A dual mode valve structure

Abstract

The application relates to the technical field of valves, in particular to a dual-mode valve structure; the valve structure comprises a pipeline main body, a first valve assembly, three groups of second valve assemblies, an outlet flange and an inlet flange, the first valve assembly and the three groups of second valve assemblies are arranged on the pipeline main body; the first valve assembly comprises a first valve shell, a first valve core, two first bearings, two first sealing members, a foreign matter crushing unit and a first valve rod, the first valve shell is connected with the pipeline main body, the first valve core is rotationally arranged in the first valve shell and located between the two first sealing members, the first valve rod is connected with the first valve core, the first valve core is provided with a plurality of filtering holes, the foreign matter crushing unit is connected with the first valve shell and located below the first valve shell, through the arrangement of the above structure, the filtering mode and the free flow mode can be flexibly switched according to the medium working condition, the switching process is stable and free of impact, and the foreign matter automatic crushing function is achieved.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and in particular to a dual-mode valve structure. Background Technology

[0002] In industrial fields such as chemical production and fluid transportation, valves, as core components controlling the flow of media, directly affect the operating efficiency, safety, and stability of the entire system. With the diversification and complexity of industrial production conditions, higher demands are placed on the functional adaptability of valves. Currently, valves widely used in the industrial field are mainly divided into two categories: ordinary flow valves and filter valves. Ordinary flow valves only have the function of controlling the flow of media and cannot handle particulate matter or impurities contained in the media. If there are many impurities in the media, it can easily lead to problems such as wear on subsequent equipment and pipeline blockage. Filter valves, on the other hand, achieve impurity interception through the filter structure built into the valve core. However, under conditions of good media flow and very low particulate matter content, the filter structure increases the flow resistance of the media, reduces the conveying efficiency, and after long-term use, impurities easily accumulate on the surface of the filter components, requiring frequent disassembly and cleaning, which affects the continuity of production.

[0003] In existing technologies, some valves attempt to integrate filtration functions, but they generally suffer from fixed structures and limited functionality, making it impossible to flexibly switch operating modes according to changes in media conditions. In addition, existing valves with filtration functions are prone to water hammer effects due to sudden changes in media pressure when switching on and off states, causing impact damage to the valve body and pipelines. At the same time, they lack an effective mechanism for intercepting impurities, and the accumulation of impurities can easily lead to reduced filtration efficiency, valve core jamming, and other malfunctions, seriously affecting the service life of the valve and the stability of system operation.

[0004] In conclusion, it is essential to propose a dual-mode valve structure that can flexibly switch between filtration and free flow modes according to the working conditions of the medium, with a smooth and shock-free switching process and automatic impurity crushing function. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-mode valve structure that can flexibly switch between filtration mode and free flow mode according to the working conditions of the medium, with a smooth and shock-free switching process and an automatic impurity crushing function.

[0006] To achieve the above objectives, the present invention employs a dual-mode valve structure, comprising a pipeline body, a first valve assembly, three sets of second valve assemblies, an outlet flange, and an inlet flange. The outlet flange and the inlet flange are respectively connected to the pipeline body, and the first valve assembly and the three sets of second valve assemblies are respectively disposed on the pipeline body.

[0007] The first valve assembly includes a first valve housing, a first valve core, two first bearings, two first seals, an impurity agitation unit, and a first valve stem. The first valve housing is connected to the pipeline body. Both first seals are disposed within the first valve housing. The first valve core is rotatably disposed within the first valve housing and located between the two first seals. The first valve stem is connected to the first valve core and located above the first valve core. Both first bearings are fixedly disposed within the first valve housing and are also sleeved on the outer wall of the first valve stem. The first valve core has multiple filter holes. The impurity agitation unit is connected to the first valve housing and located below the first valve housing.

[0008] The impurity crushing unit includes a connecting shell, a hollow funnel, a first auger, a second auger, a third auger, two limiting blocks, and a crushing shaft. The connecting shell is connected to and located below the first valve shell. Both limiting blocks are disposed within the connecting shell, and each limiting block has multiple through holes. The crushing shaft is movably connected to and passes through both limiting blocks. The first auger is fixedly connected to the crushing shaft and is located above one of the limiting blocks. The third auger is fixedly connected to the crushing shaft and is located below the other limiting block. The hollow funnel is fixedly connected to and located above the crushing shaft. The hollow funnel is also rotatably connected to and passes through the first valve core.

