Modular triple-valve double-acting ball valve

Abstract

The application relates to a modular three-valve double-acting ball valve, which comprises a modularly arranged valve body and a valve core assembly, the valve body is provided with a mounting port and a mounting chamber along a flow channel thereof; a socket switch assembly is arranged on one side of the valve body at the two sides of the flow channel, and the side socket serves as a flow channel inlet; the valve core assembly comprises a cover sealing ring frame and a ball core rod, the ball core rod comprises a valve ball core and a ball rod in an integrated structure; the cover sealing ring frame is provided with a ring frame body for mounting the valve ball core; the ring frame body comprises oppositely arranged ring seats for mounting sealing rings and ring-shaped sealing ring mounting grooves, the sealing ring mounting grooves are oppositely arranged with the socket; the ring frame body and the valve ball core are arranged in the mounting chamber, the ball rod is used for externally connecting a handle to drive the rotating valve ball core to control the on-off of the flow channel; the socket switch assembly comprises a socket piston plug and a switch control nut arranged in sequence along the reverse flow channel direction, the switch control nut drives the socket piston plug to move along the flow channel to control the opening and closing of the socket.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve ball valves, and particularly relates to a modular three-valve double-union ball valve. BACKGROUND

[0002] The union of the double-union ball valve is the English union joint, and the double-union ball valve is also a double-union ball valve. At present, the structure of the double-union ball valve on the market is basically composed of a valve body, a liner, a leak-proof ring, a ball core, a ball rod, a handle and the like. Each part is separate, and the assembly is generally performed by a special tool. The leak-proof ring, the sealing ring, the ball rod, the ball core and the liner are sequentially assembled from the hollow side of the valve body. The assembly operation is basically extended from the side water inlet end to the inside of the valve body, so that each connecting piece can only be assembled in the narrow space inside the valve body in a low-efficiency and tedious manner. The assembly process is professional and complex, and there are many accessories that are easy to scatter, resulting in high manufacturing cost and high product price after being put into the market.

[0003] The existing ordinary double-union ball valve liner sealing element is mostly connected with the valve body by threads. When the liner is rotated, the leak-proof ring on the liner is tightened and the ball core is compacted to form a sealing surface. If the installation is too tight, the leak-proof ring will excessively press the ball core, causing the ball core to be difficult to rotate or to affect the control of opening and closing. However, if it is too loose, the leak-proof ring will not compact the ball core, resulting in leakage, which is difficult to control in production.

[0004] In addition, the sealing ring and the flat bearing on the outside of the liner are sealed by rotating the nut. When the nut is screwed, the flat bearing and the sealing ring on the already sealed liner are rotated in the same direction, causing the leak-proof ring on the liner to press the ball core too tightly, making it difficult to rotate and affecting the opening and closing, or when disassembling, the liner is rotated in the opposite direction, causing the liner to be too loose and causing leakage.

[0005] In addition, the installation of the liner cover and the internal accessories requires professional personnel and professional tools to assemble, so that if the product is in the hands of ordinary users and problems occur during use, it is almost impossible to disassemble, repair or replace the accessories, making the ordinary ball valve on the market a disposable product that can only be discarded and replaced, and the replacement process requires the pipeline to be disassembled, which is time-consuming and labor-intensive, and also poses a safety risk, resulting in a huge waste.

[0006] In addition, when the ordinary ball valve is disassembled, replaced and repaired, the pipeline main gate or even the entire pipeline system needs to be closed first. If it is in a factory or large site, replacing a ball valve may directly affect other projects in the entire site, resulting in huge losses. In addition, there is still some residual medium (such as water, gas, etc.) in the pipeline system after the main gate is closed. When the ball valve is disassembled and repaired, the residual medium will inevitably leak, and if it is a dangerous medium, it will pose a safety risk, so the repair and replacement is extremely inconvenient. SUMMARY

[0007] In order to solve the above problems, the application provides a modular three-valve double-acting ball valve. The application mainly solves the problems of complex installation process and difficult maintenance of the ball valve. In addition, the application also solves the problem of closing the total gate for fault maintenance. The application provides a modular three-valve double-acting ball valve, which adopts the following technical scheme:

[0008] The modular three-valve double-acting ball valve comprises a valve body and a valve core assembly. The valve body and the valve core assembly are modularly arranged. The valve body is provided with a mounting port perpendicular to the flow passage, and a mounting chamber is provided in the middle of the flow passage and communicates with the mounting port.

[0009] The valve core assembly comprises a cover sealing ring frame and a ball core rod. The ball core rod comprises a valve ball core and a ball rod in an integrated structure. The cover sealing ring frame is provided with a ring frame body for rotatingly mounting the valve ball core. The ring frame body comprises oppositely arranged ring seats for mounting the ring seats of the sealing ring. A sealing ring mounting groove is provided on the ring seat in the ring direction and is smaller than the diameter of the ring seat. The sealing ring mounting groove is oppositely arranged with the socket of the flow passage of the valve body. The valve ball core can be rotatably mounted in the ring seat of the ring frame body.

[0010] The assembled ring frame body and valve ball core are placed in the mounting chamber. The valve core assembly is inserted into the valve body through upper or lower assembly. The valve ball core is driven to rotate by the ball rod to control the opening and closing of the flow passage.

[0011] In a preferred embodiment, the valve body is provided with a socket switch assembly on one side or both sides of the socket on both sides of the flow passage.

[0012] The socket switch assembly comprises a socket piston plug and a switch control nut arranged in sequence in the opposite direction of the flow passage. The switch control nut drives the socket piston plug to move forward and backward in the direction of the flow passage to control the opening and closing of the socket.

[0013] In a preferred embodiment, the mounting port is arranged at the upper end of the valve body. The cover sealing ring frame is sequentially provided with a ring frame body, a mounting body and a sealing layer in the mounting direction, and a ball rod through hole is provided through the mounting body and the sealing layer to adapt to the ball rod.

