Integrated back-suction valve for storage tank conveying and working method of integrated back-suction valve

Abstract

The invention belongs to the technical field of engineering elements, and particularly relates to a back-suction integrated valve for storage tank conveying and a working method thereof. The invention provides a back-suction integrated valve for conveying a storage tank, which is characterized in that a valve body is provided with a connecting channel along the axial direction, and the connecting channel is communicated with a flow channel; the on-off assembly is arranged in the connecting channel in a lifting manner and is suitable for opening and closing the connecting channel; the back suction assembly is arranged in the connecting channel in a lifting mode and arranged above the on-off assembly, and the adjusting sealing assembly is arranged at the upper end of the on-off assembly in a sliding mode; when the resorption assembly moves downwards, the adjusting sealing assembly is suitable for guiding a diaphragm ejector rod of the resorption assembly, so that the diaphragm ejector rod coaxially abuts against the upper end of the on-off assembly. When the on-off assembly moves upwards, the adjusting sealing assembly is pushed by the inner wall of the connecting channel to move downwards, so that the air tightness of the on-off assembly and the connecting channel is improved; through the arrangement of the adjusting sealing assembly, the air tightness of the on-off assembly is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering components, and specifically relates to valves, and in particular to an integrated back-suction valve for tank transportation and a working method thereof. Background Art

[0002] In the semiconductor industry, a back-sucking valve is often installed on the main line of electronic ultrapure water to ensure the stability of the water pressure of the entire system; when the supply of liquid to be coated on the semiconductor wafer is stopped, the back-sucking valve has the function of preventing the so-called "liquid dripping".

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

[0004] However, the diaphragm top rod must both abut against the top rod on the on-off diaphragm and be separated from each other. The conventional combination method cannot guarantee the life of the coaxial center of the two. Moreover, after the on-off diaphragm abuts against the inner wall of the flow channel for multiple times, the side wall of the on-off diaphragm will be impacted and worn, resulting in poor single-layer inclined contact sealing effect.

[0005] Therefore, how to solve the problem of poor sealing between the on-off 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 above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0007] The disclosed embodiments at least provide an integrated back-suction valve for tank delivery and a working method thereof.

[0008] In a first aspect, an embodiment of the present disclosure provides a back-suction integrated valve for tank delivery, comprising: The valve body has a flow channel radially formed therein; The valve body is provided with a connecting passage along the axial direction, and the connecting passage is communicated with the flow channel; An on-off assembly, which is lifted and disposed in the connecting passage and is suitable for opening and closing the connecting passage; A back-sucking assembly is arranged in the connecting passage and is arranged above the on-off assembly. An adjusting sealing assembly is slidably disposed on the upper end of the on-off assembly; Wherein, when the back-sucking assembly moves downward, the regulating sealing assembly is suitable for guiding the diaphragm top rod of the back-sucking assembly so that it abuts against the upper end of the on-off assembly coaxially; When the on-off assembly moves upward, the regulating sealing assembly is pushed downward by the inner wall of the connecting channel to improve the air tightness between the on-off assembly and the connecting channel.

[0009] In an optional embodiment, the on-off assembly comprises: an on-off diaphragm, an outer wall of which is arranged on the inner wall of the connecting channel, and the on-off diaphragm is arranged below the flow channel; A push rod cone, which is arranged at the upper end of the on-off diaphragm, and the upper end is suitable for abutting against the inner wall of the connecting channel; A receiving groove is provided on the top wall of the ejector cone, and the inner diameter of the receiving groove is larger than the diameter of the diaphragm ejector; When the push rod cone moves upward, the inclined surface of its outer wall is suitable for abutting against the connecting channel to seal the flow channel.

[0010] In an optional embodiment, the regulating seal assembly includes: a guide sheet, which is slidably disposed in the receiving groove and is suitable for abutting against the diaphragm top rod; A sealing ring, which is arranged on the top rod cone and is linked with the guide piece; When the diaphragm push rod squeezes the guide piece to move radially outward, the guide piece is suitable for driving 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.

