Condenser cylinder cutting bidirectional sealing butterfly valve

Abstract

The invention relates to the technical field of two-way sealing butterfly valves, in particular to a condenser cut cylinder two-way sealing butterfly valve which comprises a valve body, a valve rod and a valve plate, a driving cavity is formed in the valve body, the valve rod is sleeved with a transmission piece, two sliding blocks are arranged in the driving cavity, and expansion rings are arranged below the two sliding blocks. A runner is arranged between the expansion ring and the sliding block on the valve body; a first sealing groove is formed in the valve plate, the transmission piece is driven through rotation of the valve rod, and the two sliding blocks are driven to slide through the transmission piece. The sliding block moves to drive fluid in the flow channel to flow, the expansion ring is driven to expand towards the first sealing groove of the valve plate, the expansion ring is tightly attached to the first sealing groove through deformation, and sealing of the valve body is achieved. Compared with the prior art, through the more compact structure and space layout, a sealing mechanism is simplified, and the requirements of an external transmission assembly and a complex adjusting mechanism are reduced, so that the overall size of the valve is effectively reduced, and the problem that side space is occupied is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of bidirectional sealing butterfly valves, in particular to a condenser cylinder cutting bidirectional sealing butterfly valve. Background Art

[0002] A butterfly valve, also known as a flap valve, is a valve used for switching low-pressure pipeline media. Its closing member (valve disc or valve plate) is disc-shaped and rotates around the valve axis to open and close. However, due to the limitations of the butterfly valve's valve plate structure, traditional butterfly valves can usually only seal under positive pressure, which affects the sealing performance. In addition, the valve plate is not rigid enough and cannot be effectively folded to reduce the pressure, resulting in the risk of leakage from the valve seat.

[0003] Chinese patent authorization announcement number CN115654194B discloses a bidirectional sealed butterfly valve and a method for using the same. The bidirectional sealed butterfly valve includes a valve body, and pressure relief mechanisms are provided at both ends of the valve body. A rotating sleeve is rotatably connected to the interior of the front end of the valve body through a bearing, and the interior of the rotating sleeve is rotatably connected to a transmission column through a bearing, and a connecting block is fixedly connected to the outside of the transmission column and the rotating sleeve. The first and second valve plates are fixedly connected to one end of the connecting block away from the transmission column and the rotating sleeve. The first and second worm gears are fixedly connected to the outside of the transmission column and the rotating sleeve, and a rubber sealing block is provided inside the valve body.

[0004] This patent effectively solves the problem that the valve plate in the traditional butterfly valve cannot be folded to reduce the pressure, which leads to valve seat leakage. At the same time, a pressure relief mechanism is designed, so that the valve can be quickly disassembled and installed, and has a pressure relief adjustment function. However, this design has certain limitations in practical applications: due to the complex structure of the valve and the large overall size, especially the external pressure relief mechanism, adjustment mechanism and transmission assembly, which occupy the space beside the valve body, resulting in certain restrictions on the installation environment of the valve. Summary of the invention

[0005] In view of the above problems, a condenser cylinder cutting bidirectional sealing butterfly valve is provided. The present invention drives the transmission member by rotating the valve stem, and drives the two sliders to slide through the transmission member. The movement of the slider drives the fluid in the flow channel to flow, and the movement of the fluid acts on the expansion ring, driving the expansion ring to expand toward the first sealing groove of the valve plate. The expansion ring is tightly fitted with the first sealing groove through deformation, thereby achieving sealing of the valve body. Compared with the prior art, the bidirectional sealing butterfly valve of the present invention simplifies the sealing mechanism through a more compact structure and spatial layout, reduces the need for external transmission components and complex adjustment mechanisms, thereby effectively reducing the overall volume of the valve and avoiding the problem of occupying side space.

[0006] In order to solve the problems of the prior art, the present invention provides a condenser cylinder cutting bidirectional sealing butterfly valve, comprising a valve body and a valve stem arranged on the valve body, the valve stem is provided with a valve plate fixedly connected thereto, the valve body is provided with a driving chamber, the valve stem is provided with a transmission member sleeved in the driving chamber, two sliders which can slide relative to each other along the axial direction of the valve body are provided in the driving chamber, and the two sliders are arranged on both sides of the transmission member in a mirror-symmetrical state; when the valve stem drives the valve plate to close the valve body, the transmission member rotates with the valve stem and drives the two sliders to slide relative to each other along the axial direction of the valve body; expansion rings are arranged on the valve body below the two sliders, and a flow channel is arranged on the valve body between the expansion ring and the slider; a first sealing groove corresponding to the two expansion rings is provided on the valve plate, and when the slider moves through the transmission member, the fluid in the flow channel is driven to move, thereby driving the expansion ring to expand toward the first sealing groove to form a seal with the first sealing groove.