[0014] The cover sealing ring frame is integrally provided with a limiting post at one end of the ball rod extending out of the ball rod through hole. One end of the ball rod extends out of the limiting post and is used for mounting a handle.

[0015] In a preferred embodiment, the mounting port is arranged at the lower end of the valve body. The cover sealing ring frame is sequentially provided with a ring frame body and a sealing layer in the mounting direction. A ball rod through hole is provided through the side of the valve body opposite to the mounting port to adapt to the ball rod.

[0016] The valve body is provided with a limiting post at the through hole of the ball rod, and one end of the ball rod extends out of the limiting post and is used for mounting a handle.

[0017] In a preferred embodiment, the mounting port is provided in a rectangular round corner shape, a flat layer is arranged at the sealing layer arrangement position of the mounting port, and a spiral layer and a positioning layer are arranged on both sides of the flat layer in the mounting direction;

[0018] The positioning layer is provided with a step for abutting and positioning with the bottom surface of the sealing layer; and the spiral layer is adapted to a cover screw disc for locking the assembly of the valve core assembly and the valve body.

[0019] In a preferred embodiment, the cover screw disc is provided with a drag reduction ring at the fitting position of the mounting port;

[0020] When the cover screw disc is fitted to the mounting port at the upper end of the valve body, a mounting hole is arranged in the middle of the cover screw disc to movably fit the mounting body; and the mounting body is screwed with the cover screw disc through a limiting screw ring;

[0021] Or when the cover screw disc is fitted to the mounting port at the lower end of the valve body, a tool hole slot is arranged in the middle of the cover screw disc to fit an auxiliary tool.

[0022] In a preferred embodiment, the cross section of the mounting port is rectangular, and four groups of screw threads are arranged at the four edges of the rectangular cross section in the spiral layer of the mounting port; the screw threads are arc-shaped structures adapted to the spiral structure of the cover screw disc.

[0023] In a preferred embodiment, a plurality of first sealing rings are distributed on the ball rod for interference fit with the ball rod through hole;

[0024] A sealing groove is arranged on the sealing layer for interference fit with the flat layer;

[0025] A fourth sealing ring is arranged on the bottom surface of the sealing layer at the abutting position of the step of the positioning layer.

[0026] In a preferred embodiment, two limiting blocks are arranged at opposite positions along the circumference of the limiting post, and a limiting slot is arranged at the corresponding position of the limiting block of the handle; and the ring length of the limiting slot is set as one fourth of the inner circumference of the handle.

[0027] In a preferred embodiment, the check ring arranged in the ring seat is provided with a sealing ring groove on the side facing away from the valve ball core, and a check sealing ring is sleeved in the sealing ring groove.

[0028] In a preferred embodiment, the sealing surfaces of the water outlet hole and the water inlet hole in the mounting chamber are smooth end surfaces parallel to each other to adapt to the ring frame body.

[0029] In a preferred embodiment, the valve body is provided with a socket switch assembly on both sides of the flow channel.

[0030] In a preferred embodiment, the socket piston plug comprises a spherical plug and a piston body, a pipe socket is arranged on the side of the piston body opposite to the spherical plug; the pipe socket is hollow;

[0031] A limiting ring thread is arranged on the side wall of the pipe socket, and is screwed on the switch control nut.

[0032] In a preferred embodiment, a limiting stop ring is arranged at the connection between the pipe socket and the piston body, and a bayonet is arranged inwardly at the opening of the rear end of the switch control nut;

[0033] The limiting stop ring and the limiting ring thread are arranged at a distance; the pipe socket is inserted into the bayonet through the limiting stop ring, and the distance is adapted to the width of the bayonet.

[0034] In a preferred embodiment, a plurality of third sealing rings are arranged on the piston body, and the socket of the valve body is provided with an adapted channel which is adapted to the third sealing rings and is in interference fit with the third sealing rings.

[0035] In a preferred embodiment, the adapted channel is adapted to the travel of the third sealing rings along with the movement of the socket piston plug.

[0036] In a preferred embodiment, a T-shaped concave sealing seat is arranged in the flow channel on the side of the socket towards the socket piston plug, a plurality of openings are arranged on the side of the spherical plug of the socket piston plug, and the piston body is a hollow pipe, so that a channel is formed through the openings, the piston body and the pipe socket for flow;

[0037] The side of the T-shaped concave sealing seat facing the socket piston plug is a concave sealing surface for abutting against the spherical plug of the socket piston plug to block the flow.

[0038] In a preferred embodiment, a sealing seat limiting groove is arranged in the flow channel of the socket and is adapted to the T-shaped concave sealing seat, and the T-shaped limiting stop edge of the T-shaped concave sealing seat is inserted into the sealing seat limiting groove for fixation.

[0039] A water flow hole is arranged in the T-shaped concave sealing seat.

[0040] In a preferred embodiment, a sealing seat ring is arranged on the socket, and the water inlet and the water outlet of the socket are narrowed to form the sealing seat ring, and the sealing seat ring is provided with water flow.

[0041] The T-shaped concave sealing seat and the sealing seat ring are arranged in sequence along the water flow direction.

[0042] In a preferred embodiment, a water containing groove is arranged in the flow channel of the socket near the socket piston plug; the water containing groove and the T-shaped concave sealing seat are arranged in sequence along the inward moving direction of the socket piston plug.

[0043] In a preferred embodiment, a threaded mounting end is arranged on the pipe at the socket, and the threaded stroke of the threaded mounting end is smaller than that of the switch control nut.

[0044] The switch control nut is screwed to the tightest position of the threaded mounting end to close the flow of the socket.

[0045] In a preferred embodiment, a limiting pin is arranged at the screw hole edge of the switch control nut; and an annular groove is arranged around the threaded mounting end at the socket.

[0046] The switch control nut is screwed to the threaded stroke of the limiting pin beyond the threaded mounting end, and is screwed into the annular groove.

[0047] In a preferred embodiment, the annular groove cooperates with the limiting pin to limit the screwing out of the switch control nut from the threaded mounting end.