[0009] The impurity crushing unit further includes a cover plate and a sealing ring. The cover plate is fixedly connected to the connecting housing and is located below the connecting housing. The sealing ring is disposed between the cover plate and the connecting housing.

[0010] The second valve assembly includes a second valve housing, a second valve core, two second bearings, two second seals, and a second valve stem. The second valve housing is connected to the main pipe body. Both second seals are disposed within the second valve housing. The second valve core is rotatably disposed within the second valve housing and located between the two second seals. The second valve stem is connected to the second valve core and located above the second valve core. Both second bearings are fixedly disposed within the second valve housing and are also sleeved on the outer wall of the second valve stem.

[0011] The dual-mode valve structure further includes a drive assembly located above the main body of the pipeline, which is connected to the first valve stem and three second valve stems.

[0012] The drive assembly includes an active drive unit, a first transmission unit, and a second transmission unit. The active drive unit, the first transmission unit, and the second transmission unit are all located above the main body of the pipe. The active drive unit is connected to the first valve stem, the first transmission unit is connected to one of the second valve stems, and the second transmission unit is connected to the other two second valve stems. The first transmission unit and the second transmission unit are respectively connected to the active drive unit.

[0013] The active drive unit includes a motor frame, a drive motor, a first bevel gear, a second bevel gear, two traction frames, a drive sleeve, two first gears, a second gear, a first support frame, a first transmission shaft, a third gear, and a fourth gear. The motor frame is fixedly connected to the first valve housing and located on the outer wall of the first valve housing. The drive motor is fixedly mounted above the motor frame. Both first gears are connected to the output end of the drive motor. Both traction frames are fixedly mounted on the outer wall of the drive motor. The drive sleeve is movably mounted inside the two traction frames. The second gear and the first bevel gear are both fixedly mounted on the outer wall of the drive sleeve. The second gear meshes with the corresponding first gear. The first support frame is fixedly connected to the motor frame. The first transmission shaft is movably connected to the first support frame. The second bevel gear is fixedly connected to the first transmission shaft and also meshes with the first bevel gear. The third gear is fixedly mounted on the outer wall of the first transmission shaft. The fourth gear is fixedly connected to the first valve stem and meshes with the third gear.

[0014] The first transmission unit includes a second support frame, a second transmission shaft, a third bevel gear, a fourth bevel gear, two transmission belts, and two fifth gears. The second support frame is fixedly connected to the second valve housing and is located on the outer wall of the second valve housing. The second transmission shaft is movably disposed within the second support frame. The third bevel gear is fixedly sleeved on the outer wall of the second transmission shaft. The fourth bevel gear is fixedly connected to the second valve stem and meshes with the third gear. Both fifth gears are fixedly sleeved on the outer wall of the second transmission shaft. Each transmission belt meshes with the corresponding fifth gear and the first gear, respectively.

[0015] The second transmission unit includes a screw, two connectors, two racks, two sixth gears, a fixed frame, and two sets of traction units. The screw passes through the drive sleeve and is threaded into it. The two connectors are fixedly connected to the screw. Each connector has a rack fixedly mounted at its end. Each sixth gear is fixedly connected to the corresponding second valve stem and meshes with the corresponding rack. The fixed frame is fixedly connected to the motor frame. Both sets of traction units are fixedly mounted on the motor frame and connected to the corresponding racks.

[0016] The traction unit includes a movable frame, two guide rods, and two fixed sleeves. The movable frame is fixedly connected to the fixed frame, and both fixed sleeves are fixedly connected to the rack. One end of each guide rod is movably connected to the movable frame, and the other end of each guide rod is fixedly connected to the corresponding fixed sleeve.

[0017] This invention discloses a dual-mode valve structure, wherein the first valve assembly is a central valve assembly; the three sets of second valve assemblies include a front valve assembly, a rear valve assembly, and a main channel valve assembly, corresponding to the pre-stage, post-stage, and main flow channel of the filtration channel, respectively. The first valve assembly serves as the core filtration unit, intercepting impurities in the medium through multiple filter holes on the first valve core. Two first seals are located on both sides of the first valve core, effectively preventing leakage of the medium from the gap between the valve core and the housing, ensuring valve sealing performance. Two first bearings are sleeved on the outer wall of the first valve stem, reducing frictional resistance during valve stem rotation, making valve core rotation smoother, and thus improving the flexibility and stability of valve opening and closing. The impurity crushing unit is located below the first valve housing, crushing the filtered impurities to prevent impurity accumulation and clogging of the filter holes, ensuring smooth medium flow and realizing an integrated function of "filtration + impurity treatment". Through the above methods, the filtration mode and free flow mode can be flexibly switched according to the medium conditions, with a smooth and shock-free switching process and automatic impurity crushing function. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0020] Figure 2 This is a structural cross-sectional view of Embodiment 1 of the present invention.