[0007] Preferably, the transmission member is a frustum structure, the end faces at both ends of the transmission member are elliptical, and the two sliders are provided with inclined surfaces that match the side edges of the transmission member.

[0008] Preferably, an annular cavity connected to the flow channel is provided on the valve body, a driving plate capable of sliding along the axial direction of the valve body is provided in the annular cavity, a plurality of driving rods equidistantly surrounding the axis of the valve body are provided on the driving plate, the driving rods penetrate the side wall of the annular cavity close to the slider and slide with the side wall, the ends of the plurality of driving rods away from the driving plate are fixedly connected to the slider, and a first elastic member is provided between the plurality of driving rods and the outer wall of the annular cavity.

[0009] Preferably, the valve stem is provided with a plurality of slide grooves extending along its axial direction, and the plurality of slide grooves are arranged equidistantly around the axis of the valve stem, the transmission member is provided with a plurality of slide bars matching the slide grooves, a pressure plate is fixedly connected to the valve stem above the transmission member, an installation groove matching the pressure plate is provided in the drive cavity, and a second elastic member is provided between the pressure plate and the transmission member.

[0010] Preferably, a pressure relief chamber is further provided outside the driving chamber, and a partition is provided in the pressure relief chamber, the partition divides the pressure relief chamber into a first chamber and a second chamber, a plurality of first pressure relief holes are provided on the partition, and the plurality of first pressure relief holes are arranged above the two sliders in a mirror-symmetrical state, a pressure relief pipe connected to an external pipeline is provided on the first chamber, a plurality of second pressure relief holes are provided on both sides of the valve stem on the valve body, the plurality of second pressure relief holes are arranged equidistantly around the axis of the valve body, and elastic abutment joints are provided on the plurality of second pressure relief holes, and the second pressure relief holes are connected to the second chamber.

[0011] Preferably, a first rotating groove matching the valve stem is provided in the drive chamber above the mounting groove, a sealing plate is provided in the drive chamber between the first rotating groove and the pressure plate, a second rotating groove matching the valve stem is provided at the bottom of the valve body, and the valve stem passes through the sealing plate and is located between the first rotating groove and the second rotating groove.

[0012] Preferably, both sides of the valve plate are provided with inwardly recessed grooves, the grooves are in a conical structure, and sealing rings are provided in the two first sealing grooves.

[0013] Preferably, a worm wheel is sleeved on the top of the valve stem, and a worm in a horizontal state and capable of rotating is arranged beside the worm wheel, and the worm is meshingly connected with the worm wheel.

[0014] Preferably, a mounting plate fixedly connected to the driving cavity is provided on the outside of the driving cavity, a rotating driving motor is provided on the mounting plate, one end of the worm is drivingly connected to the output shaft of the rotating driving motor, and the other end of the worm is provided with a hand wheel, which is used to drive the worm to rotate.

[0015] Preferably, flanges are provided at both ends of the valve body, and the flanges are provided with a plurality of screw holes equidistantly surrounding the axis of the flanges.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When the valve body is closed by rotating the valve stem of the present invention, the valve stem drives the transmission member to rotate, thereby driving the two sliders to slide relative to each other along the axial direction of the valve body. The movement of the slider drives the fluid in the flow channel to flow, and the movement of the fluid acts on the expansion ring, driving the expansion ring to expand toward the first sealing groove of the valve plate. The expansion ring is tightly fitted with the first sealing groove through the deformation of the expansion ring, thereby achieving sealing of the valve body. The slider is driven by the transmission member to indirectly control the expansion and retraction of the expansion ring. The sealing response speed is fast and is suitable for frequent opening and closing conditions. In the condenser cylinder cutting operation, the valve needs to respond quickly to opening or closing. The dynamic sealing is achieved by driving the expansion ring by the slider, which can meet the needs of rapid switching. Compared with the prior art, the sealing mechanism is simplified through a more compact structure and spatial layout, and the need for external transmission components and complex adjustment mechanisms is reduced, thereby effectively reducing the overall volume of the valve and avoiding the problem of occupying side space.

[0017] 2. The present invention uses a symmetrical elliptical cone structure for the transmission member, so that when the transmission member rotates with the valve stem, the outer wall of the elliptical cone contacts and interacts with the inclined surface of the slider, driving the slider to slide along the axis of the valve body. Through the design of the inclined surface, the transmission member can drive the slider to move more smoothly, reducing the complex mechanical linkage parts, thereby simplifying the design and improving the movement accuracy. There is no need to equip the transmission member with an independent driving source, and it can drive the slider as the valve stem rotates, reducing the cost of the valve.

