Fluid delivery valve and working method thereof

Abstract

The invention belongs to the technical field of engineering elements, and particularly relates to a fluid delivery valve and a working method thereof. The invention provides a delivery valve for fluid. The delivery valve comprises a valve body; the sealing assembly is arranged in the valve body in a lifting manner; the adjusting assembly is arranged on the outer wall of the sealing assembly in a sleeving manner and is in threaded fit with the valve body; the limiting piece is arranged in the valve body in a sliding mode and is suitable for limiting the sealing disc of the sealing assembly; when the sealing assembly moves downwards to the sealing valve body, the two limiting pieces are suitable for limiting the sealing disc from the two sides. The adjusting assembly spirally moves downwards until the lower end of the adjusting assembly abuts against the sealing disc, the adjusting assembly is reversely rotated, and the sealing assembly synchronously moves upwards along with the adjusting assembly to open the valve body; and through cooperation of the sealing assembly and the adjusting assembly, the sealing effect of the valve body is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering components, specifically relates to a check valve, and particularly relates to a conveying valve for fluids and its working method. Background Art

[0002] When fluid passes through a valve, the opening of the valve is suitable for adjusting the flow rate of the fluid. When the flow rate of the fluid is too fast or the pressure is too high, the impact force of the fluid on the sealing disc of the valve is relatively large, resulting in an increase in the upward movement stroke of the lifting column on the sealing disc, an increase in the axial force on the sealing device of the valve, and ultimately a reduction in the sealing performance of the valve and fluid leakage of the valve.

[0003] Therefore, how to solve the technical problem of excessive axial force on the sealing disc resulting in reduced sealing performance is a technical problem that urgently needs to be solved in this field.

[0004] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, the above description is not considered to constitute information on the prior art. Summary of the Invention

[0005] The embodiments of the present disclosure at least provide a conveying valve for fluids and its working method.

[0006] In a first aspect, the embodiments of the present disclosure provide a conveying valve for fluids, including: A valve body; A sealing assembly, which is arranged to move up and down within the valve body; An adjusting assembly, which is sleeved on the outer wall of the sealing assembly and is threadedly adapted to the valve body; A limiting member, which is slidably arranged within the valve body and is suitable for limiting the sealing disc of the sealing assembly; Wherein, when the sealing assembly moves downward to seal the valve body, the two limiting members are suitable for limiting the sealing disc from both sides; The adjusting assembly moves downward in a spiral shape. After the lower end of the adjusting assembly abuts against the sealing disc, the adjusting assembly is rotated in the reverse direction, and the sealing assembly moves upward synchronously with the adjusting assembly to open the valve body.

[0007] In an optional embodiment, the sealing assembly includes: a sealing disc, which is slidably sealed with the inner wall of the water outlet channel within the valve body; A lifting column, which is fixed on the sealing disc, and the lifting column is suitable for moving up and down within the valve body.

[0008] In an optional embodiment, a positioning ring is circumferentially fixed on the inner wall of the water outlet channel, and the sealing disc is suitable for abutting against the positioning ring.

[0009] In an alternative embodiment, the adjusting assembly includes: an outer sleeve, which is sleeved on the outer wall of the lifting column and whose outer wall is threadedly adapted to the valve body; An adjusting disc, which is fixed to the lower bottom of the outer sleeve and is disposed above the sealing disc; A rotating disc, which is fixed to the upper end of the outer sleeve.

[0010] In an alternative embodiment, a compression spring is sleeved on the outer wall of the lifting column, the lower end of the compression spring is fixed to the sealing disc, and the upper end of the compression spring abuts against the bottom wall of the adjusting disc.

[0011] In an alternative embodiment, a sealing ring is fixed to the inner wall of the water outlet channel, the sealing ring is disposed above the adjusting disc, and the adjusting disc is adapted to abut against the sealing ring.

[0012] In an alternative embodiment, a water outlet pipe is provided on the valve body, and the water inlet of the water outlet pipe is disposed above the positioning ring.

[0013] In an alternative embodiment, a slope is provided at one end of the limiting member close to the sealing disc, and the limiting member is disposed between the water inlet and the positioning ring.

