Integrated valve for tank delivery and suction and working method thereof

Abstract

The present application belongs to the technical field of engineering elements, and particularly relates to a back-suction integrated valve for tank conveying and a working method thereof. The present application provides a back-suction integrated valve for tank conveying, comprising: a valve body, an axial connecting channel is formed in the valve body, the connecting channel is communicated with the flow channel; an on-off assembly is arranged in the connecting channel in a lifting mode and is adapted to open and close the connecting channel; a back-suction assembly is arranged in the connecting channel in a lifting mode and is arranged above the on-off assembly; an adjusting sealing assembly is arranged on the upper end of the on-off assembly in a sliding mode; when the back-suction assembly moves downward, the adjusting sealing assembly is adapted to guide the diaphragm top rod of the back-suction assembly to abut coaxially with the upper end of the on-off assembly; when the on-off assembly moves upward, the adjusting sealing assembly is pushed downward by the inner wall of the connecting channel to improve the air tightness of the on-off assembly and the connecting channel; and the air tightness of the on-off assembly is improved through the arrangement of the adjusting sealing assembly.

Description

Technical Field

[0001] This invention belongs to the field of engineering components technology, specifically relating to valves, and more particularly to a back-suction integrated valve for tank conveying and its working method. Background Technology

[0002] In the semiconductor industry, a backflow valve is often installed on the main ultrapure water pipeline to ensure stable water pressure throughout the system. When the supply of liquid to the semiconductor wafer is stopped, the backflow valve has the function of preventing so-called "liquid dripping".

[0003] In the relevant technology, when air is supplied to the upper nozzle, the upper piston pushes the diaphragm push rod downward so that the diaphragm push rod abuts against the push rod on the on / off diaphragm. The on / off diaphragm drives the lower piston downward to open the flow channel of the valve body. When the upper nozzle exhausts air, the spring pushes the lower piston upward, and the on / off diaphragm moves upward to cut off the flow channel.

[0004] However, the diaphragm push rod needs to both abut against the push rod on the switch diaphragm and separate from it. Conventional connection methods cannot guarantee the lifespan of the two being coaxial. Moreover, after the switch diaphragm abuts against the inner wall of the flow channel multiple times, the side wall of the switch diaphragm will be worn by impact, resulting in poor sealing effect of the single-layer inclined surface contact.

[0005] Therefore, how to solve the problem of poor sealing between the diaphragm and the inner wall of the flow channel is a technical problem that urgently needs to be solved in this field.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0007] This disclosure provides at least one embodiment of a back-suction integrated valve for tank conveying and its operating method.

[0008] In a first aspect, embodiments of this disclosure provide a back-suction integrated valve for tank conveying, comprising:

[0009] The valve body has a flow channel opened radially.

[0010] The valve body has a connecting channel along the axial direction, and the connecting channel is connected to the flow channel;

[0011] A switching component, which is raised and lowered within the connection channel and is adapted to open and close the connection channel;

[0012] The suction assembly is vertically mounted within the connection channel and positioned above the on / off assembly.

[0013] Adjust the sealing assembly, which is slidably disposed at the upper end of the on / off assembly;

[0014] When the back suction assembly moves downward, the adjusting sealing assembly is adapted to guide the diaphragm top rod of the back suction assembly so that it abuts coaxially with the upper end of the on / off assembly.

[0015] When the on / off assembly moves upward, the adjusting sealing assembly is pushed downward by the inner wall of the connecting channel to improve the airtightness between the on / off assembly and the connecting channel.

[0016] In one optional embodiment, the switching component includes: a switching diaphragm, the outer wall of which is disposed on the inner wall of the connecting channel, and the switching diaphragm is disposed below the flow channel;

[0017] A push rod cone is disposed at the upper end of the switching diaphragm, and the upper end is adapted to abut against the inner wall of the connecting channel;

[0018] A receiving groove is formed on the top wall of the push rod cone, and the inner diameter of the receiving groove is larger than the diameter of the diaphragm push rod;

[0019] When the top rod cone moves upward, the inclined surface of its outer wall is adapted to abut against the connecting channel to seal the flow channel.