[0011] In an optional embodiment, an annular groove is formed at the upper end of the push rod cone, the annular groove is arranged on the outer ring of the accommodating groove, and the sealing ring is lifted and lowered in the annular groove.

[0012] In an optional embodiment, the push rod cone is provided with a plurality of connecting grooves along the radial direction, one connecting groove corresponds to one guide piece, and the connecting groove is connected with the annular groove; A through hole corresponding to the communication groove is radially opened at the lower end of the sealing ring, and the sealing ring is suitable for opening and closing the communication groove; When the diaphragm push rod pushes each guide piece to slide outward, the guide piece pushes the sealing ring to move upward; When the sealing ring is squeezed and moves downward, the sealing ring is suitable for pushing each guide piece to reset and move inward.

[0013] In an optional embodiment, the guide piece is "L"-shaped, and the inner side wall of the vertical section of the guide piece is provided with a first slope, and the first slope is suitable for guiding the diaphragm push rod to move toward the axial direction of the accommodating groove; The horizontal section of the guide piece is arranged below the sealing ring, and a second slope is arranged on the upper end thereof, and the second slope abuts against the bottom wall of the sealing ring; When the guide piece slides radially outward, the second slope is suitable for pushing the sealing ring to move upward.

[0014] In an optional embodiment, two guide columns are vertically arranged on a side of the guide sheet away from the first slope; The inner wall of the receiving groove is provided with a groove adapted to the guide column, and the guide column is slidably arranged in the groove. A spring is sleeved on the outer wall of each guide column, and two ends of the spring are respectively in contact with the bottom wall of the groove and the side wall of the guide piece, and the spring is suitable for pushing the guide piece to move in a direction away from the side wall of the accommodating groove.

[0015] In an optional embodiment, an upper piston is provided in the connecting channel for lifting and lowering, and the upper piston is provided above the back-sucking assembly and is suitable for abutting against the back-sucking assembly; An air pipe is provided at the side wall of the valve body corresponding to the upper piston, and the air pipe is communicated with the connecting channel; The air pipe delivers air into the connecting channel to push the upper piston to move downward.

[0016] In an optional embodiment, a lower piston is provided on the bottom wall of the connecting channel for lifting and lowering, and the lower piston is provided below the on-off assembly and is suitable for abutting against the on-off assembly; A return spring is arranged at the lower end of the lower piston, and the return spring is suitable for pushing the lower piston to move upward.

[0017] In an optional embodiment, the valve comprises: a valve body, which has a flow channel formed in a radial direction; The valve body is provided with a connecting passage along the axial direction, and the connecting passage is communicated with the flow channel; An on-off assembly, which is lifted and disposed in the connecting passage and is suitable for opening and closing the connecting passage; A back-sucking assembly is arranged in the connecting passage and is arranged above the on-off assembly. An adjusting sealing assembly is slidably disposed on the upper end of the on-off assembly; The regulating seal assembly comprises: a guide sheet, which is slidably disposed in the receiving groove and is suitable for abutting against the diaphragm top rod; A sealing ring, which is arranged on the top rod cone and is linked with the guide piece; Wherein, when the suction component moves downward, the guide sheet is suitable for guiding the diaphragm top rod of the suction component so that it abuts against the upper end of the on-off component coaxially; When the on-off assembly moves upward, the sealing ring is pushed downward by the inner wall of the connecting channel to improve the air tightness between the on-off assembly and the connecting channel.

[0018] In an optional embodiment, an annular groove is provided at the upper end of the push rod cone, the annular groove is arranged on the outer ring of the accommodating groove, and the sealing ring is lifted and lowered in the annular groove; The push rod cone is provided with a plurality of connecting grooves along the radial direction, one connecting groove corresponds to one guide piece, and the connecting groove is connected with the annular groove; A through hole corresponding to the communication groove is radially opened at the lower end of the sealing ring, and the sealing ring is suitable for opening and closing the communication groove; When the diaphragm push rod pushes each guide piece to slide outward, the guide piece pushes the sealing ring to move upward; When the sealing ring is squeezed and moves downward, the sealing ring is suitable for pushing each guide piece to reset and move inward.