[0014] In an alternative embodiment, an annular groove is formed in the bottom wall of the adjusting disc, the annular groove is disposed at the position where the adjusting disc is close to the lifting column, and the compression spring is adapted to contract in the annular groove.

[0015] In an alternative embodiment, the bottom wall of the sealing disc is arc-shaped, and when the sealing disc moves downward, it is adapted to push the limiting member to move outward.

[0016] In an alternative embodiment, the upper top wall of the adjusting disc is arc-shaped, and when the adjusting disc moves upward, it is adapted to push the limiting member to move outward.

[0017] Second, the embodiments of the present disclosure also provide a working method of a conveying valve, including: when it is necessary to seal the valve body, when the sealing assembly moves downward to seal the valve body, the two limiting members are adapted to limit the sealing disc from both sides to improve the sealing performance of the valve body; After the sealing assembly moves upward above the limiting member, the fluid in the valve body is adapted to push the sealing disc upward.

[0018] The beneficial effects of the present invention are as follows. The present invention provides a conveying valve for fluids. Through the arrangement of the sealing assembly and the adjusting assembly, when the valve body is closed, the sealing disc abuts against the positioning ring, and the limiting members limit the sealing disc from both sides to prevent it from moving upward, thereby improving the sealing effect of the valve body. When the valve body is in the open state, the cooperation between the adjusting disc and the sealing disc can slow down the impact force received by the sealing disc, thereby increasing the service life of the valve body. Other features and advantages of the present invention will be described in the following specification, and some of them will become obvious from the specification or can be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification, claims, and drawings.

[0019] To make the above objectives, features, and advantages of the present invention more obvious and understandable, specific preferred embodiments are hereby given, and detailed descriptions are provided in conjunction with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A perspective view of the conveying valve for fluids provided by an embodiment of the present disclosure; Figure 2 An internal cross-sectional view of the valve body provided by an embodiment of the present disclosure; Figure 3 A perspective view of the sealing assembly and the adjusting assembly provided by an embodiment of the present disclosure; Figure 4 A schematic diagram of the state where the adjusting disc abuts against the positioning ring provided by an embodiment of the present disclosure; Figure 5 A schematic diagram of the abutting state between the adjusting disc and the sealing disc provided by an embodiment of the present disclosure.

[0022] In the figures: 1. Valve body; 10. Water outlet channel; 11. Positioning ring; 12. Sealing ring; 13. Water outlet pipe; 2. Sealing assembly; 20. Sealing disc; 21. Lifting column; 22. Limit pin; 3. Adjusting assembly; 31. Outer sleeve; 32. Adjusting disc; 33. Rotating disc; 34. Compression spring; 35. Ring groove; 4. Limiting member; 40. Inclined surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] 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. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0024] In this document, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or a third component may be interposed between the first component and the second component. In addition, in the drawings, to effectively describe the technical content, the thickness of components may be exaggerated or reduced.

[0025] In this document, 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.

[0026] The terms used herein are only for describing specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a," "an," and "the" may also be intended to include the plural forms, unless clearly indicated otherwise herein. The terms "comprising," "including," and "having" are inclusive, and thus specify the presence of the specified 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 their combinations. The method steps, processes, and operations described herein should not be construed as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an order of performance. Additional or alternative steps may be employed.

[0027] As used herein, phrases such as "in one embodiment," "according to one embodiment," "in some embodiments," etc. generally refer to the fact that the specific feature, structure, or characteristic after the phrase may be included in at least one embodiment of the present disclosure. Thus, a specific feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," etc. are used "as an example, instance, or illustration." Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other embodiments, aspects, or designs. Instead, the use of the terms "example," "exemplary," etc. is intended to present concepts in a specific manner.

[0028] It has been found through research that the disadvantages of the prior art are as follows: When the fluid passes through the valve, the opening degree of the valve is suitable for adjusting the flow rate of the fluid. When the flow rate of the fluid is too fast or the pressure is too high, the impact force of the fluid on the sealing disc of the valve is relatively large, resulting in an increase in the upward movement stroke of the lifting column on the sealing disc, an increase in the axial force on the sealing device of the valve, and ultimately a reduction in the sealing performance of the valve, leading to fluid leakage of the valve.