[0020] In one alternative embodiment, the adjusting sealing assembly includes: a guide plate slidably disposed within the receiving groove and adapted to abut against the diaphragm top rod;

[0021] The sealing ring is raised and lowered on the top rod cone and is linked with the guide plate;

[0022] When the diaphragm push rod presses the guide plate to move radially outward, the guide plate is adapted to drive the sealing ring to move upward, so that the upper end of the sealing ring protrudes from the inclined surface of the push rod cone.

[0023] In one optional embodiment, an annular groove is formed at the upper end of the push rod cone, the annular groove is disposed on the outer ring of the receiving groove, and the sealing ring is flexibly disposed within the annular groove.

[0024] In one optional embodiment, the push rod cone is provided with a plurality of connecting grooves along the radial direction, each connecting groove corresponding to a guide piece, and the connecting grooves are connected to the annular grooves;

[0025] The lower end of the sealing ring is provided with a through hole corresponding to the communicating groove along the radial direction, and the sealing ring is adapted to open and close the communicating groove.

[0026] When the diaphragm pusher pushes each guide plate outward, the guide plate pushes the sealing ring upward;

[0027] When the sealing ring is squeezed and moves downward, it is adapted to push each guide piece inward to reset.

[0028] In one optional embodiment, the guide plate is L-shaped, and the inner sidewall of the vertical section of the guide plate is provided with a first slope, which is adapted to guide the diaphragm push rod to move toward the axis of the receiving groove.

[0029] The horizontal section of the guide plate is located below the sealing ring, and a second slope is provided at its upper end, the second slope abutting against the bottom wall of the sealing ring;

[0030] When the guide plate slides radially outward, the second ramp is adapted to push the sealing ring upward.

[0031] In one alternative embodiment, two guide posts are vertically arranged on the side of the guide plate away from the first slope;

[0032] The inner wall of the receiving groove is provided with a groove that matches the guide post, and the guide post is slidably disposed within the groove.

[0033] Each of the guide posts is fitted with a spring on its outer wall. The two ends of the spring abut against the bottom wall of the groove and the side wall of the guide piece, respectively. The spring is adapted to push the guide piece to move away from the side wall of the receiving groove.

[0034] In one optional embodiment, an upper piston is vertically mounted within the connecting channel, the upper piston being positioned above the back suction assembly and adapted to abut against the back suction assembly;

[0035] An air pipe is provided on the side wall of the valve body corresponding to the upper piston, and the air pipe is connected to the connecting channel;

[0036] In this process, air is supplied through the trachea into the connecting channel to push the upper piston downward.

[0037] In one optional embodiment, a lower piston is provided on the bottom wall of the connecting channel, the lower piston being located below the switching assembly and adapted to abut against the switching assembly;

[0038] A return spring is provided at the lower end of the lower piston, and the return spring is adapted to push the lower piston upward.

[0039] In one alternative embodiment, it includes: a valve body having a flow channel formed radially;

[0040] The valve body has a connecting channel along the axial direction, and the connecting channel is connected to the flow channel;

[0041] A switching component, which is raised and lowered within the connection channel and is adapted to open and close the connection channel;

[0042] The suction assembly is vertically mounted within the connection channel and positioned above the on / off assembly.

[0043] Adjust the sealing assembly, which is slidably disposed at the upper end of the on / off assembly;

[0044] The adjusting sealing assembly includes: a guide plate, which is slidably disposed in the receiving groove and adapted to abut against the diaphragm top rod;

[0045] The sealing ring is raised and lowered on the top rod cone and is linked with the guide plate;

[0046] When the back suction assembly moves downward, the guide plate is adapted to guide the diaphragm top rod of the back suction assembly so that it abuts coaxially with the upper end of the on / off assembly.

[0047] When the switching assembly moves upward, the sealing ring is pushed downward by the inner wall of the connecting channel to improve the airtightness between the switching assembly and the connecting channel.

[0048] In one optional embodiment, an annular groove is formed at the upper end of the push rod cone, the annular groove is disposed on the outer ring of the receiving groove, and the sealing ring is movably disposed within the annular groove;

[0049] The top rod cone has several connecting grooves along the radial direction, one connecting groove corresponds to one guide piece, and the connecting groove is connected to the annular groove;

[0050] The lower end of the sealing ring is provided with a through hole corresponding to the communicating groove along the radial direction, and the sealing ring is adapted to open and close the communicating groove.