[0018] 3. The present invention provides a first chamber and a second chamber in the pressure relief chamber, and cooperates with the provision of a first pressure relief hole and a second pressure relief hole, so that the pressure in the valve body is effectively controlled, and the wear and damage of the valve body and related components are reduced, thereby reducing the maintenance frequency and maintenance costs. The long-term stable operation of the system helps to reduce the total cost. The above method enables the valve to flexibly adjust the pressure relief rate under different working environments and pressure conditions to adapt to the discharge requirements of various fluid media. The method is simple and efficient, and can automatically adjust the pressure without frequent inspections, reducing the need for external intervention, thereby making the maintenance and inspection of the equipment easier, saving time and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structure diagram of the condenser cut-cylinder bidirectional sealing butterfly valve Figure 1 .

[0020] Figure 2 This is a three-dimensional structure diagram of the condenser cut-cylinder bidirectional sealing butterfly valve Figure 2 .

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the condenser cut-cylinder bidirectional sealing butterfly valve.

[0022] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the condenser cut-cylinder bidirectional sealing butterfly valve.

[0023] Figure 5 yes Figure 3 Enlarged view of point A in the middle.

[0024] Figure 6 yes Figure 3 Enlarged view of point B in the middle.

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the worm wheel, worm transmission parts and two sliders in the condenser cylinder bidirectional sealing butterfly valve.

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the transmission parts and the slider in the condenser cylinder cutting bidirectional sealing butterfly valve.

[0027] Fig. 9 It is a three-dimensional structural schematic diagram of the valve stem and valve plate in the condenser cylinder cutting bidirectional sealing butterfly valve.

[0028] Fig.10 It is a schematic diagram of the three-dimensional structure of the valve body in the condenser cylinder cutting bidirectional sealing butterfly valve.

[0029] The numbers in the figure are: 1. Valve body; 11. Valve stem; 111. Valve plate; 1111. First sealing groove; 11111. Sealing ring; 1112. Groove; 112. Transmission member; 1121. Sliding bar; 1122. Second elastic member; 113. Sliding groove; 114. Press plate; 12. Driving chamber; 121. Sliding block; 1211. Inclined surface; 122. Mounting groove; 123. First rotating groove; 1231. Sealing plate; 124. Second rotating groove; 125. Worm wheel; 126. Worm; 1261 , rotary drive motor; 1262, hand wheel; 127, mounting plate; 13, flow channel; 131, expansion ring; 132, annular cavity; 1321, drive plate; 1322, drive rod; 13221, first elastic member; 14, pressure relief cavity; 141, partition; 142, first chamber; 1421, first pressure relief hole; 1422, pressure relief pipe; 143, second chamber; 1431, second pressure relief hole; 1432, elastic butt joint; 15, flange; 151, screw hole. DETAILED DESCRIPTION

[0030] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] like Figures 1 to 7 As shown: a condenser cylinder cutting bidirectional sealing butterfly valve comprises a valve body 1 and a valve stem 11 arranged on the valve body 1, a valve plate 111 fixedly connected thereto is arranged on the valve stem 11, a driving chamber 12 is arranged on the valve body 1, a transmission member 112 is sleeved in the driving chamber 12 on the valve stem 11, two sliders 121 that can slide relatively along the axial direction of the valve body 1 are arranged in the driving chamber 12, and the two sliders 121 are arranged on both sides of the transmission member 112 in a mirror-symmetrical state; when the valve stem 11 drives the valve plate 111 to close the valve body 1, the transmission member 112 moves along with the valve stem 11 The two sliders 121 are rotated and driven to slide relative to each other along the axial direction of the valve body 1; expansion rings 131 are provided on the valve body 1 below the two sliders 121, and a flow channel 13 is provided on the valve body 1 between the expansion rings 131 and the sliders 121; a first sealing groove 1111 corresponding to the two expansion rings 131 is provided on the valve plate 111, and when the slider 121 moves through the transmission member 112, the fluid in the flow channel 13 is driven to move, thereby driving the expansion ring 131 to expand toward the first sealing groove 1111 to form a seal with the first sealing groove 1111.

[0032] The two-way sealing butterfly valve drives the valve plate 111 to open or close the valve by the rotation of the valve stem 11. When the valve stem 11 rotates to close the valve body 1, the transmission member 112 is sleeved on the valve stem 11, so that it can rotate synchronously with the valve stem 11, and the rotation of the transmission member 112 drives the two sliders 121 in the driving chamber 12 to slide relative to each other along the axis direction of the valve body 1. The movement of the slider 121 drives the fluid in the flow channel 13 to flow, and the movement of the fluid acts on the expansion ring 131. Since the valve plate 111 closes the valve, the first sealing groove 1111 is connected to the expansion ring 131. At this time, the movement of the fluid drives the expansion ring 131 to expand toward the first sealing groove 1111 of the valve plate 111, and the expansion ring 131 is tightly fitted with the first sealing groove 1111 through the deformation of the expansion ring 131, thereby achieving sealing of the valve body 1.