[0021] Figure 3 This is a partial structural schematic diagram of Embodiment 1 of the present invention.

[0022] Figure 4 This is a partial structural side view of Embodiment 1 of the present invention.

[0023] Figure 5 This is a partial structural cross-sectional view of Embodiment 1 of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0025] Figure 7 This is a structural cross-sectional view of Embodiment 2 of the present invention.

[0026] Figure 8 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0027] 101-Pipe body, 102-First valve body, 103-First valve core, 104-First bearing, 105-First seal, 106-Connecting housing, 107-Hollow funnel, 108-First secondary auger, 109-Second secondary auger, 110-Third secondary auger, 111-Restriction block, 112-Crushing shaft, 113-Cover plate, 114-Sealing ring, 115-First valve stem, 116-Second valve body, 117-Second valve core, 118-Second bearing, 119-Second seal, 120-Second valve stem, 121-Outlet flange, 122-Inlet flange, 123-Motor frame, 124-Drive motor, 125- 126-Second bevel gear, 127-Traction frame, 128-Drive sleeve, 129-First gear, 130-Second gear, 131-First support frame, 132-First drive shaft, 133-Third gear, 134-Fourth gear, 135-Second support frame, 136-Second drive shaft, 137-Fourth bevel gear, 138-Drive belt, 139-Fifth gear, 140-Screw, 141-Connector, 142-Rack, 143-Sixth gear, 144-Fixed frame, 145-Modible frame, 146-Guide rod, 147-Fixed sleeve, 148-Filter hole, 149-Through hole, 150-Third bevel gear. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] Example 1:

[0030] Please see Figures 1-5 The present invention provides a dual-mode valve structure, including a pipeline body 101, a first valve assembly, three sets of second valve assemblies, an outlet flange 121 and an inlet flange 122, wherein the outlet flange 121 and the inlet flange 122 are respectively connected to the pipeline body 101, and the first valve assembly and the three sets of second valve assemblies are respectively disposed on the pipeline body 101.

[0031] The first valve assembly includes a first valve housing 102, a first valve core 103, two first bearings 104, two first seals 105, an impurity crushing unit, and a first valve stem 115. The first valve housing 102 is connected to the pipeline body 101. The two first seals 105 are disposed within the first valve housing 102. The first valve core 103 is rotatably disposed within the first valve housing 102 and located between the two first seals 105. The first valve stem 115 is connected to the first valve core 103 and located above the first valve core 103. The two first bearings 104 are fixedly disposed within the first valve housing 102 and are also sleeved on the outer wall of the first valve stem 115. The first valve core 103 has multiple filter holes 148. The impurity crushing unit is connected to the first valve housing 102 and located below the first valve housing 102.

[0032] In this embodiment, the first valve assembly is a central valve assembly; the three sets of second valve assemblies include a front valve assembly, a rear valve assembly, and a main channel valve assembly, corresponding to the front, rear, and main flow channels of the filtration channel, respectively. The first valve assembly, as the core filtration unit, intercepts impurities in the medium through multiple filter holes 148 on the first valve core 103. Two first seals 105 are located on both sides of the first valve core 103, effectively preventing leakage of the medium from the gap between the valve core and the housing, ensuring the valve's sealing performance. Two first bearings 104 are sleeved on the outer wall of the first valve stem 115, reducing the frictional resistance when the first valve stem 115 rotates, making the valve core rotate more smoothly, thereby improving the flexibility and stability of valve opening and closing. The impurity crushing unit is located below the first valve housing 102, which can crush the impurities intercepted by filtration, preventing impurities from accumulating and causing blockage of the filter holes 148, ensuring smooth medium flow, and realizing the integrated function of "filtration + impurity treatment". Through the above method, the effect of being able to flexibly switch between filtration mode and free flow mode according to the medium conditions is achieved, with a smooth and shock-free switching process and automatic impurity crushing function.