[0051] When the diaphragm pusher pushes each guide plate outward, the guide plate pushes the sealing ring upward;

[0052] When the sealing ring is squeezed and moves downward, it is adapted to push each guide piece inward to reset.

[0053] Secondly, this disclosure also provides a method for operating a valve body, the method comprising:

[0054] When the flow channel needs to be opened, as the back suction assembly moves downward, the diaphragm push rod is adapted to push the on / off assembly downward to open the flow channel;

[0055] The adjusting sealing assembly is adapted to guide the diaphragm top rod so that it abuts coaxially with the upper end of the on / off assembly;

[0056] When the flow channel needs to be closed, as the on / off component moves upward, the adjusting sealing component is pushed downward by the inner wall of the connecting channel to improve the airtightness between the on / off component and the connecting channel.

[0057] After the diaphragm push rod detaches from the push rod cone, it continues to move upward. The back suction assembly is adapted to create a negative pressure in the valve body so that the medium in the downstream flow channel of the valve body can flow back.

[0058] The beneficial effects of this invention are that the integrated back-suction valve for tank conveying and its working method, by adjusting the setting of the sealing assembly, when the diaphragm push rod moves downward, the guide plate is adapted to guide the diaphragm push rod into the receiving groove, so that the diaphragm push rod and the push rod cone are coaxially arranged, avoiding the situation where the push rod cone is offset when pushed by the diaphragm push rod. When the on / off assembly moves upward to close the flow channel, the sealing ring and the push rod cone respectively abut against the connecting channel, realizing a double-layer sealing effect and improving the sealing effect of the flow channel.

[0059] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0060] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0061] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0062] Figure 1 A perspective view of a tank conveying integrated back suction valve provided in an embodiment of this disclosure;

[0063] Figure 2 A front cross-sectional view of the integrated suction valve for tank conveying provided in an embodiment of this disclosure;

[0064] Figure 3 A perspective view of the on / off component provided in an embodiment of this disclosure;

[0065] Figure 4 A cross-sectional perspective view of the switching component provided in the embodiments of this disclosure;

[0066] Figure 5 A perspective view of the sealing ring provided in an embodiment of this disclosure;

[0067] Figure 6 A perspective view of the guide sheet provided in an embodiment of this disclosure.

[0068] In the picture:

[0069] 1. Valve body; 10. Flow channel; 11. Connecting channel; 12. Upper piston; 13. Lower piston; 14. Air pipe;

[0070] 2. Switching component; 21. Switching diaphragm; 22. Push rod cone; 23. Receiving groove; 24. Annular groove; 25. Connecting groove;

[0071] 3. Backflow assembly; 30. Diaphragm top rod;

[0072] 4. Adjusting the sealing assembly; 41. Guide plate; 42. Sealing ring; 43. First ramp; 44. Second ramp; 45. Guide post. Detailed Implementation

[0073] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0074] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0075] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0076] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0077] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0078] Research has revealed the following drawbacks of existing technologies: In related technologies, when air is supplied to the upper nozzle, the upper piston pushes the diaphragm push rod downwards so that the diaphragm push rod abuts against the push rod on the on / off diaphragm. The on / off diaphragm then drives the lower piston downwards to open the flow channel of the valve body. However, when the upper nozzle exhausts air, the spring pushes the lower piston upwards, and the on / off diaphragm moves upwards to cut off the flow channel.

[0079] However, the diaphragm push rod needs to both abut against the push rod on the switch diaphragm and be separated from it. Conventional connection methods cannot guarantee the lifespan of the two being coaxial. Moreover, when the switch diaphragm abuts against the inner wall of the flow channel, the single-layer inclined surface contact sealing effect is not good.

[0080] Therefore, ensuring that the center of the diaphragm and the diaphragm push rod are coaxial, and avoiding poor sealing between the diaphragm and the inner wall of the flow channel, are technical problems that urgently need to be solved in this field.