[0033] When the valve is in the open state, the slider 121 will reset, the fluid in the flow channel 13 will flow back, and the expansion ring 131 will retract to the initial position, releasing the fit with the first sealing groove 1111, and the valve will be in a non-sealed state to ensure the normal passage of the fluid.

[0034] During the condenser cylinder cutting process, the steam or cooling water flow needs to be accurately cut off to prevent the working medium from backflowing or leaking. The expansion ring 131 is accurately expanded to the first sealing groove 1111 by the fluid pressure, ensuring that the valve can achieve reliable sealing under the condition of pressure changes on both sides, which is particularly suitable for high-pressure or vacuum systems that require zero leakage.

[0035] The symmetrically arranged slider 121, transmission member 112 and sealing structure ensure that the sealing action of the valve is smooth and uniform, while reducing the operating torque. The slider 121 is driven by the transmission member 112 to indirectly control the expansion and retraction action of the expansion ring 131. The sealing response speed is fast and suitable for frequent opening and closing conditions. In the condenser cylinder cutting operation, the valve needs to respond quickly to opening or closing. The expansion ring 131 is driven by the slider 121 to achieve dynamic sealing, which can meet the needs of rapid switching. The expansion ring 131 is in a retracted position when not in operation, which avoids deformation or fatigue caused by long-term pressure, and significantly improves the overall service life and sealing reliability of the valve.

[0036] Compared with the prior art, the valve body structure is more compact. By arranging the transmission member 112 and the slider 121 in the driving chamber 12, the sealing mechanism is simplified, and the need for external transmission components and complex adjustment mechanisms is reduced, thereby effectively reducing the overall volume of the valve and avoiding the problem of occupying side space. At the same time, it provides more efficient and stable bidirectional sealing performance, simplifies the installation and maintenance process, and improves the reliability and convenience of maintenance.

[0037] like Figures 3 to 8As shown, the transmission member 112 is a frustum structure, and the end faces of both ends of the transmission member are elliptical, and the two sliders 121 are provided with inclined surfaces 1211 that match the side edges of the transmission member 112 .

[0038] The transmission member 112 is a frustum structure, and the end faces of the transmission member are symmetrical elliptical cone structures, so that when the transmission member 112 rotates with the valve stem 11, the outer wall of the elliptical cone contacts and interacts with the inclined surface 1211 of the slider 121, driving the slider 121 to slide along the axis direction of the valve body 1. Since the transmission member 112 has a symmetrical structure, the slider 121 can move evenly and stably on both sides, thereby achieving precise control of the position of the slider 121 and ensuring smooth operation of the valve. The symmetrical structure of the transmission member 112 ensures uniform distribution of force, reduces wear or deviation caused by asymmetric force, and enhances the stability and reliability of the system. Through the design of the inclined surface 1211, the transmission member 112 can drive the slider 121 to move more smoothly, reducing the complex mechanical linkage part, thereby simplifying the design and improving the movement accuracy. The simple structure and efficient transmission method reduce the difficulty of system maintenance, and can quickly respond to the adjustment requirements of different working conditions during use, thereby improving the adaptability of the valve. There is no need to equip the transmission member 112 with an independent driving source, and the transmission member 112 can drive the slider 121 along with the rotation of the valve stem 11, thereby reducing the cost of the valve.

[0039] like Figures 3 to 10 As shown: the valve body 1 is provided with an annular cavity 132 connected with the flow channel 13, and a driving plate 1321 that can slide along the axial direction of the valve body 1 is provided in the annular cavity 132, and a plurality of driving rods 1322 equidistantly surrounding its axis are provided on the driving plate 1321, and the driving rods 1322 penetrate the side wall of the annular cavity 132 close to the slider 121 and slide with it, and the ends of the plurality of driving rods 1322 away from the driving plate 1321 are fixedly connected to the slider 121, and a first elastic member 13221 is provided between the plurality of driving rods 1322 and the outer wall of the annular cavity 132.

[0040] When the slider 121 moves, since the driving rod 1322 is fixedly connected to the slider 121, the movement of the slider 121 will drive the driving rod 1322 to slide along the axial direction of the valve body 1, thereby driving the movement of the driving plate 1321 in the annular cavity 132. At this time, the slider 121 will squeeze the first elastic member 13221, and the movement of the driving plate 1321 will cause the fluid to flow in the annular cavity 132, pushing the fluid to move in the flow channel 13, thereby causing the expansion ring 131 to expand and cooperate with the first sealing groove 1111 to form a seal.

[0041] The movement of the drive plate 1321 enables the expansion ring 131 to expand effectively and form a good seal with the first sealing groove 1111. This structure can effectively prevent leakage, improve the sealing performance of the valve, and ensure the sealing during the flow of fluid, and is particularly suitable for working environments that require high sealing. The first elastic member 13221 between the drive rod 1322 and the outer wall of the annular cavity 132 provides a buffering and supporting effect, effectively reducing the friction and deviation caused by the movement of the slider 121 and the drive plate 1321, maintaining the stability of the system, reducing mechanical loss and friction, and improving the overall operation stability. At the same time, due to the resetting of the slider 121, the slider 121 can always maintain contact with the transmission member 112.