[0019] In a second aspect, the embodiment of the present disclosure further provides a working method of a valve body, the working method comprising: When the flow channel needs to be opened, when the back-suction component moves downward, the diaphragm push rod is suitable for pushing the on-off component downward to open the flow channel; The regulating seal assembly is suitable for guiding the diaphragm top rod so that it abuts coaxially with the upper end of the on-off assembly; When the flow channel needs to be closed, when the on-off assembly moves upward, the regulating sealing assembly is pushed downward by the inner wall of the connecting channel to improve the air tightness between the on-off assembly and the connecting channel; The diaphragm push rod continues to move upward after being separated from the push rod cone, and the back-suction component is suitable for forming a negative pressure in the valve body to make the medium in the rear flow channel of the valve body flow back.

[0020] The beneficial effect of the present invention is that the integrated back-suction valve for tank delivery and the working method thereof of the present invention adjusts the setting of the sealing component, and when the diaphragm push rod moves downward, the guide sheet is suitable for guiding the diaphragm push rod to insert into the receiving groove, so that the diaphragm push rod and the push rod cone are coaxially arranged, avoiding the situation that the push rod cone is offset when being pushed by the diaphragm push rod. When the on-off component moves upward to close the flow channel, the sealing ring and the push rod cone respectively abut against the connecting channel, achieving a double-layer sealing effect and improving the sealing effect of the flow channel.

[0021] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A three-dimensional diagram of a tank delivery integrated suction valve provided in an embodiment of the present disclosure; Figure 2 A sectional front view of a tank delivery integrated suction valve provided in an embodiment of the present disclosure; Figure 3 A three-dimensional diagram of a switch assembly provided in an embodiment of the present disclosure; Figure 4 A cutaway perspective view of a switch assembly provided in an embodiment of the present disclosure; Figure 5 A three-dimensional diagram of a sealing ring provided in an embodiment of the present disclosure; Figure 6 A three-dimensional view of a guide piece provided for an embodiment of the present disclosure.

[0025] In the figure: 1. Valve body; 10. Flow channel; 11. Connecting channel; 12. Upper piston; 13. Lower piston; 14. Air pipe; 2. On-off assembly; 21. On-off diaphragm; 22. Push rod cone; 23. Accommodating groove; 24. Ring groove; 25. Connecting groove; 3. Suction back assembly; 30. Diaphragm ejector rod; 4. Adjusting sealing assembly; 41. Guide plate; 42. Sealing ring; 43. First slope; 44. Second slope; 45. Guide column. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0028] Herein, example 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 modifying 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.

[0029] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude 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 interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0030] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like 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. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0031] After research, it was found that the shortcomings of the existing technology are: in the related technology, air is supplied to the upper air nozzle, and the upper piston pushes the diaphragm top rod to move downward so that the diaphragm top rod abuts against the top rod on the on-off diaphragm, and the on-off diaphragm drives the lower piston to move downward to open the flow channel of the valve body; and when the upper air nozzle exhausts air, the spring pushes the lower piston to move upward, and the on-off diaphragm moves upward to cut off the flow channel.

[0032] However, the diaphragm top rod must both abut against the top rod on the on-off diaphragm and be separated from each other. The conventional combination method cannot guarantee the life of the coaxial center of the two; and when the on-off diaphragm abuts against the inner wall of the flow channel, the single-layer inclined contact sealing effect is not good.

[0033] Therefore, how to ensure that the centers of the on-off diaphragm and the diaphragm top rod are coaxial, and how to avoid the problem of poor sealing between the on-off diaphragm and the inner wall of the flow channel are technical problems that urgently need to be solved in this field.