[0081] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0082] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0083] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0084] like Figures 1 to 6As shown, some embodiments provide a back-suction integrated valve for tank conveying, comprising: a valve body 1 having a flow channel 10 radially formed therein; an inlet pipe and an outlet pipe respectively provided on both sides of the outer wall of the valve body 1, the inlet pipe and the outlet pipe respectively communicating with the two ends of the flow channel 10; the inlet pipe conveys liquid into the valve body 1, and when the flow channel 10 is opened, the liquid passes through the valve body 1 and flows out through the outlet pipe. The valve body 1 has a connecting channel 11 axially formed, the connecting channel 11 communicating with the flow channel 10; a switching component 2, which is raised and lowered within the connecting channel 11 and adapted to open and close the connecting channel 11; and a back-suction component 3, which is raised and lowered within the connecting channel 11 and positioned above the switching component 2, the back-suction component 3 being adapted to draw the liquid in the outlet pipe into the cavity inside the valve body 1 under negative pressure after the flow channel 10 is cut off by the switching component 2. An adjusting sealing assembly 4 is slidably disposed on the upper end of the on / off assembly 2. When the backflow assembly 3 moves downward, the adjusting sealing assembly 4 is adapted to guide the diaphragm push rod 30 of the backflow assembly 3, making it coaxially abut against the upper end of the on / off assembly 2. During the insertion of the diaphragm push rod 30 into the receiving groove 23, each guide piece 41 is adapted to limit and guide the diaphragm push rod 30, ensuring that the diaphragm push rod 30 remains coaxial with the push rod cone 22 during insertion into the receiving groove 23, preventing any offset of the diaphragm push rod 30 relative to the push rod cone 22. When the guide piece 41 is squeezed and slides towards the outer wall of the push rod cone 22, the guide piece 41 is adapted to push the sealing ring 42 upward, so that the upper end of the sealing ring 42 protrudes beyond the inclined surface outside the push rod cone 22. The diaphragm push rod 30 pushes the push rod cone 22 downward to open the flow channel 10. When the on / off assembly 2 moves upward, the adjusting sealing assembly 4 is pushed downward by the inner wall of the connecting channel 11 to improve the airtightness between the on / off assembly 2 and the connecting channel 11. At this time, the inclined surface at the upper end of the push rod cone 22 abuts against the inner wall of the flow channel 10, while the upper end wall of the sealing ring 42 abuts against the sharp corner at the intersection of the flow channel 10 and the connecting channel 11, thereby achieving a double-layer sealing effect. This ensures that when the flow channel 10 is cut off, the pressure in the inlet direction of the flow channel 10 cannot cause the on / off diaphragm 21 to shift, thus guaranteeing sealing performance and service life.

[0085] Reference Appendix Figure 3The on / off assembly 2 includes: an on / off diaphragm 21, the outer wall of which is disposed on the inner wall of the connecting channel 11, and the on / off diaphragm 21 is disposed below the flow channel 10; the on / off diaphragm 21 is a flexible component, which is corrosion-resistant and high-temperature resistant; the on / off diaphragm 21 is adapted to block the liquid in the connecting channel 11 from flowing downward to the lower piston 13; a push rod cone 22 is disposed at the upper end of the on / off diaphragm 21, and the upper end is adapted to abut against the inner wall of the connecting channel 11; the outer wall of the upper end of the push rod cone 22 is provided with an annular inclined surface. When the push rod is pushed upward by the lower piston 13, the push rod is adapted to seal the connecting channel 11 to cut off the flow channel 10. A receiving groove 23 is formed on the top wall of the push rod cone 22. The inner diameter of the receiving groove 23 is larger than the diameter of the diaphragm push rod 30. The diaphragm push rod 30 is adapted to be inserted into the receiving groove 23. When the diaphragm push rod 30 moves downward, it is adapted to push the push rod cone 22 downward to open the flow channel 10. When the push rod cone 22 moves upward, the inclined surface of its outer wall is adapted to abut against the connecting channel 11 to seal the flow channel 10. Simultaneously, the top wall of the sealing ring 42 abuts against the sharp corner at the intersection of the flow channel 10 and the connecting channel 11 to achieve a double-layer sealing effect.

[0086] Reference Appendix Figure 4 The adjusting sealing assembly 4 includes: a guide plate 41, which is slidably disposed within the receiving groove 23 and adapted to abut against the diaphragm push rod 30; the guide plate 41 is adapted to slide radially along the push rod cone 22; during the process of the diaphragm push rod 30 being vertically inserted into the receiving groove 23, it is adapted to push the guide plate 41 to move towards the sealing ring 42. The sealing ring 42 is vertically disposed on the push rod cone 22 and is linked with the guide plate 41; when the guide plate 41 slides radially outward, the guide plate 41 is adapted to push the sealing ring 42 upward. When the diaphragm push rod 30 compresses the guide plate 41 to move radially outward, the guide plate 41 is adapted to drive the sealing ring 42 upward, so that the upper end of the sealing ring 42 protrudes from the inclined surface of the push rod cone 22.

