positioning groove. An L-shaped extrusion rod is fixed to the side of the valve stem close to the rotating seat, and a guiding slope is installed on the side of the extrusion rod close to the transmission ring.

[0034] When it is necessary to rotate the valve stem, first push the handle to slide so that the extrusion rod moves toward the transmission ring and squeezes the transmission ring, thereby causing the transmission ring to move away from the rotating seat, so that the positioning frame is separated from the positioning groove. At this time, turning the handle can drive the valve stem to rotate. When there is no need to rotate the valve stem, loosen the handle, and the handle can be reset under the action of the adjusting spring, so that the extrusion rod is separated from the transmission ring, and the positioning frame can cooperate with the positioning groove under the action of the positioning spring, so that the valve stem is fixed and cannot be rotated. Even if the handle is touched by mistake, the valve stem will not be rotated to change the opening and closing state of the ball valve control assembly, making it safer for people to use.

[0035] A placement slot is provided on the inner side of the handle, and an extension component is provided in the placement slot. The component includes a rotating column that is rotatably connected to the inner wall of the placement slot, an extension rod is fixed on the rotating column, and a switching rod is passed through the rotating column. The switching rod is square, and a switching plate is fixed to the end of the switching rod away from the valve body. A limit spring is provided between the switching plate and the handle. A limit plate is fixed to the end of the switching rod close to the valve body, and a square limit frame is provided on the end of the limit plate close to the handle. A limit slot for the limit frame to be embedded in the handle is provided. When it is necessary to rotate the handle, the switch plate can be pressed to separate the limit frame from the limit slot, and then the switch plate is rotated to drive the extension rod to rotate 180 degrees, so that the extension rod extends the handle, so that the handle can be pushed to slide or rotate by the extension rod to achieve control of the position of the ball. The extension rod lengthens the handle, making it easier and more convenient for people to control the position of the ball, and the unlocking and adjustment of the extension rod position can be achieved by operating the switch plate, making the extension rod position adjustment easy and convenient for people to use.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention should be included in the scope of protection of the present invention.

Claims

1. A double-enclosed return air joint, comprising a one-way control assembly and a ball valve control assembly, characterized in that: The one-way control assembly includes a shell, a support frame is fixed in the shell, a guide column is provided in the middle of the support frame, a telescopic column is passed through the guide column, a sealing plate is connected to the upper side of the telescopic column, a return spring is provided between the sealing plate and the guide column, the ball valve control assembly includes a valve body threadedly connected to the lower side of the shell, a ball is rotatably connected to the valve body, a rotating seat is provided at the right end of the valve body, a valve stem is passed through the rotating seat, one end of the valve stem is connected to the ball and the other end is connected to a handle, a square positioning frame is slidably provided on the outer side of the valve body, a positioning groove that cooperates with the positioning frame is provided on the rotating seat, and a moving component for driving the positioning frame to slide is provided on the handle, and a first baffle and a second baffle are fixed to the side of the rotating seat away from the valve body; The handle is provided with a T-shaped adjustment groove, and a slider is provided on the side of the valve stem away from the ball. The slider is slid into the adjustment groove. A shielding cover is threadedly connected to the end of the handle close to the valve stem, and a shielding rod is fixed on the inside of the shielding cover. An adjustment spring is provided between the shielding cover and the valve stem. The moving assembly includes an L-shaped extrusion rod, and two sliding grooves are evenly distributed on the outside of the valve stem. A transmission ring is slidably provided on the sliding groove. A shielding ring fixed to the valve stem is provided on the side of the transmission ring away from the rotating seat. A positioning spring is provided between the transmission ring and the shielding ring. The positioning frame is fixed on the side of the transmission ring facing the rotating seat, and a guide slope is provided on the side of the extrusion rod close to the transmission ring.

2. A double-sealed return air joint according to claim 1, characterized in that: A placement groove is provided on one side of the handle away from the valve stem, and an extension component is provided in the placement groove. The extension rod is rotatably positioned and connected to the inner wall of the placement groove along the component.

3. The double-sealed return air joint according to claim 2, characterized in that: A rotating column is rotatably connected in the placement slot, the extension rod is fixedly connected to the rotating column, a switching rod is passed through the rotating column, a switching plate is fixed to the end of the switching rod away from the valve body, a limit plate is fixed to the end of the switching rod close to the valve body, a limit spring is provided between the switching plate and the handle, a square limit frame is provided at the end of the limit plate close to the handle, and a limit groove for the limit frame to be embedded is provided on the handle.

4. The double-sealed air return joint according to claim 3, characterized in that: The switching rod is square.

5. The double-sealed return air joint according to claim 4, characterized in that: A plurality of auxiliary blocks are fixed on a side of the switching plate away from the handle.

6. The double-sealed return air joint according to claim 1, characterized in that: A guide rod is fixed on the side of the adjustment slot away from the shielding cover, and the guide rod is inserted into the adjustment spring.

7. The double-sealed return air joint according to claim 1, characterized in that: A plurality of rotation slots are evenly distributed on the outer side of the shielding cover.

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