[0034] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0037] like Figures 1 to 6As shown, some embodiments provide a back-suction integrated valve for tank transportation, including: a valve body 1, which is provided with a flow channel 10 in the radial direction; an inlet pipe and an outlet pipe are respectively provided on both sides of the outer wall of the valve body 1, and the inlet pipe and the outlet pipe are respectively connected with the two ends of the flow channel 10; the inlet pipe transports 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 is provided with a connecting channel 11 in the axial direction, and the connecting channel 11 is connected with the flow channel 10; a switch assembly 2, which is arranged in the connecting channel 11 and is suitable for opening and closing the connecting channel 11; a back-suction assembly 3, which is arranged in the connecting channel 11 and is arranged above the switch assembly 2, and the back-suction assembly 3 is suitable for negatively pressure-sucking the liquid in the outlet pipe into the chamber inside the valve body 1 after the flow channel 10 is cut off by the switch assembly 2. The regulating seal assembly 4 is slidably arranged at the upper end of the on-off assembly 2; wherein, when the back-suction assembly 3 moves downward, the regulating seal assembly 4 is suitable for guiding the diaphragm push rod 30 of the back-suction assembly 3 so that it abuts coaxially with the upper end of the on-off assembly 2; during the process of inserting the diaphragm push rod 30 into the receiving groove 23, each guide piece 41 is suitable for limiting and guiding the diaphragm push rod 30, so that the diaphragm push rod 30 can maintain a coaxial device with the push rod cone 22 during the process of inserting the diaphragm push rod 30 into the receiving groove 23, thereby avoiding the diaphragm push rod 30 from being offset relative to the push rod cone 22. When the guide piece 41 is squeezed and slides toward the outer wall of the push rod cone 22, the guide piece 41 is suitable for pushing the sealing ring 42 to move upward so that the upper end of the sealing ring 42 protrudes from the inclined surface outside the push rod cone 22. The diaphragm push rod 30 pushes the push rod cone 22 to move downward to open the flow channel 10. When the on-off assembly 2 moves upward, the regulating seal 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 of the upper end of the push rod cone 22 abuts against the inner wall of the flow channel 10, and 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 to achieve a double-layer sealing effect. It is ensured 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, thereby ensuring the sealing performance and life.

[0038] Reference Figure 3The on-off assembly 2 comprises: an on-off diaphragm 21, whose outer wall is arranged on the inner wall of the connecting channel 11, and the on-off diaphragm 21 is arranged below the flow channel 10; the on-off diaphragm 21 is a flexible member, which is corrosion-resistant and high-temperature-resistant; the on-off diaphragm 21 is suitable for blocking the liquid in the connecting channel 11 from flowing downward to the lower piston 13; a push rod cone 22, which is arranged at the upper end of the on-off diaphragm 21, and the upper end is suitable for abutting 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 suitable for sealing the connecting channel 11 to cut off the flow channel 10. The top wall of the push rod cone 22 is provided with a receiving groove 23, the inner diameter of which is larger than the diameter of the diaphragm push rod 30; the diaphragm push rod 30 is suitable for being inserted into the receiving groove 23, and when the diaphragm push rod 30 moves downward, it is suitable for pushing 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 suitable for abutting 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.

[0039] Reference Figure 4 The regulating seal assembly 4 comprises: a guide piece 41, which is slidably arranged in the receiving groove 23 and is suitable for abutting against the diaphragm push rod 30; the guide piece 41 is suitable for sliding radially along the push rod cone 22; during the process of the diaphragm push rod 30 vertically inserting into the receiving groove 23, it is suitable for pushing the guide piece 41 to move in the direction of the sealing ring 42. The sealing ring 42 is lifted and lowered on the push rod cone 22 and is linked with the guide piece 41; when the guide piece 41 slides radially outward, the guide piece 41 is suitable for pushing the sealing ring 42 to move upward. Among them, when the diaphragm push rod 30 squeezes the guide piece 41 to move radially outward, the guide piece 41 is suitable for driving 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.

