Bidirectional pressing and rotating ball valve structure

Abstract

According to the bidirectional pressing and rotating ball valve structure, a connecting pipe is arranged on the side portion of a valve body, an auxiliary adjusting mechanism is arranged on the connecting pipe and comprises a connecting pipe and an external pipe, external threads are arranged on the surface of the connecting pipe, one end of the connecting pipe is in threaded connection with the connecting pipe, and the other end of the connecting pipe is in threaded connection with the external pipe. The invention belongs to the technical field of valve equipment, a sealing valve seat tightly abuts against a valve body through a connecting pipe, when the sealing valve seat is scoured, corroded or abraded to cause sealing failure, a tool is used for screwing out the connecting pipe, so that the connecting pipe is separated from a connecting pipe on the valve body, and a worker can quickly and conveniently take out the damaged sealing valve seat; after a new sealing valve seat is placed, the connecting pipe is rotated back, the sealing valve seat is tightly jacked by the connecting pipe, and then the two-way pressing and rotating ball valve can work normally, and compared with an existing two-way pressing and rotating ball valve, the two-way pressing and rotating ball valve has the advantages that rapid online replacement is achieved, shutdown maintenance is not needed, and production interruption and cost increase cannot be caused.

Description

Technical Field

[0001] The invention belongs to the technical field of valve equipment, and particularly relates to a bidirectional pressure rotary ball valve structure. Background Art

[0002] In an industrial pipeline system, as a core component for fluid control, the sealing performance of a valve directly affects the reliability and safety of system operation. The sealing valve seats of traditional valves (such as butterfly valves, semi-spherical valves, etc.) usually adopt a fixed structure. When replacing, it is necessary to disassemble core components such as the valve body and valve stem, and the operation is complex and time-consuming. For example, when replacing the seat sealing ring of a large-diameter butterfly valve, it needs to be fixed through a glue injection process, and it is necessary to drill holes symmetrically, inject glue and wait for curing. The whole process may last for more than 24 hours, and professional tools and technical support are required. In addition, under working conditions of high temperature, high pressure or media containing particles, the valve seat is easily eroded, corroded or worn, resulting in sealing failure.

[0003] The patent with the patent publication number CN216519658 U discloses a sealing structure of a new type of bidirectional pressure rotary ball valve, including a triangular sealing ring and a valve seat assembly. The triangular sealing ring is a soft sealing ring. The axial cross-section of the triangular sealing ring is triangular and one vertex of the triangle is located inside. The valve seat assembly is fixed inside the valve body of the rotary ball valve. A groove is provided on the valve seat assembly corresponding to the sealing surface of the valve plate of the rotary ball valve. The triangular sealing ring is snapped into the groove and the inner edge protrudes from the groove. The soft triangular sealing ring cooperates with the valve plate of the valve to seal, changing the sealing structure of the bidirectional pressure rotary ball valve to bidirectional pressure soft sealing, and the sealing pair forms a linear seal, solving the problem of wear of the surfacing layer on the valve seat surface of the hard-to-hard sealing of the bidirectional pressure rotary ball valve. Moreover, the triangular rubber ring is stuck in the groove and is not easy to fall off and is easy to replace, facilitating quick repair. The bidirectional pressure rotary ball valve using this sealing structure can have good sealing performance.

[0004] Although the above technical solution solves the problem of wear of the surfacing layer on the valve seat surface of the hard-to-hard sealing of the bidirectional pressure rotary ball valve, and the triangular rubber ring is stuck in the groove and is not easy to fall off, there are still the following problems: The sealing valve seat of the existing bidirectional pressure rotary ball valve cannot be quickly replaced online, and it is necessary to stop the machine for maintenance, resulting in production interruption and cost increase. Summary of the Invention