[0029] Therefore, how to solve the technical problem of the reduction in sealing performance caused by excessive axial force on the sealing disc is a technical problem that urgently needs to be solved in this field.

[0030] Regarding the defects existing in the above solutions, they are all 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 disclosure in this article for the above problems should all be the contributions made by the inventor to the present disclosure during the process of the present disclosure.

[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] The following will describe in detail some embodiments of the present invention with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0033] As Figures 1 to 5 shown, in some embodiments, a fluid delivery valve is provided, including: a valve body 1; both ends of the valve body 1 are respectively communicated with pipelines, and the fluid passes through the left side of the valve body 1 and flows to the pipeline on the right side after passing through the valve body 1.

[0034] A sealing assembly 2, which is arranged to be lifted and lowered within the valve body 1; when the sealing disc 20 moves downward to abut against the positioning ring 11, the sealing assembly 2 is adapted to seal the valve body 1 to prevent the fluid in the pipeline from passing through the valve body 1. An adjusting assembly 3, which is sleeved on the outer wall of the sealing assembly 2 and is threadedly adapted to the valve body 1; the adjusting assembly 3 is adapted to rotate circumferentially relative to the valve body 1. A limiting member 4, which is slidably arranged within the valve body 1 and is adapted to limit the sealing disc 20 of the sealing assembly 2; a fixing block is fixed to the outer wall of the valve body 1, the interior of the fixing block is hollow, and the limiting member 4 is slidably arranged within the fixing block; optionally, a liquid inlet pipe is communicated with the side wall of the fixing block, and the liquid inlet pipe is adapted to convey caustic soda solution into the fixing block. When the limiting member 4 is pushed to move into the fixing block, the caustic soda solution within the fixing block is adapted to flow into the valve body 1. A flow channel is formed along the length direction of the limiting member 4, a check valve is arranged within the flow channel, and the caustic soda solution within the flow channel is adapted to flow into the water outlet channel 10 after passing through the check valve. The caustic soda solution within the fixing block always remains in an atmospheric pressure state. When the limiting member 4 is squeezed to move into the fixing block, the limiting member 4 squeezes the caustic soda solution within the fixing block, causing it to flow into the water outlet channel 10 through the check valve. Wherein, when the sealing assembly 2 moves downward to seal the valve body 1, the two limiting members 4 are adapted to limit the sealing disc 20 from both sides; the arrangement of the limiting member 4 avoids the situation where the sealing disc 20 is pushed upward by the fluid within the valve body 1, improving the sealing effect between the sealing disc 20 and the positioning ring 11. The adjusting assembly 3 moves downward in a spiral shape. After the lower end of the adjusting assembly 3 abuts against the sealing disc 20, at this time, the sealing assembly 2 and the adjusting assembly 3 are linked, that is, when the outer sleeve 31 moves upward in a spiral manner, it can drive the lifting column 21 to move upward synchronously. Rotating the adjusting assembly 3 in the reverse direction, the sealing assembly 2 moves upward synchronously with the adjusting assembly 3 to open the valve body 1. When the sealing disc 20 is separated from the positioning ring 11, the water flow within the valve body 1 is adapted to push the sealing disc 20 to move up and down relative to the adjusting disc 32, so as to achieve the effect of automatically adjusting the fluid pressure within the valve body 1. When the sealing disc 20 abuts against the positioning ring 11, at this time the valve body 1 is closed, and the limiting member 4 conveys caustic soda solution into the water outlet channel 10, and the caustic soda solution neutralizes the residual acidic fluid within the valve body 1 to reduce the corrosion of the pickling fluid on the adjusting disc 32 and the compression spring 34.