[0040] Reference Figure 4The upper end of the push rod cone 22 is provided with an annular groove 24, which is arranged on the outer ring of the receiving groove 23, and the sealing ring 42 is lifted and lowered in the annular groove 24. The push rod cone 22 is provided with a plurality of connecting grooves 25 along the radial direction, one connecting groove 25 corresponds to one guide piece 41, and the connecting groove 25 is connected with the annular groove 24; the horizontal section of the guide piece 41 is suitable for sliding in the connecting groove 25; the lower end of the sealing ring 42 is provided with a through hole corresponding to the connecting groove 25 along the radial direction, and the area of ​​the upper top wall of the through hole is larger than the area of ​​the lower bottom wall. When the water flow in the valve body 1 flows into the through hole, the water flow has an upward thrust on the sealing ring 42. The sealing ring 42 is suitable for opening and closing 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 suitable for sealing the connecting groove 25; wherein, when the diaphragm push rod 30 pushes each guide piece 41 to slide outward, the guide piece 41 pushes the sealing ring 42 to move upward; the sealing ring 42 is squeezed and moved downward to push the guide piece 41 to reset inward. When the sealing ring 42 is pushed and moved downward, the space capacity between the push rod cone 22 and the back-suction assembly 3 increases, thereby increasing the liquid volume in the water outlet pipe that can be sucked out by the upward deformation of the back-suction assembly 3 with negative pressure.

[0041] Reference Figure 6 The guide piece 41 is in an "L" shape, and a first slope 43 is provided on the inner side wall of the vertical section of the guide piece 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; when the diaphragm push rod 30 moves downward, the bottom wall of the diaphragm push rod 30 first abuts against the first slope 43, and the first slope 43 is suitable for guiding the diaphragm push rod 30 to slide into the receiving groove 23, and the first slope 43 is suitable for guiding the diaphragm push rod 30 to be coaxially arranged with the push rod cone 22. The horizontal section of the guide piece 41 is arranged below the sealing ring 42, and a second slope 44 is provided on its upper end, and the second slope 44 abuts against the bottom wall of the sealing ring 42; wherein, when the guide piece 41 slides radially outward, the second slope 44 is suitable for pushing the sealing ring 42 to move upward. When the sealing ring 42 is squeezed and moves downward, the ejector cone 22 cuts off the flow channel 10 , and the spring pushes the guide piece 41 , so that the guide piece 41 returns to the axial direction of the ejector cone 22 .

[0042] Furthermore, two guide posts 45 are vertically arranged on one side of the guide piece 41 away from the first slope 43; a groove matching the guide posts 45 is provided on the inner wall of the receiving groove 23, and the guide posts 45 are slidably arranged in the groove, and a spring is sleeved on the outer wall of each guide post 45, and the two ends of the spring are respectively in contact with the bottom wall of the groove and the side wall of the guide piece 41, and the spring is suitable for pushing the guide piece 41 to move in a direction away from the side wall of the receiving groove 23. The provision of the guide posts 45 improves the stability of each guide piece 41 when sliding radially along the push rod cone 22.

[0043] Reference Figure 2 , an upper piston 12 is provided in the connecting channel 11 for lifting and lowering, the upper piston 12 is provided above the back-suction assembly 3, and is suitable for abutting against the upper end of the back-suction assembly 3; a limit ring is provided in the valve body 1, the limit ring is provided between the back-suction assembly 3 and the upper piston 12, and the limit ring is provided circumferentially along the back-suction assembly 3, wherein when the back-suction assembly 3 is deformed upward, the limit ring is suitable for limiting the back-suction assembly 3 to avoid excessive deformation thereof. An air pipe 14 is provided at 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; wherein the air pipe 14 supplies air into the connecting channel 11 to push the upper piston 12 to move downward. When the upper piston 12 moves downward, it is suitable for pushing the back-suction assembly 3 to move downward synchronously, and the diaphragm push rod 30 of the back-suction assembly 3 is suitable for pushing the push rod cone 22 to move downward to open the flow channel 10. Furthermore, the washing assembly includes a back-suction diaphragm, the outer wall of which is arranged on the inner wall of the connecting channel 11, and the back-suction diaphragm is suitable for blocking the liquid and preventing it from flowing to the upper piston 12. The back-suction diaphragm is a flexible member. When the air pipe 14 exhausts air outward, the upper piston 12 is sucked upward by the negative pressure, and the upper piston 12 simultaneously drives the back-suction diaphragm to expand and deform upward. At this time, the lower piston 13 pushes the push rod to move upward to cut off the flow channel 10, and the space between the push rod cone 22 in the valve body 1 and the back-suction diaphragm is increased, so that the liquid in the water outlet pipe is sucked back by the negative pressure and adsorbed into the inside of the valve body 1.