[0033] Further, the impurity crushing unit includes a connecting housing 106, a hollow funnel 107, a first auger 108, a second auger 109, a third auger 110, two limiting blocks 111, and a crushing shaft 112. The connecting housing 106 is connected to the first valve housing 102 and is located below the first valve housing 102. Both limiting blocks 111 are disposed within the connecting housing 106, and each limiting block 111 has multiple through holes 149. The crushing shaft 112 is connected to both limiting blocks 111. The first heavy auger 108 is fixedly connected to the grinding shaft 112 and located above one of the limiting blocks 111. The third heavy auger 110 is fixedly connected to the grinding shaft 112 and located below the other limiting block 111. The hollow funnel 107 is fixedly connected to the grinding shaft 112 and located above the grinding shaft 112. The hollow funnel 107 is also rotatably connected to the first valve core 103 and passes through the first valve core 103.

[0034] In this embodiment, the hollow funnel 107 passes through and is fixedly connected to the first valve core 103. When the first valve core 103 rotates, it can synchronously drive the crushing shaft 112 and the auger to rotate, realizing synchronous power transmission without the need for an additional drive source. The first auger 108, the second auger 109, and the third auger 110 are distributed along the axial direction of the crushing shaft 112, forming a three-stage crushing structure, which can crush impurities of different sizes in layers, resulting in a more thorough crushing effect and avoiding the residue of large impurities. The two limiting blocks 111 provide support for the crushing shaft 112 on the one hand, ensuring its rotational stability, and on the other hand, allow the medium to flow through their own through holes 149, while limiting the movement range of impurities, so that the impurities are concentrated in the area of ​​action of the auger, thereby improving the crushing efficiency.

[0035] Furthermore, the impurity crushing unit also includes a cover plate 113 and a sealing ring 114. The cover plate 113 is fixedly connected to the connecting housing 106 and is located below the connecting housing 106. The sealing ring 114 is disposed between the cover plate 113 and the connecting housing 106.

[0036] In this embodiment, the cover plate 113 is fixedly connected to the connecting housing 106 to form a closed impurity containing space. The crushed impurities can be deposited at the bottom of the connecting housing 106. The impurities can be cleaned by periodically disassembling the cover plate 113, making maintenance convenient. The sealing ring 114 is disposed between the cover plate 113 and the connecting housing 106, which can enhance the sealing of the connection between the two, prevent the medium from leaking from the gap, and at the same time prevent external impurities from entering the connecting housing 106 and affecting the normal operation of the auger, thus ensuring the working stability of the impurity crushing unit.

[0037] Furthermore, the second valve assembly includes a second valve housing 116, a second valve core 117, two second bearings 118, two second seals 119, and a second valve stem 120. The second valve housing 116 is connected to the pipeline body 101. The two second seals 119 are both disposed within the second valve housing 116. The second valve core 117 is rotatably disposed within the second valve housing 116 and located between the two second seals 119. The second valve stem 120 is connected to the second valve core 117 and located above the second valve core 117. The two second bearings 118 are both fixedly disposed within the second valve housing 116 and are also sleeved on the outer wall of the second valve stem 120.

[0038] In this embodiment, the three sets of second valve assemblies correspond to the pre-stage, post-stage, and main channel of the filter channel, respectively. The three sets of second valve assemblies are the pre-valve assembly, post-valve assembly, and main channel valve assembly, which cooperate with the first valve assembly to achieve dual-mode switching. Their structure is consistent with the basic structure of the first valve assembly. The two second seals 119 ensure sealing performance, and the two second bearings 118 reduce the rotational resistance of the valve stem to ensure flexible valve core switching. The second valve core 117 is driven to rotate by the second valve stem 120, which can realize the on / off control of the corresponding channel, providing a structural basis for dual-mode switching.

[0039] Furthermore, the dual-mode valve structure also includes a drive assembly located above the pipe body 101, and the drive assembly is connected to the first valve stem 115 and the three second valve stems 120 respectively.

[0040] In this embodiment, the drive assembly serves as a unified power source, simultaneously connecting the first valve stem 115 and the three second valve stems 120. This enables synchronous driving of multiple valve stems, eliminating the need for a separate drive device for each valve, thus simplifying the overall structure and reducing equipment costs. Through the power transmission of the drive assembly, the rotation angle of each valve core can be precisely controlled, enabling rapid switching between filtration mode and free flow mode, thereby improving operational convenience and switching efficiency.

[0041] Furthermore, the drive assembly includes an active drive unit, a first transmission unit, and a second transmission unit. The active drive unit, the first transmission unit, and the second transmission unit are all located above the pipe body 101. The active drive unit is connected to the first valve stem 115. The first transmission unit is connected to one of the second valve stems 120. The second transmission unit is connected to the other two second valve stems 120. The first transmission unit and the second transmission unit are respectively connected to the active drive unit.