[0035] Reference appendix Figure 2, the sealing assembly 2 includes: a sealing disk 20 which is in sliding seal with the inner wall of the water outlet passage 10 in the valve body 1; the sealing disk 20 is adapted to move vertically in the water outlet passage 10; a lifting column 21 which is fixed on the sealing disk 20 and is adapted to move up and down in the valve body 1. The upper end of the lifting column 21 protrudes from the adjusting assembly 3, and the lifting column 21 is adapted to move vertically relative to the adjusting assembly 3. Optionally, a receiving groove is radially formed in the side wall of the lifting column 21, and a limiting pin 22 is slidably arranged in the receiving groove. The limiting pin 22 abuts against the inner wall of the outer sleeve 31. When the outer sleeve 31 moves downward in a spiral shape until the adjusting disk 32 abuts against the sealing disk 20, the limiting pin 22 protrudes from the receiving groove and abuts against the upper surface of the rotating disk 33. At this time, when the outer sleeve 31 moves upward in a spiral shape, it is adapted to drive the lifting column 21 to move upward synchronously.

[0036] Further, a positioning ring 11 is circumferentially fixed on the inner wall of the water outlet passage 10, and the sealing disk 20 is adapted to abut against the positioning ring 11. The inner diameter of the positioning ring 11 is smaller than the diameter of the sealing disk 20. The downward movement of the lifting column 21 drives the sealing disk 20 to move downward until the sealing disk 20 abuts against the positioning ring 11, and the sealing disk 20 is adapted to seal the water outlet passage 10.

[0037] Reference appendix Figure 2 , the adjusting assembly 3 includes: an outer sleeve 31 which is sleeved on the outer wall of the lifting column 21. The outer sleeve 31 is in sliding seal with the lifting column 21, and its outer wall is threadedly adapted to the valve body 1; the outer sleeve 31 is adapted to move upward or downward in a spiral shape relative to the valve body 1. An adjusting disk 32 which is fixed at the lower bottom of the outer sleeve 31 and is arranged above the sealing disk 20; the adjusting disk 32 is adapted to abut against the sealing disk 20. A rotating disk 33 which is fixed at the upper end of the outer sleeve 31. When the rotating disk 33 is rotated, it is adapted to drive the outer sleeve 31 to rotate in a spiral shape, and the rotating disk 33 is arranged at the upper end of the valve body 1.

[0038] A compression spring 34 is sleeved on the outer wall of the lifting column 21. The lower end of the compression spring 34 is fixed on the sealing disk 20, and the upper end of the compression spring 34 abuts against the bottom wall of the adjusting disk 32. A ring groove 35 is formed in the bottom wall of the adjusting disk 32. The ring groove 35 is arranged at the position where the adjusting disk 32 is close to the lifting column 21, and the compression spring 34 is adapted to contract in the ring groove 35. When the sealing disk 20 and the adjusting disk 32 abut against each other, the compression spring 34 is adapted to contract in the ring groove 35. At this time, when the outer sleeve 31 drives the adjusting disk 32 to move upward, during the upward movement of the adjusting disk 32, it is adapted to push the two limiting members 4 to move outward, and the sealing disk 20 and the lifting column 21 move upward synchronously with the adjusting disk 32.

[0039] Further, in order to improve the sealing performance of the valve body 1, a sealing ring 12 is fixed to the inner wall of the water outlet channel 10. The inner ring of the sealing ring 12 abuts against the outer wall of the outer sleeve 31. The outer wall of the outer sleeve 31 at the contact position with the sealing ring 12 is smooth. The sealing ring 12 is arranged above the adjusting disc 32, and the adjusting disc 32 is adapted to abut against the sealing ring 12. When the adjusting disc 32 moves upward to abut against the sealing ring 12, the sealing ring 12 is adapted to limit the adjusting disc 32.

[0040] Further, a water outlet pipe 13 is arranged on the valve body 1. The water inlet of the water outlet pipe 13 is arranged above the positioning ring 11. The water outlet of the water outlet pipe 13 is arranged on the right side of the water outlet channel 10.