[0087] Reference Appendix Figure 4The upper end of the push rod cone 22 has an annular groove 24, which is located on the outer ring of the receiving groove 23. The sealing ring 42 is lenticularly disposed within the annular groove 24. The push rod cone 22 has a plurality of connecting grooves 25 radially, each connecting groove 25 corresponding to a guide piece 41, and the connecting grooves 25 are connected to the annular grooves 24. The horizontal section of the guide piece 41 is adapted to slide within the connecting grooves 25. The lower end of the sealing ring 42 has a through hole radially corresponding to the connecting grooves 25. The area of ​​the upper top wall of the through hole is larger than the area of ​​the lower bottom wall. When water flows into the through hole from the valve body 1, the water flow exerts an upward thrust on the sealing ring 42. The sealing ring 42 is adapted to open and close the connecting groove 25; when the upper end of the sealing ring 42 protrudes from the inclined surface of the push rod cone 22, the sealing ring 42 is adapted to seal the connecting groove 25; wherein, when the diaphragm push rod 30 pushes each guide plate 41 to slide outward, the guide plate 41 pushes the sealing ring 42 to move upward; the sealing ring 42 is squeezed downward to push the guide plate 41 to return to its original position. When the sealing ring 42 is pushed downward, the space between the push rod cone 22 and the back suction assembly 3 increases, increasing the upward deformation of the back suction assembly 3 to draw liquid from the water pipe under negative pressure.

[0088] Reference Appendix Figure 6 The guide plate 41 is L-shaped. A first slope 43 is provided on the inner wall of the vertical section of the guide plate 41. The first slope 43 is suitable for guiding the diaphragm push rod 30 to move towards the axis of the receiving groove 23. When the diaphragm push rod 30 moves downward, the bottom wall of the diaphragm push rod 30 first abuts against the first slope 43. The first slope 43 is suitable for guiding the diaphragm push rod 30 to slide into the receiving groove 23, and also for guiding the diaphragm push rod 30 to be coaxially aligned with the push rod cone 22. The horizontal section of the guide plate 41 is located below the sealing ring 42, and a second slope 44 is provided at its upper end. The second slope 44 abuts against the bottom wall of the sealing ring 42. When the guide plate 41 slides radially outward, the second slope 44 is suitable for pushing the sealing ring 42 upward. When the sealing ring 42 is squeezed and moves downward, the push rod cone 22 cuts off the flow channel 10, and the spring pushes the guide plate 41 so that the guide plate 41 moves back to the axis of the push rod cone 22.

[0089] Furthermore, two guide posts 45 are vertically arranged on the side of the guide piece 41 away from the first slope 43; the inner wall of the receiving groove 23 has a groove adapted to the guide posts 45, the guide posts 45 are slidably disposed in the groove, and a spring is sleeved on the outer wall of each guide post 45, the two ends of the spring abutting against the bottom wall of the groove and the side wall of the guide piece 41 respectively, the spring being adapted to push the guide piece 41 to move away from the side wall of the receiving groove 23. The arrangement of the guide posts 45 improves the stability of each guide piece 41 when sliding radially along the push rod cone 22.

[0090] Reference Appendix Figure 2 An upper piston 12 is vertically mounted within the connecting channel 11. The upper piston 12 is positioned above the back suction assembly 3 and is adapted to abut against the upper end of the back suction assembly 3. A limiting ring is provided within the valve body 1. The limiting ring is positioned between the back suction assembly 3 and the upper piston 12, and is arranged circumferentially along the back suction assembly 3. When the back suction assembly 3 deforms upward, the limiting ring is adapted to limit the back suction assembly 3 to prevent excessive deformation. An air pipe 14 is provided on the side wall of the valve body 1 corresponding to the upper piston 12. The air pipe 14 communicates with the connecting channel 11. The air pipe 14 supplies air into the connecting channel 11 to push the upper piston 12 downward. When the upper piston 12 moves downward, it is adapted to push the back suction assembly 3 downward simultaneously. The diaphragm push rod 30 of the back suction assembly 3 is adapted to push the push rod cone 22 downward to open the flow channel 10. Furthermore, the washing assembly includes a back-suction membrane, the outer wall of which is disposed on the inner wall of the connecting channel 11. The back-suction membrane is adapted to block liquid and prevent it from flowing to the upper piston 12. The back-suction membrane is a flexible component. When the air pipe 14 exhausts air outward, the upper piston 12 is drawn upward by negative pressure, and the upper piston 12 simultaneously drives the back-suction membrane to expand and deform upward. At this time, the lower piston 13 pushes the push rod upward to cut off the flow channel 10, and the space between the push rod cone 22 and the back-suction membrane inside the valve body 1 increases, thereby drawing back the liquid in the water outlet pipe under negative pressure and adsorbing it into the valve body 1.