[0042] In this embodiment, the drive assembly adopts a "active drive + branch transmission" structural design. The active drive unit provides the core power, and the first transmission unit and the second transmission unit are respectively responsible for the power transmission of valves in different channels, realizing independent control and collaborative work of multiple channels. This structural layout is reasonable, and each transmission unit has a clear division of labor, which not only ensures the stability and accuracy of power transmission, but also facilitates subsequent maintenance and repair. At the same time, all units are located above the main body of the pipeline 101, avoiding direct contact with the medium and extending the service life of the drive assembly.

[0043] Further, the active drive unit includes a motor frame 123, a drive motor 124, a first bevel gear 125, a second bevel gear 126, two traction frames 127, a drive sleeve 128, two first gears 129, a second gear 130, a first support frame 131, a first transmission shaft 132, a third gear 133, and a fourth gear 134. The motor frame 123 is fixedly connected to the first valve housing 102 and located on the outer side wall of the first valve housing 102. The drive motor 124 is fixedly mounted above the motor frame 123. Both first gears 129 are connected to the output end of the drive motor 124. Both traction frames 127 are fixedly mounted on the outer side wall of the drive motor 124. The drive sleeve 128 is movable. The second gear 130 and the first bevel gear 125 are both fixedly sleeved 147 on the outer wall of the drive sleeve 128, and the second gear 130 meshes with the corresponding first gear 129. The first support frame 131 is fixedly connected to the motor frame 123. The first transmission shaft 132 is movably connected to the first support frame 131. The second bevel gear 126 is fixedly connected to the first transmission shaft 132 and also meshes with the first bevel gear 125. The third gear 133 is fixedly sleeved 147 on the outer wall of the first transmission shaft 132. The fourth gear 134 is fixedly connected to the first valve stem 115 and meshes with the third gear 133.

[0044] In this embodiment, the motor frame 123 provides stable support for the drive motor 124, ensuring its stability during operation; the two first gears 129 are symmetrically arranged at the output end of the drive motor 124, meshing with the second gear 130 on the drive sleeve 128 to achieve smooth power transmission and improve the load-bearing capacity of the transmission structure; the traction frame 127 provides movable support for the drive sleeve 128, ensuring that the drive sleeve 128 can both rotate and move axially to meet different transmission requirements; the power direction is changed by 90° through the meshing of the first bevel gear 125 and the second bevel gear 126, and then the power is transmitted to the first valve stem 115 through the meshing of the third gear 133 and the fourth gear 134. The transmission path is clear, the power loss is small, and the first valve core 103 can be accurately driven to rotate to achieve the on / off control of the filter channel.

[0045] Further, the first transmission unit includes a second support frame 135, a second transmission shaft 136, a third bevel gear 150, a fourth bevel gear 137, two transmission belts 138, and two fifth gears 139. The second support frame 135 is fixedly connected to the second valve housing 116 and is located on the outer wall of the second valve housing 116. The second transmission shaft 136 is movably disposed within the second support frame 135. The third bevel gear 150 is fixedly sleeved 147 on the outer wall of the second transmission shaft 136. The fourth bevel gear 137 is fixedly connected to the second valve stem 120 and meshes with the third gear 133. Both fifth gears 139 are fixedly sleeved 147 on the outer wall of the second transmission shaft 136. Each transmission belt 138 meshes with the corresponding fifth gear 139 and the first gear 129, respectively.

[0046] In this embodiment, the second support frame 135 provides stable support for the second transmission shaft 136, ensuring its rotational accuracy; the two fifth gears 139 are connected to the first gear 129 of the active drive unit through the transmission belt 138 to achieve synchronous power transmission and ensure the coordinated operation of the main channel valve and the filter channel valve; the power is transmitted to the second valve stem 120 of the main channel through the meshing of the third bevel gear 150 and the fourth bevel gear 137, driving the main channel valve core to rotate and realizing the on / off control of the main channel; the setting of the two transmission belts 138 improves the reliability of the transmission. Even if one of the transmission belts 138 fails, the other can still maintain the basic transmission function, enhancing the fault tolerance of the equipment.

[0047] Furthermore, the second transmission unit includes a screw 140, two connectors 141, two racks 142, two sixth gears 143, a fixing frame 144, and two sets of traction units. The screw 140 passes through the drive sleeve 128 and is threadedly engaged with the drive sleeve 128. The two connectors 141 are respectively fixedly connected to the screw. Each connector 141 has a rack 142 fixedly installed at its end. Each sixth gear 143 is fixedly connected to the corresponding second valve stem 120 and meshes with the corresponding rack 142. The fixing frame 144 is fixedly connected to the motor frame 123. Both sets of traction units are fixedly installed on the motor frame 123 and are respectively connected to the corresponding racks 142.