[0005] A bidirectional pressure rotary ball valve structure provided by the invention has a sealing valve seat tightly pressed against the valve body through an adapter pipe. When the sealing valve seat is eroded, corroded or worn, resulting in sealing failure, use a tool to screw out the adapter pipe to separate the connecting pipe on the adapter pipe and the valve body. Then the staff can quickly and conveniently take out the damaged sealing valve seat. After placing the new sealing valve seat, screw the adapter pipe back. After the adapter pipe tightly presses the sealing valve seat, the bidirectional pressure rotary ball valve can work normally. Compared with the existing bidirectional pressure rotary ball valve, it realizes quick online replacement, does not require shutdown for maintenance, and will not cause production interruption and cost increase.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is as follows: A two-way pressure-swing ball valve structure, a connecting pipe is provided on the side of the valve body, and an auxiliary adjustment mechanism is provided on the connecting pipe. The auxiliary adjustment mechanism includes an adapter pipe and an outer connecting pipe. The outer surface of the adapter pipe is provided with an external thread. One end of the adapter pipe is threadedly connected to the connecting pipe, and the other end of the adapter pipe is threadedly connected to the outer connecting pipe. A connecting flange is provided on the outer connecting pipe. After the adapter pipe and the connecting pipe are tightened, the sealing valve seat is pressed tightly against the valve body.

[0007] A plug rod is provided inside the adapter pipe. The front end of the plug rod is a conical structure. A baffle is provided inside the outer connecting pipe. A flow channel hole is provided on the baffle. The plug rod is in a tight fit with the flow channel hole. When the adapter pipe and the connecting pipe are tightened, the plug rod and the flow channel hole are in a separated state. When the adapter pipe and the outer connecting pipe are tightened, the plug rod and the flow channel hole are in an inserted and closed state.

[0008] A circle of auxiliary rotation sockets is provided on the outer circumferential surface of the adapter pipe. The auxiliary rotation sockets include fixing blocks and plugging blocks. The plugging blocks are arranged on the sides of the fixing blocks, and plugging holes are provided on the plugging blocks.

[0009] A circle of installation grooves is provided on the end face of the adapter pipe connected to the connecting pipe, and the sealing valve seat is installed on the installation grooves.

[0010] The sealing valve seat is installed on the installation grooves of the adapter pipe through bolts.

[0011] Indicator markings are respectively provided at both ends of the adapter pipe, and the indicator markings are used to indicate whether the adapter pipe rotates to the set working position.

[0012] A sealing protective layer is provided on the outer surface of the plug rod.

[0013] A plurality of sensor installation cavities are provided at the rear side of the plug rod.

[0014] A liquid sealing gasket is provided on the external thread of the adapter pipe.

[0015] The plugging holes on the plugging blocks have three calibers, namely small holes, medium holes and large holes.

[0016] Beneficial effects Adopting the above technical solution, the beneficial effects of the present invention are as follows: A two-way pressure-rotating ball valve structure provided by the present invention, the sealing valve seat is tightly pressed on the valve body through the connecting pipe. When the sealing valve seat is eroded, corroded or worn, resulting in sealing failure, a tool is used to screw out the connecting pipe, so that the connecting pipe and the connecting pipe on the valve body are separated. The staff can quickly and conveniently take out the damaged sealing valve seat. After placing the new sealing valve seat, screw the connecting pipe back. After the connecting pipe presses the sealing valve seat tightly, the two-way pressure-rotating ball valve can work normally. Compared with the existing two-way pressure-rotating ball valve, it can realize rapid on-line replacement without shutdown for maintenance, and will not cause production interruption and cost increase; An auxiliary adjustment mechanism is adopted on the valve body. When the medium flow direction in the pipeline comes from the direction of the external connecting pipe, without closing any switch, when the connecting pipe is screwed out from the connecting pipe on the side of the valve body, the blocking rod inside the connecting pipe blocks the flow passage hole on the baffle inside the external connecting pipe, blocking the medium from the direction of the external connecting pipe. The staff can quickly and conveniently replace the sealing valve seat. After the replacement is completed, screw the connecting pipe back into the connecting pipe and tighten it. At this time, the blocking rod is separated from the flow passage hole on the baffle, and the pipeline resumes the medium flow. Brief Description of the Drawings

[0017] Figure 1 Structural schematic of the present invention Figure 1 ; Figure 2 is Figure 1 the sectional structural schematic diagram of; Figure 3 Structural schematic of the present invention Figure 2 ; Figure 4 is Figure 3 the sectional structural schematic diagram of; Figure 5 Structural schematic diagram of the valve body in the present invention; Figure 6 is Figure 5 the sectional structural schematic diagram of; Figure 7 Structural schematic diagram of the connecting pipe in the present invention; Figure 8 is Figure 7 the sectional structural schematic diagram of; Figure 9 Structural schematic diagram of the external connecting pipe in the present invention; Figure 10 is Figure 9 the sectional structural schematic diagram of; Figure 11 Structural schematic of the present invention Figure 3 .