[0091] Reference Appendix Figure 2 A lower piston 13 is provided on the bottom wall of the connecting channel 11. The lower piston 13 is located below the switching component 2 and is adapted to abut against the switching component 2. A reset spring is provided at the lower end of the lower piston 13, and the reset spring is adapted to push the lower piston 13 to move upward.

[0092] Some embodiments provide a back-suction integrated valve for tank conveying, comprising:

[0093] The valve body 1 has a flow channel 10 opened radially therein;

[0094] The valve body 1 has a connecting channel 11 along the axial direction, and the connecting channel 11 is connected to the flow channel 10;

[0095] The on / off component 2 is raised and lowered within the connection channel 11 and is adapted to open and close the connection channel 11;

[0096] The suction assembly 3 is vertically mounted within the connecting channel 11 and positioned above the on / off assembly 2.

[0097] Adjust the sealing assembly 4, which is slidably disposed at the upper end of the on / off assembly 2;

[0098] The adjusting sealing assembly 4 includes: a guide plate 41, which is slidably disposed in the receiving groove 23 and adapted to abut against the diaphragm top rod 30;

[0099] The sealing ring 42 is raised and lowered on the top rod cone 22 and is linked with the guide plate 41;

[0100] When the back suction assembly 3 moves downward, the guide plate 41 is adapted to guide the diaphragm top rod 30 of the back suction assembly 3 so that it abuts coaxially with the upper end of the on / off assembly 2.

[0101] When the switching component 2 moves upward, the sealing ring 42 is pushed downward by the inner wall of the connecting channel 11 to improve the airtightness between the switching component 2 and the connecting channel 11.

[0102] Furthermore, an annular groove 24 is formed at the upper end of the top rod cone 22. The annular groove 24 is arranged on the outer ring of the receiving groove 23, and the sealing ring 42 is flexibly arranged in the annular groove 24.

[0103] The top rod cone 22 is provided with a plurality of connecting grooves 25 along the radial direction. Each connecting groove 25 corresponds to a guide piece 41, and the connecting groove 25 is connected to the annular groove 24.

[0104] The lower end of the sealing ring 42 is provided with a through hole corresponding to the communicating groove 25 along the radial direction, and the sealing ring 42 is adapted to open and close the communicating groove 25;

[0105] When the diaphragm push rod 30 pushes each guide plate 41 to slide outward, the guide plate 41 pushes the sealing ring 42 to move upward;

[0106] When the sealing ring 42 is squeezed and moves downward, the through hole connects with the connecting groove 25, and the water is suitable for pushing each guide piece 41 to move inward to reset.

[0107] Some embodiments provide a method of operating a valve body, the method comprising:

[0108] When the flow channel 10 needs to be opened, the diaphragm push rod 30 is adapted to push the on / off assembly 2 downward to open the flow channel 10 when the back suction assembly 3 moves downward.

[0109] The adjusting sealing assembly 4 is adapted to guide the diaphragm top rod 30 so that it abuts coaxially with the upper end of the on / off assembly 2;

[0110] When the flow channel 10 needs to be closed, when the on / off component 2 moves upward, the adjusting sealing component 4 is pushed downward by the inner wall of the connecting channel 11 to improve the airtightness between the on / off component 2 and the connecting channel 11.

[0111] After the diaphragm push rod 30 detaches from the push rod cone 22, it continues to move upward. The back suction assembly 3 is adapted to create a negative pressure inside the valve body 1 so that the medium in the rear flow channel 10 of the valve body 1 flows back.