[0048] The limiting pin moves back and forth along the annular groove to accommodate the screwing movement of the switch control nut.

[0049] In a preferred embodiment, a plurality of assisting holes are arranged along the circumferential side of the switch control nut, which are adapted to a stick tool to assist the rotation of the switch control nut.

[0050] In summary, the present application has the following advantages:

[0051] 1. The present application provides a modular three-valve double-acting ball valve which can be disassembled, replaced and maintained by users, and only the screw valve of the socket switch assembly at both ends of the ball valve needs to be closed to cut off the water path in front and behind, so that the valve body installation chamber is in a safe operating environment with water cut off in front and behind, the damaged valve core module is pulled out and replaced with a new valve core module, which is time-saving, labor-saving, safe and fast, greatly reduces waste, and produces great economic value.

[0052] 2. The modular three-valve double-acting ball valve provided by the present application sets the valve core assembly and the socket switch assembly to form a three-valve structure, if the main ball valve has an unexpected situation, the double-sided valve can act as a temporary switch to avoid the out-of-control of the pipeline, and it is double insurance, the valve core assembly is modularly arranged to realize the reuse of the ball valve, and since the universal ordinary tool can disassemble the packaging nut and disc, ordinary users can also realize quick replacement and maintenance.

[0053] 3. The application provides a modularly arranged valve body and valve core assembly, the valve core assembly adopts a one-piece structure of a valve ball core and a ball rod, and a fixedly arranged leak-proof ring, the valve body is not arranged with scattered parts, the valve ball core and the leak-proof ring are fixedly installed and matched, are not affected by the rotation of the outer nut of the valve body, and ensure that the valve ball core and the leak-proof ring cannot be excessively pressed or excessively loose, and the normal use of the ball valve is affected.

[0054] 4. Since the assembly of the valve core module is all completed outside the valve body, the operation space is large, the assembly parts are few, and the assembly process is greatly simplified, so that the production is more convenient and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 is an upper assembly exploded view of the valve body and valve core assembly of the first embodiment;

[0056] Figure 2 is a structural view of the valve core assembly of the first embodiment;

[0057] Figure 3 is an exploded view of the valve core assembly of the first embodiment;

[0058] Figure 4 is a structural view of the valve body of the first embodiment;

[0059] Figure 5 is a structural sectional view of the valve body of the first embodiment;

[0060] Figure 6 is an installation exploded view of the valve body and socket switch assembly of the third embodiment;

[0061] Figure 7 is a view of the socket switch assembly of the third embodiment in an open flow state;

[0062] Figure 8 is a sectional view of the socket switch assembly of the third embodiment in a third position;

[0063] Figure 9 is a view of the socket switch assembly of the third embodiment in a closed flow state

[0064] Figure 10 is a sectional view of the socket switch assembly of the third embodiment in a fourth position;

[0065] Figure 11 is a lower assembly exploded view of the valve body and valve core assembly of the second embodiment;

[0066] Figure 12 is an assembled view of the double-leak-proof ball valve of the second embodiment;

[0067] Figure 13 is a handle installation view of the second embodiment.

[0068] Explanation of reference signs: 1, valve body; 11, socket; 111, sealing seat ring; 12, mounting port; 121, spiral layer; 122, flat layer; 123, positioning layer; 13, mounting chamber; 131, water inlet hole; 132, water outlet hole; 14, cover screw; 141, tool hole groove; 15, decorative cover; 16, T-shaped concave sealing seat; 161, stop edge; 162, recessed plugging surface; 17, threaded mounting end; 18, annular groove; 19, water containing groove; 2, valve core assembly; 21, cover check ring frame; 211, ball rod through hole; 212, ring frame body; 213, mounting body; 214, sealing layer; 22, ball core rod; 221, valve ball core; 222, ball rod; 23, check ring; 24, check sealing ring; 25, first sealing ring; 26, second sealing ring; 27, limiting screw ring; 28, limiting pile; 281, limiting block; 29, fourth sealing ring; 3, handle; 31, limiting groove; 4, socket switch assembly; 41, socket piston plug; 411, spherical plug; 412, water outlet; 413, piston body; 414, socket connector; 415, limiting ring screw; 42, switch control nut; 421, advancing stop ring; 43, limiting ring; 44, third sealing ring; 45, limiting stop ring; 451, advancing stop ring position; 46, limiting pin; 47, power hole. DETAILED DESCRIPTION

[0069] The embodiment of the application discloses a modular three-valve double-acting ball valve, which aims to provide a ball valve with front and rear switches, which can be quickly disassembled, repaired, replaced and installed by using ordinary tools without disassembling the ball valve and without using the inner lining cover when a fault occurs.

[0070] In order to make the above-mentioned purpose, features and advantages of the application more apparent, the following will be further explained in detail with reference to the accompanying drawings. Figure 1 The application is further described in detail.

[0071] According to the modular design of the modular three-valve double-acting ball valve, the valve body 1 and the valve core assembly 2 are mainly divided into two parts, the valve body 1 is the main part of the pipeline system and is set as a firm part, and the valve core assembly 2 is a switch part and is set as a consumable part, so that the valve core assembly 2 can be quickly replaced by using ordinary wrenches to screw off the screw cover, pull out the damaged valve core module, insert a new valve core module and screw the screw cover tightly after the valve core assembly 2 is damaged, thereby saving time, effort and cost.

[0072] The valve body 1 related to the application is a valve body 1 provided with three-way openings, such as Figure 1Two openings arranged in the same axis are the sockets 11, which are formed through the pipeline flow channel for passing fluid medium. One opening arranged perpendicularly to the pipeline is the mounting port 12, which is used for mounting the valve core assembly 2.

[0073] As Figure 4 The valve body 1 is provided with a mounting chamber 13 inwardly from the mounting port 12, which is formed through the sockets 11 on both sides. The four side end faces of the mounting chamber 13 are designed as planes without sealing structure, so as to reduce the installation of dispersed parts in the mounting chamber 13 and the process steps of the installation of the dispersed parts.