[0048] In this embodiment, the screw 140 is threadedly engaged with the drive sleeve 128, converting the rotational motion of the drive sleeve 128 into the axial linear motion of the screw 140, thus achieving a conversion of the power transmission form. The screw 140 and the rack 142 are fixedly connected by the connector 141, so that the axial movement of the screw 140 drives the rack 142 to move synchronously. Then, the meshing of the rack 142 with the sixth gear 143 converts the linear motion into rotational motion, driving the second valve stem 120 of the front and rear stages of the filter channel to rotate, thereby achieving the on / off control of the filter channel. The fixing frame 144 provides an installation base for the traction unit. The traction unit restricts and guides the movement direction of the rack 142, ensuring the meshing accuracy of the rack 142 and the sixth gear 143, avoiding tooth disengagement, and improving transmission stability.

[0049] Furthermore, the traction unit includes a movable frame 145, two guide rods 146, and two fixed sleeves 147. The movable frame 145 is fixedly connected to the fixed frame 144, and both fixed sleeves 147 are fixedly connected to the rack 142. One end of each guide rod 146 is movably connected to the movable frame 145, and the other end of each guide rod 146 is fixedly connected to the corresponding fixed sleeve 147.

[0050] In this embodiment, the movable frame 145 is fixedly connected to the fixed frame 144, providing stable support for the guide rod 146; the guide rod 146 is connected to the rack 142 through the fixed sleeve 147, guiding and limiting the movement of the rack 142, ensuring that the rack 142 always moves in a straight line, and ensuring precise meshing with the sixth gear 143; the two guide rods 146 are symmetrically arranged, making the force on the rack 142 more even, avoiding tilting or deviation of the rack 142 during movement, further improving the transmission stability and reliability of the second transmission unit, and ensuring the synchronous operation accuracy of the valves before and after the filter channel.

[0051] Example 2:

[0052] Please see Figure 6 and Figure 7 The present invention provides a dual-mode valve structure, including a pipeline body 101, a first valve assembly, three sets of second valve assemblies, an outlet flange 121, an inlet flange 122 and a drive assembly, and also includes two sets of impurity crushing units. Each set of impurity crushing units is connected to the corresponding second valve housing 116 and is located below the second valve housing 116. The second valve core 117 has a plurality of filter holes 148.

[0053] In this embodiment, the structure is basically the same as that of Embodiment 1. The core improvement is that the three sets of second valve assemblies are a front valve assembly, a rear valve assembly, and a main channel valve assembly. The second valve core 117 of the front valve assembly and the rear valve assembly are both spherical valve cores with the filter holes 148, which are the same as those of the first valve core 103. In addition, a set of impurity crushing units, which are the same as those of the first valve assembly, are added below the housings 116 of these two second valves. That is, the front valve assembly, the first valve assembly, and the rear valve assembly all have filtration and impurity crushing functions, forming a three-stage filtration structure.

[0054] The impurity crushing units of the front valve assembly and the rear valve assembly have the same structure as the impurity crushing unit of the first valve assembly. Their connecting housings 106 are fixedly connected to the bottom of the corresponding second valve housings 116. The hollow funnel 107 passes through the second valve core 117 and is fixedly connected to the second valve core 117. When the second valve core 117 rotates, it synchronously drives the crushing shaft 112 and the triple auger to rotate, thereby crushing impurities. In addition, the diameter of the valve core filter holes 148 of the front valve assembly, the first valve assembly, and the rear valve assembly decreases sequentially. The diameter of the filter holes 148 of the valve core of the front valve assembly is the largest, which is used to intercept large particulate impurities; the diameter of the filter holes 148 of the valve core of the first valve assembly is in the middle, which is used to intercept medium particulate impurities; and the diameter of the filter holes 148 of the valve core of the rear valve assembly is the smallest, which is used to intercept fine particulate impurities, forming a multi-stage gradient filtration.