[0018] Valve body 1, connecting pipe 2, connecting pipe 3, external connecting pipe 4, connecting flange 5, sealing valve seat 6, blocking rod 7, baffle 8, flow passage hole 9, fixed block 10, plug-in block 11, plug-in hole 12, installation groove 13. Detailed implementation manners

[0019] In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "arrangement", "installation", "connection" and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] As Figures 1 - 11 shown, a bidirectional pressure-rotary ball valve structure, a connecting pipe 2 is arranged on the side of a valve body 1, and an auxiliary adjusting mechanism is arranged on the connecting pipe 2. The auxiliary adjusting mechanism includes a connecting pipe 3 and an outer connecting pipe 4. An external thread is arranged on the surface of the connecting pipe 3. One end of the connecting pipe 3 is threadedly connected to the connecting pipe 2, and the other end of the connecting pipe 3 is threadedly connected to the outer connecting pipe 4. A connecting flange 5 is arranged on the outer connecting pipe 4. After the connecting pipe 3 and the connecting pipe 2 are screwed tightly, a sealing valve seat 6 is pressed tightly on the valve body 1.

[0022] A blocking rod 7 is arranged inside the connecting pipe 3. The front end of the blocking rod 7 is a conical structure. A baffle 8 is arranged inside the outer connecting pipe 4. A flow passage hole 9 is arranged on the baffle 8. The blocking rod 7 and the flow passage hole 9 are in a tight fit. When the connecting pipe 3 and the connecting pipe 2 are screwed tightly, the blocking rod 7 and the flow passage hole 9 are in a separated state. When the connecting pipe 3 and the outer connecting pipe 4 are screwed tightly, the blocking rod 7 and the flow passage hole 9 are in a plugged and closed state.

[0023] A circle of auxiliary rotation sockets is arranged on the outer circumferential surface of the connecting pipe 3. The auxiliary rotation sockets include a fixed block 10 and a plug-in block 11. The plug-in block 11 is arranged on the side of the fixed block 10, and a plug-in hole 12 is arranged on the plug-in block 11. It is convenient for the staff to insert a connecting rod into the auxiliary rotation socket to rotate the connecting pipe 3.

[0024] As Figure 8As shown, a mounting groove 13 is provided on the end face where the connecting pipe 3 is connected to the connecting pipe 2. The sealing valve seat 6 is installed on the mounting groove 13. The sealing valve seat 6 can be fixed to the end face of the connecting pipe 3 according to the operation requirements. After the connecting pipe 3 is tightened on the valve body 1, the sealing valve seat 6 is clamped to the designated position. When the sealing valve seat 6 needs to be replaced, as long as the connecting pipe 3 is unscrewed, the sealing valve seat 6 can be taken out of the valve body 1, which is convenient for the staff to quickly replace the sealing valve seat 6.

[0025] The sealing valve seat 6 is installed on the mounting groove 13 of the connecting pipe 3 through bolts. Using bolts to fix the sealing valve seat 6 can prevent the sealing valve seat 6 from falling off the connecting pipe 3.

[0026] Indicator markings are provided at both ends of the connecting pipe 3. The indicator markings are used to show whether the connecting pipe 3 is rotated to the set working position. The indicator markings are used to show whether the connecting pipe 3 is in the designated working position, which is convenient for the staff to quickly identify the installation state of the connecting pipe 3.

[0027] A sealing protective layer is provided on the outer surface of the plug rod 7, so that the plug rod 7 and the flow channel hole 9 are tightly sealed after being inserted.

[0028] A number of sensor mounting cavities are provided at the rear side of the plug rod 7, which is convenient for the staff to install the required sensors in the sensor mounting cavities, such as detection components such as temperature sensors, pressure sensors and flow sensors.

[0029] A liquid sealing gasket is provided on the external thread of the connecting pipe 3 to improve the sealing effect of the threaded connection between the connecting pipe 3 and the connecting pipe 2 and the external connecting pipe 4.