[0112] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0113] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0114] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A back-suction integrated valve for tank conveying, characterized in that, include: The valve body (1) has a flow channel (10) opened in the radial direction. The valve body (1) has a connecting channel (11) along the axial direction, and the connecting channel (11) is connected to the flow channel (10); The on / off component (2) is raised and lowered within the connection channel (11) and is adapted to open and close the connection channel (11). The suction assembly (3) is raised and lowered within the connecting channel (11) and positioned above the on / off assembly (2); Adjust the sealing assembly (4), which is slidably disposed at the upper end of the on / off assembly (2); When the back suction assembly (3) moves downward, the adjusting sealing assembly (4) is adapted to guide the diaphragm top rod (30) of the back suction assembly (3) so that it abuts coaxially with the upper end of the on / off assembly (2); When the switching component (2) moves upward, the adjusting sealing component (4) is pushed downward by the inner wall of the connecting channel (11) to improve the airtightness between the switching component (2) and the connecting channel (11); The switching component (2) includes: a switching diaphragm (21), the outer wall of which is disposed on the inner wall of the connecting channel (11), and the switching diaphragm (21) is disposed below the flow channel (10); A push rod cone (22) is disposed at the upper end of the through-and-off diaphragm (21), and the upper end is adapted to abut against the inner wall of the connecting channel (11); A receiving groove (23) is provided on the top wall of the push rod cone (22), and the inner diameter of the receiving groove (23) is larger than the diameter of the diaphragm push rod (30); When the top rod cone (22) moves upward, the inclined surface of its outer wall is adapted to abut against the connecting channel (11) to seal the flow channel (10). The adjusting sealing assembly (4) includes: a guide plate (41) which is slidably disposed in the receiving groove (23) and adapted to abut against the diaphragm push rod (30); The sealing ring (42) is raised and lowered on the top rod cone (22) and is linked with the guide plate (41); When the diaphragm push rod (30) presses the guide plate (41) to move radially outward, the guide plate (41) is adapted to drive the sealing ring (42) to move upward, so that the upper end of the sealing ring (42) protrudes from the inclined surface of the push rod cone (22).

2. The integrated back-suction valve for tank conveying as described in claim 1, characterized in that, The top rod cone (22) has an annular groove (24) at its upper end. The annular groove (24) is located on the outer ring of the receiving groove (23). The sealing ring (42) is raised and lowered in the annular groove (24), and the sealing ring (42) slides and seals with the annular groove (24).

3. The integrated back-suction valve for tank conveying as described in claim 2, characterized in that, The top rod cone (22) has several connecting grooves (25) in the radial direction. Each connecting groove (25) corresponds to a guide piece (41), and the connecting groove (25) is connected to the annular groove (24). The lower end of the sealing ring (42) is provided with a through hole corresponding to the communicating groove (25) along the radial direction, and the sealing ring (42) is adapted to open and close the communicating groove (25). When the diaphragm push rod (30) pushes each guide plate (41) to slide outward, the guide plate (41) pushes the sealing ring (42) to move upward; When the sealing ring (42) is squeezed and moved downward, the sealing ring (42) is adapted to push the guide plate (41) to move inward and reset.

4. The integrated back-suction valve for tank conveying as described in claim 3, characterized in that, The guide plate (41) is L-shaped, and a first slope (43) is provided on the inner side wall of the vertical section of the guide plate (41). The first slope (43) is suitable for guiding the diaphragm push rod (30) to move in the axial direction of the receiving groove (23). The horizontal section of the guide piece (41) is located below the sealing ring (42), and a second slope (44) is provided at its upper end, the second slope (44) abutting against the bottom wall of the sealing ring (42); When the guide plate (41) slides radially outward, the second ramp (44) is adapted to push the sealing ring (42) upward.

5. The integrated back-suction valve for tank conveying as described in claim 4, characterized in that, Two guide posts (45) are vertically arranged on the side of the guide plate (41) away from the first slope (43). The inner wall of the receiving groove (23) is provided with a groove that matches the guide post (45), and the guide post (45) is slidably disposed in the groove. Each of the guide posts (45) is fitted with a spring on its outer wall. The two ends of the spring abut against the bottom wall of the groove and the side wall of the guide piece (41), respectively. The spring is adapted to push the guide piece (41) to move away from the side wall of the receiving groove (23).