[0074] The valve core assembly 2 of the present application comprises a cover sealing ring frame 21 and a ball core rod 22, as Figure 2 The ball core rod 22 is integrally provided with a valve ball core 221 and a ball rod 222, which greatly shortens the machining process and only needs one-time mold injection. A through hole is arranged in the axial center of the valve ball core 221, which realizes the opening and closing of the socket 11 of the valve body 1 by rotating and misplacing with the sealing ring 23 arranged on the cover sealing ring frame 21.

[0075] As Figure 3 A ball rod through hole 211 is arranged in the middle of the cover sealing ring frame 21, which is used for inserting the ball rod 222. Two or more first sealing rings 25 are arranged on the ball rod 222 at intervals, which are used for cooperating with the installation of the ball rod through hole 211 and forming interference fit sealing with the side wall of the ball rod through hole 211.

[0076] The cover sealing ring frame 21 is sequentially provided with a ring frame body 212, a mounting body 213 and a sealing layer 214 along the insertion direction. The ball rod through hole 211 penetrates the mounting body 213 and the sealing layer 214. The ring frame body 212 comprises oppositely arranged ring seats for mounting the sealing ring 23 and sealing ring mounting grooves with the same ring and smaller diameter than the ring seat. The sealing ring mounting grooves are arranged opposite to the socket 11. The sealing ring 23 is fixed by pressing into the ring seat. The sealing ring 23 is provided with a sealing ring groove on the side away from the valve ball core 221, and the sealing ring groove is sleeved with a sealing ring 24. The sealing ring 24 is half-immersed and press-fitted, which is used for sealing the water inlet hole 131 and the water outlet hole 132 in the mounting chamber 13.

[0077] When installing the cover sealing ring frame 21 and the ball core rod 22, the ball core rod 22 is inserted into the ball rod through hole 211. The end face of the valve ball core 221 provided with the water outlet through hole is aligned with the through hole face of the sealing ring 23 for adaptive installation. The valve ball core 221 is switched to the spherical surface or the water outlet through hole face by rotating the ball rod 222 to cut off or conduct the water flow.

[0078] A second sealing ring groove is arranged on the sealing layer 214 for mounting a second sealing ring 26, which is also fixed by being pressed into the second sealing ring groove by half-submersion in a pressing manner. A screw layer 121, a flat layer 122 and a positioning layer 123 are sequentially arranged in the mounting direction inwardly at the mounting port 12 of the valve body 1. The positioning layer 123 is expanded outwardly to form a step, which is used for abutting and positioning with the bottom of the sealing layer 214, facilitating installation. Further, a fourth sealing ring 29 is arranged at the abutting position between the bottom of the sealing layer 214 and the step, forming a compression seal therebetween. The fourth sealing ring 29 is an O-shaped sealing ring for compression seal. When the valve core assembly 2 is installed into the valve body 1 and tightened and compacted, the fourth sealing ring 29 is compressed on the step of the positioning layer 123. The fourth sealing ring 29 forms an interference fit seal with the flat layer 122 and two seals with the second sealing ring 26, providing double insurance.

[0079] The sealing layer 214 is assembled with the flat layer 122 and forms a movable compression to achieve air-tightness seal through the interference fit of the second sealing ring 26. The ring holder 212 is arranged in the mounting cavity 13 arranged inwardly in the mounting port 12. The cover screw disc 14 is arranged through the mounting body 213. The mounting hole in the middle of the cover screw disc 14 movably sleeves the mounting body 213. One end of the mounting body 213 passes through the mounting hole and is fixed by a limiting screw ring 27. Since the limiting screw ring 27 is fixed on the mounting body 213 by screwing, the limiting screw ring 27 is lifted together with the cover screw disc 14 when the cover screw disc 14 is disassembled and lifted. The limiting screw ring 27 drives the mounting body 213 to lift, so that the valve core assembly 2 is pulled out.

[0080] The The bottom of the cover screw disc 14 abuts on the end face of the sealing layer 214 and is screwed with the screw thread groove of the screw layer 121 to fix the cover leak-proof ring holder 21 on the valve body 1, achieving the effect of compacting and covering. Optionally, a decorative cover 15 can be arranged on the upper end of the cover screw disc 14 to increase the appearance.

[0081] It is worth noting that a drag-reducing ring is arranged at the bottom end of the cover screw disc 14 to reduce the friction surface and thus reduce the friction force. When rotating, the friction force of the cover screw disc 14 during screwing can be effectively reduced to achieve the purpose of easy rotation. The cross section of the mounting port 12 is rectangular. Four groups of screw threads are arranged in the screw layer 121 of the mounting port 12 in the four sides of the rectangle. The screw threads are arc-shaped structures, which are adapted to the screwing structure of the cover screw disc 14.

[0082] As Figure 1, the installation of the valve core assembly 2 is that the ball stem 222 of the ball core rod 22 is inserted into the cover sealing ring frame 21 through the ball stem through hole 211, so that the valve ball core 221 is arranged in the ring frame body 212, the cover sealing ring frame 21 is provided with a limiting post 28 on one end of the ball stem 222 extending out of the ball stem through hole 211, the limiting post 28 is an integral structure with the cover sealing ring frame 21, the one end of the ball stem 222 extending out of the ball stem through hole 211 is used for installing a handle 3, and the ball stem 222 is driven to rotate by the handle 3, so that the ball core rod 22 rotates in the cover sealing ring frame 21, so that the valve ball core 221 of the ball core rod 22 can be selected to be in the first position or the second position

[0083] As Figure 13 The handle 3 is limitedly matched with the limiting post 28, the handle 3 is provided with two limiting blocks 281 in the relative position of the limiting post 28, the handle 3 is provided with a limiting groove 31 corresponding to the limiting block 281, the ring length of the limiting groove 31 is set to be one fourth of the circumference of the inner circle of the handle 3, the handle 3 is driven to rotate by 90° by the cooperation of the limiting block 281 and the limiting groove 31, and the 90° rotation angle is just the angle for switching the ball core spherical surface and the ball core through hole surface to be open or closed.