[0030] The plug holes 12 on the plug block 11 are provided with three calibers, namely small holes, medium holes and large holes, which are convenient for the staff to use different specifications of connecting rods to perform rotary operations on the connecting pipe 3. Embodiment

[0031] In the normal working state, the connecting pipe 3 is tightened with the connecting pipe 2. The connecting pipe 3 presses the sealing valve seat 6 tightly on the valve body 1. The plug rod 7 is separated from the flow channel hole 9, and the medium flows normally through the valve body 1. When the sealing valve seat 6 is damaged due to erosion, corrosion or wear and causes the seal to fail, the staff uses a tool (such as a connecting rod) to insert it into the auxiliary rotation socket and rotate the connecting pipe 3 to separate it from the connecting pipe 2. During the process of unscrewing the connecting pipe 3, the plug rod 7 gradually approaches and inserts into the flow channel hole 9 of the internal baffle 8 of the external connecting pipe 4 to block the medium. The staff takes out the damaged sealing valve seat 6 and installs a new sealing valve seat 6. The connecting pipe 3 is screwed back to the connecting pipe 2 and tightened. The plug rod 7 is separated from the flow channel hole 9, and the medium resumes flowing, and the two-way pressure rotary ball valve resumes normal operation. The rapid on-line replacement of the sealing valve seat 6 is realized, without shutting down for maintenance, avoiding production interruption and cost increase; an auxiliary adjustment mechanism is adopted on the valve body 1, when the medium flow direction in the pipeline is from the direction of the external connecting pipe 4, the sealing valve seat 6 can be replaced without closing any switch; the matching design of the plug rod 7 and the baffle 8 ensures the medium plugging during the replacement of the sealing valve seat 6, improving the operation safety; the design of the sensor installation cavity facilitates the real-time monitoring of the valve operation state. Through the above embodiments, the present invention provides a two-way pressure rotary ball valve structure, meeting the requirements of the industrial pipeline system for the valve sealing performance and replacement convenience.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A two-way pressure-rotary ball valve structure, characterized in that: A connecting pipe is provided on the side of the valve body, and an auxiliary adjustment mechanism is provided on the connecting pipe. The auxiliary adjustment mechanism includes a connecting pipe and an outer connecting pipe. The surface of the connecting pipe is provided with an external thread. One end of the connecting pipe is threadedly connected to the connecting pipe, and the other end of the connecting pipe is threadedly connected to the outer connecting pipe. A connecting flange is provided on the outer connecting pipe. After the connecting pipe is screwed tightly with the connecting pipe, the sealing valve seat is pressed tightly on the valve body.

2. The structure of a two-way pressure-rotary ball valve according to claim 1, characterized in that: A plug rod is provided inside the connecting pipe. The front end of the plug rod is a conical structure. A baffle is provided inside the outer connecting pipe. A flow passage hole is provided on the baffle. The plug rod is in tight fit with the flow passage hole. When the connecting pipe is screwed tightly with the connecting pipe, the plug rod and the flow passage hole are in a separated state. When the connecting pipe is screwed tightly with the outer connecting pipe, the plug rod and the flow passage hole are in an inserted and closed state.

3. The structure of a two-way pressure-rotary ball valve according to claim 2, characterized in that: A circle of auxiliary rotation sockets is provided on the outer circumferential surface of the connecting pipe. The auxiliary rotation socket includes a fixed block and a plug-in block. The plug-in block is arranged on the side of the fixed block, and a plug-in hole is provided on the plug-in block.

4. A two-way pressure-rotary ball valve structure according to claim 3, characterized in that: A circle of installation grooves is provided on the end face of the connecting pipe connected to the connecting pipe, and the sealing valve seat is installed on the installation groove.

5. The structure of a two-way pressure-swirl ball valve according to claim 4, characterized in that: The sealing valve seat is installed on the installation groove of the connecting pipe through bolts.

6. A two-way pressure-rotary ball valve structure according to claim 5, characterized in that: Indicator markings are provided at both ends of the connecting pipe respectively, and the indicator markings are used to indicate whether the connecting pipe rotates to the set working position.

7. The structure of a two-way pressure-rotary ball valve according to claim 6, characterized in that: A sealing protective layer is provided on the outer surface of the plug rod.

8. A two-way pressure-rotary ball valve structure according to claim 7, characterized in that: A number of sensor installation cavities are provided at the rear side of the plug rod.

9. A two-way pressure-rotary ball valve structure according to claim 8, characterized in that: A liquid sealing gasket is provided on the external thread of the connecting pipe.

10. A bidirectional press-rotary ball valve structure according to claim 9, characterized in that: The plug-in holes on the plug-in block are provided with three calibers, namely small holes, medium holes and large holes.

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