[0055] Working process and principle: The dual-mode valve structure in this embodiment also has a filtration mode and a free-flow mode:

[0056] Filtration Mode (Motor Off): The valve cores of the front valve assembly, the first valve assembly, and the rear valve assembly are all in the open state, while the valve core of the corresponding second valve assembly (main channel valve assembly) is in the closed state. After the medium enters from the inlet flange 122, it first flows through the front valve assembly, where the large-diameter filter holes 148 on its valve core intercept large particles of impurities. The impurities fall through the hollow funnel 107 into the impurity crushing unit below, where they are crushed by the triple agitator and discharged or deposited. Subsequently, the medium flows through the first valve assembly, where the filter holes 148 intercept medium-sized particles of impurities, which are also processed by the impurity crushing unit. Finally, the medium flows through the rear valve assembly, where the small-diameter filter holes 148 intercept fine particles of impurities. After being processed by the impurity crushing unit, the medium flows out from the outlet flange 121. This mode is suitable for working conditions where the medium has a high impurity content and uneven particle size. Multi-stage gradient filtration can significantly improve the filtration effect, and the synchronous operation of the impurity crushing unit reduces the risk of clogging of each stage of the filter assembly.

[0057] Example 3:

[0058] Please see Figure 8 The present invention provides a dual-mode valve structure, including a pipe body 101, a first valve assembly, two sets of second valve assemblies, an outlet flange 121, an inlet flange 122 and a drive assembly. Each set of impurity crushing units is connected to the corresponding second valve housing 116 and is located below the second valve housing 116. The second valve core 117 has a plurality of filter holes 148.

[0059] In this embodiment, which is a single-channel filtration model, the core improvement compared to Embodiment 1 is that: one second valve assembly and the first transmission unit are eliminated, the main body of the pipeline 101 is a straight-through structure, and only two sets of second valve assemblies (front valve assembly and rear valve assembly) and the first valve assembly (main channel valve assembly) are retained to form a single filtration channel. The second valve core 117 of the front valve assembly and the rear valve assembly are both spherical valve cores with the filter holes 148, and the impurity crushing unit is set below them. Together with the first valve assembly, they form a three-stage filtration structure. The drive assembly only retains the active drive unit and the second transmission unit, which are used to drive the valve cores of the front valve assembly, the first valve assembly and the rear valve assembly to rotate, so as to realize the on-off control of the filtration channel. There is no free flow mode, and it only has filtration and shut-off functions.

[0060] Working process and principle: Filtration state: When the drive motor 124 is not started, the valve cores of the front valve assembly, the first valve assembly, and the rear valve assembly are all in the open state. After the medium enters from the inlet flange 122, it passes through the front, middle, and rear three-stage filtration in sequence. The impurity crushing unit at each stage simultaneously crushes the intercepted impurities, achieving efficient filtration and impurity removal. It is suitable for working conditions with high filtration accuracy requirements and media containing impurities for a long time. Shutdown state: When the drive motor 124 is started, the drive assembly drives the valve cores of the front valve assembly, the first valve assembly, and the rear valve assembly to rotate to the closed position, realizing the complete shutdown of the filtration channel; or after removing the transmission component, the valve cores can be closed by hand-cranking to meet the shutdown requirements.

[0061] Beneficial effects: This embodiment is a simplified single-channel filter model with a relatively compact structure and lower manufacturing cost. It is suitable for specific working conditions that only require filtration and shut-off functions. The three-stage filtration structure ensures filtration accuracy and effect. The impurity crushing unit reduces the risk of clogging and is easy to maintain. It can meet the long-term stable operation requirements under a single working condition.

[0062] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A dual-mode valve structure, characterized in that, The system includes a pipeline body, a first valve assembly, three sets of second valve assemblies, an outlet flange, and an inlet flange. The outlet flange and the inlet flange are respectively connected to the pipeline body. The first valve assembly and the three sets of second valve assemblies are respectively disposed on the pipeline body. The first valve assembly includes a first valve housing, a first valve core, two first bearings, two first seals, an impurity agitation unit, and a first valve stem. The first valve housing is connected to the pipeline body. The two first seals are both disposed within the first valve housing. The first valve core is rotatably disposed within the first valve housing and located between the two first seals. The first valve stem is connected to the first valve core and located above the first valve core. The two first bearings are both fixedly disposed within the first valve housing and are also sleeved on the outer wall of the first valve stem. The first valve core has multiple filter holes located on the downstream end face of the first valve core. The impurity agitation unit is connected to the first valve housing and located below the first valve housing. The impurity crushing unit includes a connecting shell, a hollow funnel, a first auger, a second auger, a third auger, two limiting blocks, and a crushing shaft. The connecting shell is connected to and located below the first valve shell. Both limiting blocks are disposed within the connecting shell, and each limiting block has multiple through holes. The crushing shaft is movably connected to and passes through both limiting blocks. The first auger is fixedly connected to the crushing shaft and is located above one of the limiting blocks. The third auger is fixedly connected to the crushing shaft and is located below the other limiting block. The hollow funnel is fixedly connected to and located above the crushing shaft. The hollow funnel is also rotatably connected to and passes through the first valve core.