[0084] The cover screw disc 14 and the cover sealing ring frame 21 are limitedly screwed by a limiting screw ring 27, and the cover sealing ring frame 21 is provided with a screw line for screwing the limiting screw ring 27 at the lower end of the limiting post 28.

[0085] In the first position, the water outlet through hole of the valve ball core 221 of the ball core rod 22 corresponds to the sealing ring 23 of the ring frame body 212, the ball core through hole of the valve ball core 221 communicates with the through hole of the sealing ring 23, at this time, the ball valve is in the connected state and can be used for normal pipeline transportation work; in the second position, the through hole of the valve ball core 221 of the ball core rod 22 is misaligned with the sealing ring 23 of the ring frame body 212, the ball core spherical surface of the valve ball core 221 abuts against the through hole of the sealing ring 23, at this time, the ball valve is in the disconnected state, and the ball valve stops the pipeline transportation work.

[0086] The working principle of the ball valve is that the two sealing rings 23 tightly abut and clamp the valve ball core 221, the spherical surface and the end surface with the water outlet through hole of the valve ball core 221 are driven to rotate by the ball stem 222 to complete the spherical surface sealing or the water outlet through hole and the sealing ring 23 are connected to complete the opening and closing.

[0087] Valve core assembly 2 and valve body 1 are installed, and the valve core assembly 2 is installed downward in the installation chamber 13 with the ball core rod 22. When the sealing layer 214 of the cover sealing ring frame 21 is pressed against the positioning layer 123, the ball core rod 22 is fully immersed in the installation chamber 13, the sealing layer 214 is in interference fit with the flat layer 122 for air-tight sealing, and the cover screw disc 14 is screwed. In order to facilitate installation, the end surface of the installation chamber 13 matched with the upper sealing ring 23 of the ring frame body 212 is a smooth plane, such as Figure 4 , specifically, the sealing surface of the installation chamber 13 where the water outlet hole 132 and the water inlet hole 131 are located is a smooth end surface parallel to each other, such as Figure 5 , when the smooth plane is matched and installed with the ring frame body 212 of the cover sealing ring frame 21, the sealing ring 24 arranged on the cover sealing ring frame 21 will not leak.

[0088] Specifically, when the valve core assembly 2 is installed into the valve body 1, the ring frame body 212 drives the sealing ring 23 and the sealing ring sealing ring 24 to cut into the parallel sealing surface of the installation chamber 13. When the ring frame body 212 drives the sealing ring 23 to cut into the water inlet hole 131 and the water outlet hole 132 to cover the water inlet hole 131 and the water outlet hole 132, the sealing ring through hole coincides with the water inlet and outlet hole 132 and the ball core through hole to form a water flow channel. Since the sealing ring sealing ring 24 is half-immersed and pressed into the sealing ring sealing ring groove, the sealing ring sealing ring 24 on the sealing ring 23 is in interference fit with the sealing surface of the water inlet hole 131 and the sealing surface of the water outlet hole 132 to seal the water inlet hole 131 and the water outlet hole 132. Two staggered objects must be parallel to slide freely, so the cross section of the installation port 12 is also rectangular, and the four sides of the installation port 12 are rounded in the installation direction. The distance shape of the rounded corner of the installation port 12 is designed to provide more uniform sealing force for the sealing ring and smaller packaging area.

[0089] When installing or dismounting the valve core assembly 2 and the valve body 1, it should be noted that the water outlet through hole of the valve ball core 221 of the ball core rod 22 needs to be correspondingly arranged with the sealing ring 23 of the ring frame body 212 before installation, so that the valve core assembly 2 can be successfully inserted into or separated from the installation port 12 of the valve body 1. The main reason is that if the through hole of the valve ball core 221 is misaligned with the sealing ring 23 of the ring frame body 212, the spherical arc surface of the valve ball core 221 will partially protrude from the sealing ring 23. Since the ring frame body 212 and the installation port 12 are adaptively sized, the protrusion of the valve ball core 221 is limited at the installation port 12, so that the ring frame body 212 cannot be normally inserted into or pulled out of the installation port 12.

[0090] The installation method of the valve core assembly 2 and the valve body 1 involved in the present application has two kinds, and the above structure is the installation method of the first embodiment, and the integral structure is as follows Figure 7The first embodiment is installed from the upper end of the ball valve, which is an upper installation structure.

[0091] The second embodiment is a lower installation structure, and the integral installation structure is as follows Figure 12 That is, the installation is from the lower end of the ball valve, as shown in Figure 11 The difference between this installation method and the first embodiment is that the installation port 12 is arranged at the lower end of the valve body 1, and the ball rod through hole 211 is arranged in the valve body 1 from the top of the installation port 12, and the cover sealing ring frame 21 is arranged as a base, which includes a ring frame body 212 and a sealing layer 214. The ring frame body 212 is consistent with the ring frame body 212 of the upper installation structure, and is used to install the valve ball core 221. The bottom of the valve ball core 221 abuts against the bottom of the ring frame body 212, and the ball rod 222 arranged on the valve ball core 221 extends out of the upper opening of the ring frame body 212.

[0092] The installation port 12 of the valve body 1 is sequentially provided with a spiral layer 121, a flat layer 122 and a positioning layer 123. The flat layer 122 and the positioning layer 123 are used for sealing assembly with the sealing layer 214 of the cover sealing ring frame 21. The bottom surface of the sealing layer 214 of the cover sealing ring frame 21 is arranged as a flat surface, which is used for screwing with the cover screw disc 14.