[0044] Reference Figure 2 A lower piston 13 is provided on the bottom wall of the connecting channel 11 for lifting and lowering. The lower piston 13 is arranged below the on-off assembly 2 and is suitable for abutting against the on-off assembly 2. A return spring is provided at the lower end of the lower piston 13, and the return spring is suitable for pushing the lower piston 13 to move upward.

[0045] Some embodiments provide a tank delivery integrated suck-back valve, comprising: The valve body 1 has a flow channel 10 formed in the radial direction; The valve body 1 is provided with a connecting passage 11 along the axial direction, and the connecting passage 11 is communicated with the flow passage 10; A switch assembly 2, which is lifted and disposed in the connecting passage 11 and is suitable for opening and closing the connecting passage 11; The back-sucking component 3 is arranged in the connecting passage 11 and is arranged above the on-off component 2. An adjusting sealing component 4 is slidably arranged on the upper end of the on-off component 2; The regulating seal assembly 4 comprises: a guide sheet 41, which is slidably disposed in the receiving groove 23 and is suitable for abutting against the diaphragm top rod 30; A sealing ring 42, which is arranged on the ejector cone 22 and is linked with the guide piece 41; When the suction component 3 moves downward, the guide sheet 41 is suitable for guiding the diaphragm top rod 30 of the suction component 3 so that it abuts against the upper end of the on-off component 2 coaxially; When the on-off assembly 2 moves upward, the sealing ring 42 is pushed downward by the inner wall of the connecting passage 11 to improve the airtightness between the on-off assembly 2 and the connecting passage 11 .

[0046] Furthermore, an annular groove 24 is formed at the upper end of the push rod cone 22, and the annular groove 24 is arranged on the outer ring of the receiving groove 23, and the sealing ring 42 is lifted and lowered in the annular groove 24; The push rod cone 22 is provided with a plurality of communication grooves 25 along the radial direction, one communication groove 25 corresponds to one guide piece 41, and the communication groove 25 is connected with the annular groove 24; The lower end of the sealing ring 42 is provided with a through hole corresponding to the communicating groove 25 in the radial direction, and the sealing ring 42 is suitable for opening and closing the communicating groove 25; When the diaphragm push rod 30 pushes each guide sheet 41 to slide outward, the guide sheet 41 pushes the sealing ring 42 to move upward; When the sealing ring 42 is squeezed and moves downward, the through hole is communicated with the communicating groove 25, and water is suitable for pushing each guide piece 41 to return inward.

[0047] Some embodiments provide a method for operating a valve body, the method comprising: When the flow channel 10 needs to be opened, when the back-suction component 3 moves downward, the diaphragm push rod 30 is suitable for pushing the on-off component 2 to move downward to open the flow channel 10; The regulating seal assembly 4 is adapted to guide the diaphragm top rod 30 so as to abut against the upper end of the on-off assembly 2 coaxially; When the flow channel 10 needs to be closed, when the on-off component 2 moves upward, the regulating sealing component 4 is pushed downward by the inner wall of the connecting channel 11 to improve the air tightness between the on-off component 2 and the connecting channel 11; After the diaphragm push rod 30 is separated from the push rod cone 22, it continues to move upward, and the back-suction assembly 3 is suitable for forming a negative pressure in the valve body 1 to make the medium in the rear flow channel 10 of the valve body 1 flow back.