[0042] The fixed connection between the driving rod 1322 and the slider 121 and the effective cooperation with the first elastic member 13221 make the coordinated work of key components such as the slider 121, the driving plate 1321 and the expansion ring 131 more reliable, reduce the possibility of misoperation, and thus improve the overall reliability of the system.

[0043] like Figures 3 to 9 As shown: the valve stem 11 is provided with a plurality of slide grooves 113 extending along its axial direction, and the plurality of slide grooves 113 are arranged equidistantly around the axis of the valve stem 11, and the transmission member 112 is provided with a plurality of slide bars 1121 matching the slide grooves 113, a pressure plate 114 is fixedly connected to the valve stem 11 above the transmission member 112, a mounting groove 122 matching the pressure plate 114 is provided in the drive chamber 12, and a second elastic member 1122 is provided between the pressure plate 114 and the transmission member 112.

[0044] The pressure plate 114 always keeps the transmission member 112 pressed downward by the second elastic member 1122, ensuring that the transmission member 112 is in a proper position on the valve stem 11; thereby ensuring that the slide bar 1121 and the slide groove 113 cooperate accurately, avoiding unstable transmission or failure caused by inaccurate position. When the valve stem 11 rotates, the transmission member 112 rotates with the valve stem 11 through the cooperation of the slide bar 1121 and the slide groove 113, thereby driving the movement of the slider 121 through the transmission member 112. The existence of the second elastic member 1122 avoids the stuck state of the transmission member 112 and prevents the transmission member 112 from being damaged when driving the slider 121.

[0045] The provision of the second elastic member 1122 effectively prevents the transmission member 112 from getting stuck. During operation, the elastic member can absorb and buffer the stress caused by improper matching of the slide bar 1121 and the slide groove 113 or external force impact, thereby preventing the transmission member 112 from getting stuck or damaged. This ensures the reliability and stability of the transmission system during long-term use. By preventing the jamming phenomenon, the second elastic member 1122 reduces the wear caused by friction and abnormal force, and extends the service life of the valve stem 11, the transmission member 112 and the slider 121. The long-term stable operation of the system is guaranteed, and the need for frequent maintenance due to jamming or damage is reduced. This design simplifies the maintenance procedures, reduces the frequency of equipment maintenance, and reduces the overall cost of equipment use.

[0046] In the valve system, the transmission member 112 drives the movement of the slider 121 through the slide bar 1121, and the second elastic member 1122 is used to prevent any possible overload. When the system encounters a large pressure or external impact, the second elastic member 1122 will deform appropriately and absorb the impact, avoiding the transmission system from malfunctioning due to stagnation, thereby improving the safety of the entire valve system.

[0047] like Figures 3 to 10 As shown: a pressure relief chamber 14 is also provided outside the driving chamber 12, and a partition 141 is provided in the pressure relief chamber 14, and the partition 141 divides the pressure relief chamber 14 into a first chamber 142 and a second chamber 143, and a plurality of first pressure relief holes 1421 are provided on the partition 141, and the plurality of first pressure relief holes 1421 are arranged above the two sliders 121 in a mirror-symmetrical state, and a pressure relief pipe 1422 connected to an external pipeline is provided on the first chamber 142, and a plurality of second pressure relief holes 1431 are provided on both sides of the valve stem 11 of the valve body 1, and the plurality of second pressure relief holes 1431 are arranged equidistantly around the axis of the valve body 1, and elastic abutment joints 1432 are provided on the plurality of second pressure relief holes 1431, and the second pressure relief holes 1431 are connected to the second chamber 143.

[0048] When the pressure in the valve body 1 increases, the pressure will push open the elastic abutment 1432, and the fluid will enter the second chamber 143. When the fluid in the second chamber 143 is gradually filled, the pressure will force the fluid to pass through the partition 141 and flow into the first chamber 142 through the first pressure relief hole 1421. The flow rate of the pressure relief process is controlled by these first pressure relief holes 1421, which can achieve precise control of the pressure relief flow rate of the fluid, avoid system shock caused by too fast discharge, ensure a smooth and orderly pressure relief process, thereby reducing the load and stress on the equipment and extending the service life of the valve.