[0093] Further, a limiting post 28 is integrally arranged at the upper end of the valve body 1, and the limiting post 28 is located at the ball rod through hole 211 and is connected with the ball rod through hole 211. As shown in Figure 11 The valve ball core 221 of the lower installation structure is arranged as a flat bottom in cooperation with the bottom of the ring frame body 212, so that the valve ball core 221 can be seated on the ring frame body 212 to maintain the position, and the ball rod 222 can be stably and easily inserted out of the ball rod through hole 211.

[0094] The lower installation assembly structure is that after the valve core assembly 2 is assembled by inserting the valve ball core 221 into the ring frame body 212, the assembled valve core assembly 2 is inserted into the installation chamber 13 through the installation port 12 with the ball rod 222 vertically upward, until the sealing layer 214 of the cover sealing ring frame 21 abuts against the positioning layer 123, the ball core rod 22 is entirely inserted into the installation chamber 13, the ball rod 222 is inserted out of the ball rod through hole 211 arranged on the valve body 1 and is installed with the handle 3.

[0095] Then, the cover screw disc 14 is screwed and abuts against the bottom surface of the sealing layer 214 from the lower installation port 12 to realize the screwing and fixing, that is, the installation is completed.

[0096] The cap screw plate 14 for the lower part does not have a mounting hole for the ball rod 222 to make way. Instead, a tool hole groove 141 is provided in the middle of the outer side of the cap screw plate 14 to accommodate auxiliary tools for auxiliary disassembly and rotation of the cap screw plate 14.

[0097] In the third embodiment of this application, a socket switch assembly 4 for disassembly and replacement is provided, such as... Figure 6 The socket switch assembly 4 is installed on the sockets 11 of the valve body 1, which are distributed on both sides of the valve body 1 along the same axis. It can be installed on the side inflowing the fluid medium, or on both sides.

[0098] The socket switch assembly 4 includes a socket piston plug 41, a switch control nut 42 and a limiting ring 43 arranged sequentially along the installation direction. The socket piston plug 41 is fitted into the switch control nut 42 and the limiting ring 43 is tightened to limit the position to form the socket switch assembly 4.

[0099] The socket piston plug 41 includes a spherical plug 411 and a piston body 413. A pipe socket 414 is provided on the side of the piston body 413 opposite to the spherical plug 411 as a joint for the pipe. A pipe through hole is provided through the pipe socket 414 for the pipe socket channel. A limiting ring 45 is provided at the connection between the pipe socket 414 and the piston body 413. A limiting ring thread 415 is provided on the side wall of the pipe socket 414. The limiting ring thread 415 is used to screw with a limiting ring 43. The limiting ring 43 and the limiting ring thread 415 screw together to limit the socket piston plug 41, and the socket piston plug 41 is installed and fixed on the switch control nut 42.

[0100] A push-in retaining ring position 451 is formed between the limiting retaining ring 45 and the limiting ring thread 415 at a distance. This push-in retaining ring position 451 is used to fit the push-in retaining ring 421 after the switch control nut 42 is fitted onto the socket piston plug 41. A push-in retaining ring 421 is provided at the rear of the switch control nut 42. The push-in retaining ring 421 is formed by the narrowing of the rear opening of the switch control nut 42 to form a hollow retaining slot, which is used to insert the socket piston plug 41 and move it into the limiting retaining ring 45 and the screwed limiting ring 43. As the switch control nut 42 moves back and forth, the push-in retaining ring 421 pushes the limiting retaining ring 45 and the limiting ring 43 to drive the socket piston plug to move back and forth.

[0101] The switch control nut 42 is screwed into the socket 11 pipe, and the socket piston plug 41 is completely submerged in the socket 11 pipe. The switch control nut 42 is screwed into the socket 11 pipe, and the forward or backward movement of the screw controls the socket piston plug 41 to be in the third or fourth position, thereby controlling the on / off state of the socket 11. (Refer to...) Figure 8 or Figure 10 .

[0102] A T-shaped concave sealing seat 16 is arranged in the passage channel of the spout 11 on the side facing the spout piston plug 41. The T-shaped concave sealing seat 16 abuts against the spherical plug 411 of the spout piston plug 41 to block the opening or release the guide. The piston body 413 is hollow for water passage and moves forward and backward to adapt to the spout channel. A plurality of water outlets 412 are arranged on the side of the spherical plug 411 of the spout piston plug 41 for water passage of the piston body 413.

[0103] The T-shaped concave sealing seat 16 is made of elastic sealing material such as rubber or silicone. A sealing seat limiting groove for installing the T-shaped concave sealing seat 16 is arranged in the passage of the spout 11 away from the installation chamber 13. The T-shaped concave sealing seat 16 includes a retaining edge 161 for fixed installation on the spout 11 and a recessed blocking surface 162. The T-shaped concave sealing seat 16 is fixed by being pressed into and clamped in the sealing seat limiting groove through the retaining edge 161. The recessed blocking surface 162 is used to abut against the spout piston plug 41 to close the water passage. When the spout piston plug 41 is in the fourth position, the spherical plug 411 contacts and adapts to the recessed blocking surface 162 of the T-shaped concave sealing seat 16. The flow channel through hole of the T-shaped concave sealing seat 16 is blocked by the spherical plug 411. With further pressurization of the spout piston plug 41, the entire T-shaped concave sealing seat 16 is compacted and sealed on the sealing seat ring 111, blocking the water inlet and outlet holes, and completing the closing of the valve.

[0104] Two or more third sealing rings 44 are arranged on the piston body 413 of the spout piston plug 41. An adapting passage is arranged on the spout 11 of the valve body 1 for installing the third sealing ring 44. The adapting passage is a travel channel for the third sealing ring 44. The travel channel is in interference fit with the third sealing ring 44. When the spout piston plug 41 moves alternately in the third position and the fourth position, the third sealing ring 44 can move in the travel channel without running out of the spout 11, thereby preventing sealing failure and leakage.