[0048] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0050] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A back-suction integrated valve for tank transportation, characterized in that: include: A valve body (1) having a flow channel (10) formed in a radial direction; The valve body (1) is provided with a connecting channel (11) along the axial direction, and the connecting channel (11) is in communication with the flow channel (10); An on-off assembly (2), which is arranged in a lifting manner in the connecting passage (11) and is suitable for opening and closing the connecting passage (11); A re-sucking assembly (3), which is arranged in a lifting manner in the connecting channel (11) and is arranged above the on-off assembly (2); An adjusting sealing component (4) which is slidably arranged on the upper end of the on-off component (2); Wherein, when the suction back assembly (3) moves downward, the regulating sealing assembly (4) is suitable for guiding the diaphragm top rod (30) of the suction back assembly (3) so that it abuts against the upper end of the on-off assembly (2) coaxially; When the on-off assembly (2) moves upward, the regulating 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).

2. The integrated back-suction valve for tank transportation according to claim 1, characterized in that: The on-off assembly (2) comprises: an on-off diaphragm (21), the outer wall of which is arranged on the inner wall of the connecting channel (11), and the on-off diaphragm (21) is arranged below the flow channel (10); A push rod cone (22), which is arranged at the upper end of the on-off diaphragm (21), and the upper end is suitable for abutting against the inner wall of the connecting channel (11); The top wall of the push rod cone (22) is provided with a receiving groove (23), and the inner diameter of the receiving groove (23) is larger than the diameter of the diaphragm push rod (30); When the push rod cone (22) moves upward, the inclined surface of its outer wall is suitable for abutting against the connecting channel (11) to seal the flow channel (10).

3. The integrated back-suction valve for tank transportation according to claim 2, characterized in that: The regulating seal assembly (4) comprises: a guide sheet (41) which is slidably disposed in the receiving groove (23) and is suitable for abutting against the diaphragm top rod (30); A sealing ring (42) which is arranged on the ejector cone (22) and is moved in a lifting manner and in linkage with the guide piece (41); When the diaphragm push rod (30) squeezes the guide sheet (41) to move radially outward, the guide sheet (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).

4. The integrated back-suction valve for tank transportation according to claim 3, characterized in that: An annular groove (24) is formed at the upper end of the push rod cone (22), the annular groove (24) being arranged on the outer ring of the receiving groove (23), the sealing ring (42) being arranged in the annular groove (24) for lifting, and the sealing ring (42) and the annular groove (24) being slidably sealed.

5. The integrated back-suction valve for tank transportation according to claim 4, characterized in that: The push rod cone (22) is provided with a plurality of connecting grooves (25) along the radial direction, one connecting groove (25) corresponds to one guide piece (41), and the connecting groove (25) is connected to the annular groove (24); A through hole corresponding to the communication groove (25) is radially opened at the lower end of the sealing ring (42), and the sealing ring (42) is suitable for opening and closing the communication groove (25); When the diaphragm push rod (30) pushes each guide sheet (41) to slide outward, the guide sheet (41) pushes the sealing ring (42) to move upward; When the sealing ring (42) is squeezed and moved downward, the sealing ring (42) is suitable for pushing the guide piece (41) to return and move inward.

6. The integrated back-suction valve for tank transportation according to claim 5, characterized in that: The guide piece (41) is in an "L" shape, and the inner side wall of the vertical section of the guide piece (41) is provided with a first slope (43), wherein the first slope (43) is suitable for guiding the diaphragm top rod (30) to move in the axial direction of the accommodating groove (23); The horizontal section of the guide piece (41) is arranged below the sealing ring (42), and a second slope (44) is arranged at the upper end thereof, wherein the second slope (44) abuts against the bottom wall of the sealing ring (42); When the guide piece (41) slides radially outward, the second slope (44) is suitable for pushing the sealing ring (42) to move upward.

7. The integrated back-suction valve for tank transportation according to claim 6, characterized in that: Two guide columns (45) are vertically arranged on one side of the guide sheet (41) away from the first slope (43); The inner wall of the accommodating groove (23) is provided with a groove adapted to the guide column (45), and the guide column (45) is slidably disposed in the groove. A spring is sleeved on the outer wall of each guide column (45), and two ends of the spring are respectively in contact with the bottom wall of the groove and the side wall of the guide piece (41), and the spring is suitable for pushing the guide piece (41) to move in a direction away from the side wall of the accommodating groove (23).