6. The integrated back-suction valve for tank conveying as described in claim 1, characterized in that, An upper piston (12) is vertically installed in the connecting channel (11). The upper piston (12) is located above the back suction assembly (3) and is adapted to abut against the back suction assembly (3). An air pipe (14) is provided on the side wall of the valve body (1) corresponding to the upper piston (12), and the air pipe (14) is connected to the connecting channel (11); The air tube (14) supplies air into the connecting channel (11) to push the upper piston (12) downward.

7. The integrated back-suction valve for tank conveying as described in claim 1, characterized in that, The bottom wall of the connecting channel (11) is provided with a lower piston (13), which is located below the switching assembly (2) and is adapted to abut against the switching assembly (2). A reset spring is provided at the lower end of the lower piston (13), and the reset spring is adapted to push the lower piston (13) to move upward.

8. A back-suction integrated valve for tank conveying, characterized in that, include: The valve body (1) has a flow channel (10) opened in the radial direction. The valve body (1) has a connecting channel (11) along the axial direction, and the connecting channel (11) is connected to the flow channel (10); The on / off assembly (2) is raised and lowered within the connection channel (11) and is adapted to open and close the connection channel (11). The on / off assembly (2) includes a top rod cone (22), and a receiving groove (23) is formed on the top wall of the top rod cone (22). The suction assembly (3) is raised and lowered within the connecting channel (11) and positioned above the on / off assembly (2). Adjust the sealing assembly (4), which is slidably disposed at the upper end of the on / off assembly (2); The adjusting sealing assembly (4) includes: a guide plate (41) which is slidably disposed in the receiving groove (23) and adapted to abut against the diaphragm top rod (30) of the back suction assembly (3); The sealing ring (42) is raised and lowered on the top rod cone (22) and linked with the guide plate (41); When the back suction assembly (3) moves downward, the guide plate (41) is adapted to guide the diaphragm top rod (30) of the back suction assembly (3) so that it abuts coaxially with the upper end of the on / off assembly (2); When the diaphragm push rod (30) presses the guide plate (41) to move radially outward, the guide plate (41) is adapted to drive the sealing ring (42) to move upward, so that the upper end of the sealing ring (42) protrudes from the inclined surface of the push rod cone (22); When the switching assembly (2) moves upward, the sealing ring (42) is pushed downward by the inner wall of the connecting channel (11) to improve the airtightness between the switching assembly (2) and the connecting channel (11).

9. The integrated back-suction valve for tank conveying as described in claim 8, characterized in that, The top rod cone (22) has an annular groove (24) at its upper end. The annular groove (24) is located on the outer ring of the receiving groove (23). The sealing ring (42) is raised and lowered within the annular groove (24). The top rod cone (22) has several connecting grooves (25) in the radial direction. Each connecting groove (25) corresponds to a guide piece (41), and the connecting groove (25) is connected to the annular groove (24). The lower end of the sealing ring (42) is provided with a through hole corresponding to the communicating groove (25) along the radial direction, and the sealing ring (42) is adapted to open and close the communicating groove (25). When the diaphragm push rod (30) pushes each guide plate (41) to slide outward, the guide plate (41) pushes the sealing ring (42) to move upward; The sealing ring (42) is squeezed downward to push the guide plate (41) to move inward to reset.

10. A method for operating a valve body, characterized in that, The working method of using the integrated back-suction valve for tank conveying as described in any one of claims 1-9 includes: When the flow channel (10) needs to be opened, the diaphragm push rod (30) is adapted to push the on / off assembly (2) downward to open the flow channel (10) when the back suction assembly (3) moves downward. The adjusting sealing assembly (4) is adapted to guide the diaphragm push rod (30) so that it abuts coaxially with the upper end of the on / off assembly (2); When the flow channel (10) needs to be closed, when the on / off assembly (2) moves upward, the adjusting sealing assembly (4) is pushed downward by the inner wall of the connecting channel (11) to improve the airtightness between the on / off assembly (2) and the connecting channel (11); After the diaphragm push rod (30) disengages from the push rod cone (22), it continues to move upward. The back suction assembly (3) is adapted to create a negative pressure inside the valve body (1) so that the medium in the back flow channel (10) of the valve body (1) flows back.

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