[0105] As Figure 7 -8. When the spout piston plug 41 is in the third position, the spout piston plug 41 is away from the T-shaped concave sealing seat 16 arranged in the spout 11, so that the flow channel of the spout 11 is open. At this time, the passage is in normal flow state. Figure 9 -10. When the spout piston plug 41 is in the fourth position, the spout piston plug 41 abuts against the T-shaped concave sealing seat 16 in the spout 11, so that the flow channel of the spout 11 is closed. At this time, the passage is in blocked flow state.

[0106] It is worth mentioning that the flow channel of the socket 11 is provided with a water containing groove 19 near the socket piston plug 41, and Figure 5 ; the water containing groove 19 and the T-shaped concave sealing seat 16 are sequentially arranged in the direction of moving into the socket piston plug 41. The water containing groove 19 exists because if the position of the water outlet 412 is not expanded, the water flowing from the periphery of the piston ball head has no place to contain, and then is blocked at this position and cannot flow out from the recessed spherical surface through hole of the T-shaped concave sealing seat 16.

[0107] The socket 11 of the valve body 1 is provided with a sealing seat ring 111 at the position towards the water outlet hole 132 or the water inlet hole 131, which is formed by the narrowing protrusion of the socket at the water inlet and outlet holes, as shown in Figure 5 When the switch control nut 42 is screwed to press the socket piston plug 41 towards the T-shaped concave sealing seat 16, when the spherical plug 411 of the piston body 431 is in contact with the recessed sealing surface 162 of the T-shaped concave sealing seat 16, the flow channel through hole of the T-shaped concave sealing seat 16 is blocked by the spherical plug 411, and as the socket piston plug 41 is further pressed, the entire T-shaped concave sealing seat 16 is compacted and sealed on the sealing seat ring 111, blocking the water inlet and outlet holes, and completing the closing of the valve.

[0108] A threaded mounting end 17 is arranged in the pipeline of the socket 11, the threaded stroke of the threaded mounting end 17 is smaller than that of the switch control nut 42, and the switch control nut 42 is screwed into the threaded mounting end 17 to the tightest position for closing, at which time the socket piston plug 41 is located at the fourth position, and the switch control nut 42 is unscrewed to the position where the limiting pin 46 is rotated outward and abuts against the protruding end face of the threaded mounting end 17 for opening, at which time the socket piston plug 41 is located at the third position.

[0109] An annular groove 18 is arranged around the threaded mounting end 17 at the socket 11, which is formed by the height difference between the threaded protrusion of the threaded mounting end 17 and the pipeline end face of the body of the socket 11, the distance between the side wall of the valve body 1 and the threaded mounting end 17 arranged on the socket 11 is the width of the annular groove 18, and the limiting pin 46 is arranged at the edge of the screw hole of the switch control nut 42.

[0110] When the socket piston plug 41 is located at the third position, the switch control nut 42 is screwed into the annular groove 18 beyond the threaded stroke of the threaded mounting end 17 and downwardly, and abuts against the protruding end face of the threaded mounting end 17, and when the switch control nut 42 is unscrewed, the limiting pin 46 can stop rotating by abutting against the protruding end face of the threaded mounting end 17, which ensures that the socket piston plug 41 will not fall due to the unscrewing of the switch control nut 42, causing leakage accidents, and ensures safety.

[0111] When the spigot piston plug 41 needs to move to the fourth position, the switch control nut 42 is screwed to the tightest position along the threaded stroke of the threaded end 17, and in the process of screwing, the limit pin 46 moves back and forth along the width of the annular groove 18 to accommodate the screwing movement of the switch control nut 42.

[0112] The present application has a plurality of booster holes 47 circumferentially formed on the peripheral wall of the switch control nut 42, and a screwdriver or other stick tool can be inserted into the hole. When the switch control nut 42 is difficult to rotate or turn, a screwdriver or other stick tool can be inserted to assist in rotating more easily.

[0113] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A modular triple-valve double-acting ball valve, comprising a valve body and a valve core assembly; characterized in that: The valve body and the valve core assembly are modularly arranged, the valve body is provided with a mounting port vertically to the flow channel, and a mounting chamber is provided through the mounting port and the middle section of the flow channel; The valve core assembly comprises a cover sealing ring frame and a ball core rod, the ball core rod comprises a valve ball core and a ball rod in an integrated structure, the cover sealing ring frame is provided with a ring frame body for rotatably mounting the valve ball core, the ring frame body comprises oppositely arranged ring seats for mounting sealing rings, the ring seats are provided with sealing ring mounting grooves in the ring direction and smaller than the diameters of the ring seats, the sealing ring mounting grooves are oppositely arranged to the sockets of the flow channel of the valve body, and the valve ball core is rotatably mounted in the ring seats of the ring frame body; The assembled ring frame body and valve ball core are arranged in the mounting chamber, the valve core assembly is assembled by being inserted into the valve body from the top or the bottom, the valve ball core is driven to rotate by the ball rod to control the opening and closing of the flow channel; The valve body is provided with socket switch assemblies at the sockets on both sides of the flow channel, the socket switch assembly comprises a socket piston plug and a switch control nut arranged in sequence along the mounting direction, the switch control nut drives the socket piston plug to move forward and backward along the mounting direction to control the opening and closing of the socket; The socket piston plug comprises a spherical plug and a piston body, a pipe socket is arranged on the side of the piston body opposite to the spherical plug, the pipe socket is hollow, a limiting ring thread is arranged on the side wall of the pipe socket, and the limiting ring is screwed on the switch control nut through the limiting ring thread; A limiting stop ring is arranged at the connection between the pipe socket and the piston body, a clamping opening is inwardly narrowed at the rear end of the switch control nut, the limiting stop ring and the limiting ring thread are arranged with a spacing therebetween, the pipe socket is clamped in the clamping opening through the limiting stop ring, and the spacing distance is adapted to the width of the clamping opening; The socket piston plug is provided with a plurality of openings on the side of the spherical plug, the piston body is a hollow pipe, and a channel is formed through the openings, the piston body and the pipe socket for flow.