[0049] Finally, the fluid is discharged to the external pipeline through the pressure relief pipe 1422 connected to the first chamber 142, thereby realizing the pressure relief function. The above method can effectively control the increase of pressure in the valve body 1, ensuring that the system will not be damaged due to excessive pressure. The setting of the pressure relief chamber 14 and the first pressure relief hole 1421 and the second pressure relief hole 1431 ensures that the pressure is gradually released, avoiding damage to the valve or pipeline caused by excessive pressure. The setting of the elastic abutment 1432 enables the pressure relief system to automatically respond to pressure changes. As the pressure in the valve body 1 changes, the elastic abutment 1432 can accurately adjust the amount of fluid entering the second chamber 143, thereby adjusting the pressure relief process according to the real-time pressure to maintain the stable operation of the system. Through the precise pressure relief mechanism, the pressure in the system is effectively controlled, the wear and damage of the valve body 1 and related components are reduced, thereby reducing the maintenance frequency and maintenance cost. The long-term stable operation of the system helps to reduce the total cost. The above method enables the valve to flexibly adjust the pressure relief rate under different working environments and pressure conditions to adapt to the discharge requirements of various fluid media. Whether under high pressure or low pressure conditions, the normal operation of the valve system can be guaranteed, which enhances the adaptability of the system. The method is simple and efficient, and can automatically adjust the pressure without frequent inspections, reducing the need for external intervention, making the maintenance and repair of the equipment easier, saving time and labor costs.

[0050] like Figure 3 , Figure 4 , Fig. 9 and Fig.10 As shown: a first rotating groove 123 matching the valve stem 11 is arranged above the mounting groove 122 in the driving chamber 12, a sealing plate 1231 is arranged between the first rotating groove 123 and the pressure plate 114 in the driving chamber 12, a second rotating groove 124 matching the valve stem 11 is arranged at the bottom of the valve body 1, and the valve stem 11 passes through the sealing plate 1231 and is located between the first rotating groove 123 and the second rotating groove 124.

[0051] By providing a sealing plate 1231 and placing it between the first rotating groove 123 and the pressure plate 114, fluid leakage can be effectively prevented, thereby enhancing the sealing of the valve body 1. The design of the sealing plate 1231 ensures the effective isolation of the fluid inside the valve body 1, prevents cross-contamination or leakage between different cavities, and improves the overall sealing effect of the system. The valve stem 11 passes through the sealing plate 1231 and is located between the first rotating groove 123 and the second rotating groove 124, ensuring the stability and accurate movement path of the valve stem 11. The presence of the first rotating groove 123 and the second rotating groove 124 provides a precise rotation guide, ensuring that the valve stem 11 moves along the correct path during the rotation process, avoiding deviation or instability in the movement, and avoiding the valve stem 11 from being stuck or damaged due to excessive friction or improper movement. This can improve the accuracy of valve operation and ensure smooth opening and closing of the valve.

[0052] By reducing the friction of the valve stem 11 and improving the sealing performance, the frequency of maintenance and replacement caused by leakage, wear or sticking of the valve stem 11 is reduced. In long-term use, the maintenance cost can be significantly reduced and the economic benefits of the equipment can be improved. The valve is not only suitable for a variety of fluid media, but also can maintain stable performance under different working conditions. The valve has strong adaptability regardless of high temperature, high pressure or corrosive media environment.

[0053] like Figure 3 , Figure 4 , Figure 6 , Figure 7 and Fig. 9 As shown, inwardly recessed grooves 1112 are provided on both sides of the valve plate 111 , the grooves 1112 are in a conical structure, and sealing rings 11111 are provided in the two first sealing grooves 1111 .

[0054] The arrangement of the groove 1112 makes the force-bearing area of ​​the valve plate 111 more dispersed, avoiding excessive pressure concentrated in a small area, thereby reducing the wear of the sealing surface and the sealing ring 11111. By reducing local excessive wear, the service life of the valve plate 111 can be extended. The valve plate 111 is made more stable during the opening and closing process, reducing vibration or jamming caused by uneven force. Stable operation can improve the reliability of the valve in long-term use and avoid problems such as oil leakage and air leakage caused by uneven sealing.

[0055] By arranging a sealing ring 11111 in the first sealing groove 1111, not only the sealing effect can be further enhanced, but also the fault tolerance of the valve can be enhanced. For example, when the expansion ring 131 is damaged, the sealing ring 11111 can still provide a certain sealing effect.

[0056] like Figure 3 , Figure 4 and Figure 7As shown, a worm wheel 125 is sleeved on the top of the valve stem 11 , and a worm 126 which is horizontal and rotatable is arranged beside the worm wheel 125 , and the worm 126 is meshedly connected with the worm wheel 125 .

[0057] The engagement of the worm wheel 125 and the worm 126 enables the rotation of the valve stem 11 to be transmitted smoothly, avoiding vibration or irregular rotation that may occur in traditional gear transmission. This smooth transmission method improves the stability of valve operation, especially in a working environment with large flow or high pressure, and can ensure that the valve movement is more accurate and stable. The worm 126 transmission system has a high reduction ratio, which can effectively amplify the torque of the worm wheel 125, so that the operator can drive the valve with a smaller torque, which is particularly suitable for valves that require a larger switching force. This transmission method improves the operational flexibility of the valve and reduces the difficulty of operation. The horizontal arrangement of the worm 126 makes the transmission system more compact in space, helps to reduce the volume of the overall structure of the valve, and is suitable for use in an environment with limited space. This compact structure helps the valve to be more flexibly adapted to systems of different sizes and installation requirements. And the worm 126 transmission has a self-locking characteristic, that is, in the absence of external force, there will be no reverse movement between the tooth surface of the worm 126 and the worm wheel 125. This self-locking feature reduces friction and wear of the valve over long periods of use, improves system durability, and reduces maintenance frequency and replacement costs.