2. The dual-mode valve structure as described in claim 1, characterized in that, The impurity crushing unit also includes a cover plate and a sealing ring. The cover plate is fixedly connected to the connecting housing and is located below the connecting housing. The sealing ring is disposed between the cover plate and the connecting housing.

3. The dual-mode valve structure as described in claim 2, characterized in that, The second valve assembly includes a second valve housing, a second valve core, two second bearings, two second seals, and a second valve stem. The second valve housing is connected to the main pipe body. Both second seals are disposed within the second valve housing. The second valve core is rotatably disposed within the second valve housing and located between the two second seals. The second valve stem is connected to the second valve core and located above the second valve core. Both second bearings are fixedly disposed within the second valve housing and are also sleeved on the outer wall of the second valve stem.

4. The dual-mode valve structure as described in claim 3, characterized in that, The dual-mode valve structure also includes a drive assembly located above the main body of the pipeline, which is connected to the first valve stem and three second valve stems respectively.

5. The dual-mode valve structure as described in claim 4, characterized in that, The drive assembly includes an active drive unit, a first transmission unit, and a second transmission unit. The active drive unit, the first transmission unit, and the second transmission unit are all located above the main body of the pipe. The active drive unit is connected to the first valve stem, the first transmission unit is connected to one of the second valve stems, and the second transmission unit is connected to the other two second valve stems. The first transmission unit and the second transmission unit are respectively connected to the active drive unit.

6. The dual-mode valve structure as described in claim 5, characterized in that, The active drive unit includes a motor frame, a drive motor, a first bevel gear, a second bevel gear, two traction frames, a drive sleeve, two first gears, a second gear, a first support frame, a first transmission shaft, a third gear, and a fourth gear. The motor frame is fixedly connected to the first valve housing and located on the outer wall of the first valve housing. The drive motor is fixedly mounted above the motor frame. Both first gears are connected to the output end of the drive motor. Both traction frames are fixedly mounted on the outer wall of the drive motor. The drive sleeve is movably mounted inside the two traction frames. The second gear and the first bevel gear are both fixedly mounted on the outer wall of the drive sleeve. The second gear meshes with the corresponding first gear. The first support frame is fixedly connected to the motor frame. The first transmission shaft is movably connected to the first support frame. The second bevel gear is fixedly connected to the first transmission shaft and also meshes with the first bevel gear. The third gear is fixedly mounted on the outer wall of the first transmission shaft. The fourth gear is fixedly connected to the first valve stem and meshes with the third gear.

7. The dual-mode valve structure as described in claim 6, characterized in that, The first transmission unit includes a second support frame, a second transmission shaft, a third bevel gear, a fourth bevel gear, two transmission belts, and two fifth gears. The second support frame is fixedly connected to the second valve housing and is located on the outer wall of the second valve housing. The second transmission shaft is movably disposed within the second support frame. The third bevel gear is fixedly sleeved on the outer wall of the second transmission shaft. The fourth bevel gear is fixedly connected to the second valve stem and meshes with the third gear. Both fifth gears are fixedly sleeved on the outer wall of the second transmission shaft. Each transmission belt meshes with the corresponding fifth gear and the first gear, respectively.

8. The dual-mode valve structure as described in claim 7, characterized in that, The second transmission unit includes a screw, two connecting parts, two racks, two sixth gears, a fixed frame, and two sets of traction units. The screw passes through the drive sleeve and is threadedly engaged with the drive sleeve. The two connecting parts are fixedly connected to the screw. Each connecting part has a rack fixedly installed at its end. Each sixth gear is fixedly connected to the corresponding second valve stem and meshes with the corresponding rack. The fixed frame is fixedly connected to the motor frame. Both sets of traction units are fixedly installed on the motor frame and connected to the corresponding racks.

9. The dual-mode valve structure as described in claim 8, characterized in that, The traction unit includes a movable frame, two guide rods, and two fixed sleeves. The movable frame is fixedly connected to the fixed frame, and both fixed sleeves are fixedly connected to the rack. One end of each guide rod is movably connected to the movable frame, and the other end of each guide rod is fixedly connected to the corresponding fixed sleeve.

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