2. The modular triple-valve dual-port ball valve of claim 1, wherein: The mounting port is arranged at the upper end of the valve body, the cover sealing ring frame is sequentially provided with a ring frame body, a mounting body and a sealing layer along the mounting direction, and a ball rod through hole is arranged through the mounting body and the sealing layer to adapt to the ball rod; The cover sealing ring frame is integrally provided with a limiting post at one end of the ball rod extending out of the ball rod through hole, and one end of the ball rod extends out of the limiting post and is used for mounting a handle.

3. The modular triple-valve dual-port ball valve of claim 1, wherein; The mounting port is arranged at the lower end of the valve body, the cover sealing ring frame is sequentially provided with a ring frame body and a sealing layer along the mounting direction, and a ball rod through hole is arranged through the valve body on the side opposite to the mounting port to adapt to the ball rod; The valve body is provided with a limiting post through the ball rod through hole, and one end of the ball rod extends out of the limiting post and is used for mounting a handle.

4. The modular triple-valve dual-port ball valve of claim 2 or 3, wherein; The mounting port is arranged as a rectangular round corner, a flat layer is arranged at the mounting position of the sealing layer, and a spiral layer and a positioning layer are arranged on both sides of the flat layer along the mounting direction; The positioning layer is provided with a step for abutting and positioning with the bottom surface of the sealing layer; the spiral layer is adapted to a cover screw disc for locking the assembly of the valve core assembly and the valve body.

5. The modular triple-valve dual-port ball valve of claim 4, wherein: The cover screw disc is provided with a drag reduction ring at the fitting position of the mounting port; When the cover screw disc is fitted to the mounting port on the upper end of the valve body, a mounting hole is arranged in the middle of the cover screw disc to movably fit the mounting body; the mounting body is screwed with the cover screw disc through a limiting screw ring; Or when the cover screw disc is fitted to the mounting port on the lower end of the valve body, a tool hole groove is arranged in the middle of the cover screw disc to adapt to an auxiliary tool.

6. The modular triple-valve dual-port ball valve of claim 4, wherein: The cross section of the mounting port is rectangular, and four groups of screw threads are arranged on the four sides of the mounting port in the spiral layer, the screw threads are arc-shaped structures, and are adapted to the spiral structure of the cover screw disc.

7. The modular triple-valve dual-port ball valve of claim 4, wherein: A plurality of first sealing rings are distributed on the ball rod, and are used for interference fit with the through hole of the ball rod; A sealing groove is arranged on the sealing layer, and a second sealing ring is sleeved in the sealing groove, and is used for interference fit with the flat layer; A fourth sealing ring is arranged on the bottom surface of the sealing layer at the abutting position of the step of the positioning layer.

8. The modular triple-valve dual-port ball valve of claim 1, wherein: A sealing ring groove is arranged on one side of the leakage stop ring of the ring seat which is away from the valve ball core, and a leakage stop ring is annularly sleeved in the sealing ring groove.

9. The modular triple-valve dual-port ball valve of claim 1, wherein: The sealing surfaces of the water outlet hole and the water inlet hole in the mounting chamber are smooth end surfaces which are parallel to each other, so as to adapt to the ring frame body.

10. The modular triple-valve dual-port ball valve of claim 1, wherein: A plurality of third sealing rings are arranged on the piston body, and the spout of the valve body is adapted to the third sealing ring and is provided with an adapting channel, the adapting channel is in interference fit with the third sealing ring.

11. The modular triple-valve dual-port ball valve of claim 10, wherein: The adapting channel is adapted to the third sealing ring and moves along with the stroke of the spout piston plug.

12. The modular triple-valve dual-port ball valve of claim 1, wherein: A T-shaped concave sealing seat is arranged in the flow channel on the side of the spout which faces the spout piston plug; The side of the T-shaped concave sealing seat which faces the spout piston plug is a recessed plugging surface, which is used for abutting and plugging with the plug of the spout piston plug to control the closing of the spout.

13. The modular triple-valve dual-port ball valve of claim 12, wherein: The flow channel of the spout is provided with a sealing seat limiting groove which is adapted to the T-shaped concave sealing seat, and the T-shaped limiting edge of the T-shaped concave sealing seat is clamped into the sealing seat limiting groove to be fixed. A water flow through hole is arranged in the T-shaped concave sealing seat.

14. The modular triple-valve dual-port ball valve of claim 12, wherein: A sealing seat ring is arranged at the spout, and the water inlet and the water outlet of the spout are narrowed to form the sealing seat ring, and water flows in the sealing seat ring. The T-shaped concave sealing seat and the sealing seat ring are sequentially arranged in the inward movement direction of the spout piston plug.

15. The modular triple-valve dual-port ball valve of claim 12, wherein: A water containing groove is arranged in the flow channel of the spout close to the spout piston plug, and the water containing groove and the T-shaped concave sealing seat are sequentially arranged in the inward movement direction of the spout piston plug.

16. The modular triple-valve dual-port ball valve of claim 1, wherein: A threaded mounting end is arranged on the pipeline at the spout, and the thread stroke of the threaded mounting end is smaller than the thread stroke of the switch control nut. The switch control nut is screwed to the most tight position of the threaded mounting end to close the flow of the spout.

17. The modular triple-valve dual-port ball valve of claim 16, wherein: A limiting pin is arranged at the screw edge of the switch control nut, and an annular groove is arranged around the threaded mounting end at the spout. The switch control nut is screwed to the limit pin beyond the threaded travel of the threaded mounting end, and the limit pin is screwed down into the annular groove.

18. The modular triple-valve dual-port ball valve of claim 17, wherein: The annular groove cooperates with the limit pin to limit the rotation of the switch control nut out of the threaded mounting end. The limit pin moves back and forth along the annular groove to accommodate the rotation of the switch control nut.

19. The modular triple-valve dual-port ball valve of claim 1, wherein: A plurality of booster holes are provided on the switch control nut along the circumferential side to adapt a stick tool to assist the rotation of the switch control nut.

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