[0058] The worm 126 and the worm wheel 125 are usually made of corrosion-resistant materials and can adapt to harsh working environments, especially operations under chemical corrosion or high temperature and high humidity conditions, ensuring that the valve can operate stably under various harsh conditions and extending the service life of the system.

[0059] like Figures 1 to 4 and Figure 7 As shown: a mounting plate 127 fixedly connected to the driving chamber 12 is arranged on the outer side of the driving chamber 12, a rotating driving motor 1261 is arranged on the mounting plate 127, one end of the worm 126 is drivingly connected to the output shaft of the rotating driving motor 1261, and a hand-cranked wheel 1262 is arranged on the other end of the worm 126, and the hand-cranked wheel 1262 is used to drive the worm 126 to rotate.

[0060] By setting the combination of the rotary drive motor 1261 and the hand wheel 1262, two driving modes, automatic and manual, are provided. The user can choose electric drive to achieve fast and accurate operation according to needs, or use the hand wheel 1262 for manual control, especially in the event of power failure or emergency, to ensure the flexibility and reliability of valve operation.

[0061] Through the setting of the hand wheel 1262, the system can still complete the opening and closing of the valve through manual operation even in the case of electric drive failure or power outage, ensuring that the normal function of the valve is not affected in an emergency. This emergency operation function greatly improves the safety of the system and avoids system shutdown due to power outage.

[0062] The combination of the worm 126 transmission and the rotary drive motor 1261 provides high-precision control. The motor drive enables the valve to be adjusted accurately by automation, while the hand wheel 1262 provides the operator with the ability to perform precise manual control in emergency situations. Whether it is automatic control or manual control, the accuracy and stability of the valve can be guaranteed in various working environments.

[0063] Combining the rotary drive motor 1261 and the hand wheel 1262 in the same transmission system not only saves space but also provides a more convenient operation method. The design of the mounting plate 127 helps to integrate all the drive components together, making the entire system more compact and easy to operate and maintain. Due to the combination of electric and manual drive modes, not only can the valve operate efficiently in an automated state, but also frequent manual intervention due to system failures is avoided, thereby reducing the operation and maintenance costs of the system and improving economic benefits.

[0064] like Figures 1 to 4 As shown: flanges 15 are provided at both ends of the valve body 1, and the flange 15 is provided with a plurality of screw holes 151 equidistantly surrounding the axis of the flange 15.

[0065] By providing flanges 15 at both ends of the valve body 1 and equipping them with a plurality of equidistant screw holes 151, the valve body 1 can be stably installed. The equidistant distribution of the screw holes 151 ensures uniform force between the valve body 1 and the connecting parts, thereby avoiding deformation or damage caused by uneven force and improving the reliability and durability of the equipment. The design of the flange 15 makes the installation and disassembly of the valve body 1 more convenient. The uniform distribution of the screw holes 151 provides a reliable fit for bolt fixation, which can be quickly docked during installation, improves construction efficiency, and reduces sealing problems caused by improper installation. During disassembly, the flange 15 is also easy to operate and shortens maintenance time. Through the standardized design of the flange 15, the manufacturing and inventory costs of accessories can be effectively reduced, and the compatibility of different valves and pipelines can be ensured, which improves the versatility of the equipment, reduces the cost of production and maintenance, and improves the overall economic benefits.

[0066] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A condenser cylinder cutting bidirectional sealing butterfly valve, comprising a valve body (1) and a valve stem (11) arranged on the valve body (1), wherein the valve stem (11) is provided with a valve plate (111) fixedly connected thereto, and characterized in that: The valve body (1) is provided with a driving chamber (12), the valve stem (11) is sleeved with a transmission member (112) located in the driving chamber (12), and the driving chamber (12) is provided with two sliders (121) that can slide relatively along the axis direction of the valve body (1), and the two sliders (121) are arranged on both sides of the transmission member (112) in a mirror-symmetrical state; When the valve stem (11) drives the valve plate (111) to close the valve body (1), the transmission member (112) rotates along with the valve stem (11) and drives the two sliders (121) to slide relative to each other along the axis direction of the valve body (1); An expansion ring (131) is provided on the valve body (1) below the two sliders (121), and a flow channel (13) is provided on the valve body (1) between the expansion ring (131) and the sliders (121); The valve plate (111) is provided with first sealing grooves (1111) corresponding to the two expansion rings (131). When the slider (121) moves via the transmission member (112), the fluid in the flow channel (13) is driven to move, thereby driving the expansion ring (131) to expand toward the first sealing groove (1111) to form a seal with the first sealing groove (1111).