8. The integrated back-suction valve for tank transportation according to claim 1, characterized in that: An upper piston (12) is provided in the connecting channel (11) so as to be lifted and lowered, and the upper piston (12) is provided above the back-sucking assembly (3) and is suitable for abutting against the back-sucking 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 in communication with the connecting channel (11); The air pipe (14) delivers air into the connecting channel (11) to push the upper piston (12) to move downward.

9. The integrated back-suction valve for tank transportation according to claim 1, characterized in that: A lower piston (13) is provided on the inner bottom wall of the connecting channel (11) for lifting and lowering, and the lower piston (13) is provided below the on-off assembly (2) and is suitable for abutting against the on-off assembly (2); A return spring is provided at the lower end of the lower piston (13), and the return spring is suitable for pushing the lower piston (13) to move upward.

10. A back-suction integrated valve for tank transportation, characterized in that: include: A valve body (1) having a flow channel (10) formed in a radial direction; The valve body (1) is provided with a connecting channel (11) along the axial direction, and the connecting channel (11) is in communication with the flow channel (10); An on-off assembly (2), which is arranged in a lifting manner in the connecting passage (11) and is suitable for opening and closing the connecting passage (11); A back-sucking component (3) is arranged in a lifting manner in the connecting channel (11) and is arranged above the on-off component (2). An adjusting sealing component (4) which is slidably arranged on the upper end of the on-off component (2); The regulating seal assembly (4) comprises: a guide sheet (41) which is slidably disposed in the receiving groove (23) and is suitable for abutting against the diaphragm top rod (30); A sealing ring (42) which is arranged on the ejector cone (22) and is moved in a lifting manner and in linkage with the guide piece (41); When the suction component (3) moves downward, the guide sheet (41) is suitable for guiding the diaphragm top rod (30) of the suction component (3) so that it abuts against the upper end of the on-off component (2) coaxially; When the on-off assembly (2) moves upward, the sealing ring (42) is pushed downward by the inner wall of the connecting channel (11), thereby improving the airtightness between the on-off assembly (2) and the connecting channel (11).

11. The integrated back-suction valve for tank transportation according to claim 10, characterized in that: An annular groove (24) is formed at the upper end of the push rod cone (22), the annular groove (24) is arranged on the outer ring of the receiving groove (23), and the sealing ring (42) is lifted and lowered in the annular groove (24); The push rod cone (22) is provided with a plurality of connecting grooves (25) along the radial direction, one connecting groove (25) corresponds to one guide piece (41), and the connecting groove (25) is connected to the annular groove (24); A through hole corresponding to the communication groove (25) is radially opened at the lower end of the sealing ring (42), and the sealing ring (42) is suitable for opening and closing the communication groove (25); When the diaphragm push rod (30) pushes each guide sheet (41) to slide outward, the guide sheet (41) pushes the sealing ring (42) to move upward; The sealing ring (42) is pressed and moved downward to push the guide piece (41) to return and move inward.

12. A method for operating a valve body, characterized in that: Using the integrated back-suction valve for tank transportation according to any one of claims 1 to 11, the working method includes: When the flow channel (10) needs to be opened, when the suction assembly (3) moves downward, the diaphragm push rod (30) is suitable for pushing the on-off assembly (2) to move downward, so as to open the flow channel (10); The regulating seal assembly (4) is suitable for guiding the diaphragm top rod (30) so that it abuts against the upper end of the on-off assembly (2) coaxially; When the flow channel (10) needs to be closed, when the on-off component (2) moves upward, the regulating 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); After the diaphragm push rod (30) is detached from the push rod cone (22), it continues to move upwards, and the suction assembly (3) is suitable for forming a negative pressure in the valve body (1) to cause the medium in the rear flow channel (10) of the valve body (1) to flow back.

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