2. The condenser cylinder cutting bidirectional sealing butterfly valve according to claim 1 is characterized in that: The transmission member (112) is a frustum structure, and the end faces at both ends of the transmission member (112) are both elliptical, and the two sliders (121) are both provided with inclined surfaces (1211) that match the side edges of the transmission member (112).

3. The condenser cylinder cutting bidirectional sealing butterfly valve according to claim 2 is characterized in that: The valve body (1) is provided with an annular cavity (132) which is in communication with the flow channel (13); a driving plate (1321) which can slide along the axial direction of the valve body (1) is provided in the annular cavity (132); a plurality of driving rods (1322) which are equidistantly arranged around the axis of the valve body (1) are provided on the driving plate (1321); the driving rods (1322) penetrate the side wall of the annular cavity (132) which is close to the slider (121) and are slidably engaged with the side wall; ends of the plurality of driving rods (1322) which are away from the driving plate (1321) are fixedly connected to the slider (121); and a first elastic member (13221) is provided between the plurality of driving rods (1322) and the outer wall of the annular cavity (132).

4. The condenser cylinder cutting bidirectional sealing butterfly valve according to claim 2 is characterized in that: The valve stem (11) is provided with a plurality of slide grooves (113) extending along the axial direction thereof, the plurality of slide grooves (113) are arranged around the axial line of the valve stem (11) at equal intervals, the transmission member (112) is provided with a plurality of slide bars (1121) matching the slide grooves (113), a pressure plate (114) is fixedly connected to the valve stem (11) above the transmission member (112), a mounting groove (122) matching the pressure plate (114) is provided in the drive chamber (12), and a second elastic member (1122) is provided between the pressure plate (114) and the transmission member (112).

5. The condenser cylinder cutting bidirectional sealing butterfly valve according to claim 1, characterized in that: A pressure relief chamber (14) is also provided outside the driving chamber (12). A partition (141) is provided inside the pressure relief chamber (14). The partition (141) divides the pressure relief chamber (14) into a first chamber (142) and a second chamber (143). A plurality of first pressure relief holes (1421) are provided on the partition (141). The plurality of first pressure relief holes (1421) are arranged above the two sliders (121) in a mirror-symmetrical state. A pressure relief pipe (1422) connected to an external pipeline is provided on the first chamber (142). A plurality of second pressure relief holes (1431) are provided on both sides of the valve stem (11) on the valve body (1). The plurality of second pressure relief holes (1431) are arranged equidistantly around the axis of the valve body (1). The plurality of second pressure relief holes (1431) are each provided with an elastic abutment joint (1432). The second pressure relief holes (1431) are connected to the second chamber (143).

6. The condenser cylinder cutting bidirectional sealing butterfly valve according to claim 4 is characterized in that: A first rotating groove (123) matching the valve stem (11) is provided above the mounting groove (122) in the drive chamber (12); a sealing plate (1231) is provided between the first rotating groove (123) and the pressure plate (114) in the drive chamber (12); a second rotating groove (124) matching the valve stem (11) is provided at the bottom of the valve body (1); the valve stem (11) passes through the sealing plate (1231) and is located between the first rotating groove (123) and the second rotating groove (124).

7. The condenser cylinder cutting bidirectional sealing butterfly valve according to claim 1, characterized in that: Inwardly recessed grooves (1112) are provided on both sides of the valve plate (111), the grooves (1112) are in a conical structure, and sealing rings (11111) are provided in the two first sealing grooves (1111).

8. The condenser cylinder cutting bidirectional sealing butterfly valve according to claim 1, characterized in that: A worm wheel (125) is sleeved on the top of the valve stem (11), and a worm (126) which is in a horizontal state and can rotate is arranged on the side of the worm wheel (125), and the worm (126) is meshingly connected with the worm wheel (125).

9. The condenser cylinder cutting bidirectional sealing butterfly valve according to claim 8, characterized in that: A mounting plate (127) fixedly connected to the driving chamber (12) is arranged outside the driving chamber (12); a rotary driving motor (1261) is arranged on the mounting plate (127); one end of the worm (126) is drivingly connected to an output shaft of the rotary driving motor (1261); and a hand-cranked wheel (1262) is arranged at the other end of the worm (126); the hand-cranked wheel (1262) is used to drive the worm (126) to rotate.

10. The condenser cylinder cutting bidirectional sealing butterfly valve according to claim 1, characterized in that: Flanges (15) are provided at both ends of the valve body (1), and the flanges (15) are provided with a plurality of screw holes (151) equidistantly surrounding the axis of the flanges (15).

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