[0041] Reference attachment Figure 3 , a slope 40 is arranged at one end of the limiting member 4 close to the sealing disc 20. The limiting member 4 is arranged between the water inlet and the positioning ring 11. When the sealing disc 20 moves downward to abut against the slope 40, and the sealing disc 20 continues to move downward, it is adapted to push the limiting member 4 to contract into the fixing block. At the same time, the lye in the fixing block is adapted to flow into the water outlet channel 10, and the lye can neutralize the acidity in the water outlet channel 10.

[0042] Further, the bottom wall of the sealing disc 20 is arc-shaped. When the sealing disc 20 moves downward, it is adapted to push the limiting member 4 to move outward. The upper top wall of the adjusting disc 32 is arc-shaped. When the adjusting disc 32 moves upward, it is adapted to push the limiting member 4 to move outward. After the adjusting disc 32 abuts against the sealing disc 20, when the adjusting disc 32 moves upward, the sealing disc 20 moves upward synchronously. The adjusting disc 32 is adapted to push the two limiting members 4 to contract into the fixing block, so that the sealing disc 20 moves above the limiting member 4.

[0043] Some embodiments provide a working method of a conveying valve, including: When the valve body 1 needs to be sealed, when the sealing assembly 2 moves downward to seal the valve body 1, the two limiting members 4 are adapted to limit the sealing disc 20 from both sides to improve the sealing performance of the valve body 1; After the sealing assembly 2 moves upward above the limiting member 4, the fluid in the valve body 1 is adapted to push the sealing disc 20 to move upward.

[0044] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It 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. Therefore, it should not be construed as a limitation to the present invention. In addition, terms such as "first", "second" and other numerical terms used herein do not imply an order or sequence unless explicitly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer or section discussed above may be referred to as the second element, component, region, layer or section.

[0046] Spatially relative terms, such as "inner", "outer", "below", "beneath", "lower", "above", "upper", etc., may be used herein to facilitate describing the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientation depicted in the figures, spatially relative terms are intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is turned over, an element described as "below" or "beneath" another element or feature will be oriented "above" the other element or feature. Thus, the exemplary term "below" can encompass both an above and below orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein are to be interpreted accordingly.

[0047] In the above discussion, unless otherwise stated, when used to describe a numerical value, terms such as "about", "approximately", "substantially", etc. mean a variation of + / −10% of that value.

[0048] Based on the above inspiration from the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A fluid delivery valve, characterized in that: include: Valve body (1); A sealing assembly (2) which is arranged in a lifting manner inside the valve body (1); An adjusting component (3) which is sleeved on the outer wall of the sealing component (2) and is threadably matched with the valve body (1); A limiting member (4) which is slidably disposed in the valve body (1) and is adapted to limit the sealing disk (20) of the sealing assembly (2); Wherein, when the sealing assembly (2) moves downward to the sealing valve body (1), the two limiting members (4) are suitable for limiting the sealing disk (20) from both sides; After the regulating component (3) moves spirally downward until the lower end of the regulating component (3) abuts against the sealing disk (20), the regulating component (3) is rotated in the reverse direction, and the sealing component (2) moves upward synchronously with the regulating component (3) to open the valve body (1).

2. The fluid delivery valve according to claim 1, characterized in that: The sealing assembly (2) comprises: A sealing disk (20) which is slidably sealed with an inner wall of the water outlet channel (10) in the valve body (1); A lifting column (21) is fixed on the sealing disc (20) and is suitable for moving up and down in the valve body (1).

3. The fluid delivery valve according to claim 2, characterized in that: A positioning ring (11) is fixed circumferentially to the inner wall of the water outlet channel (10), and the sealing disc (20) is suitable for abutting against the positioning ring (11).

4. The fluid delivery valve according to claim 3, characterized in that: The regulating assembly (3) comprises: an outer sleeve (31) which is sleeved on the outer wall of the lifting column (21), and the outer wall of which is threadably matched with the valve body (1); An adjusting disk (32) fixed to the lower bottom of the outer sleeve (31) and arranged above the sealing disk (20); A rotating disk (33) is fixed to the upper end of the outer sleeve (31).

5. The fluid delivery valve according to claim 4, characterized in that: A compression spring (34) is sleeved on the outer wall of the lifting column (21), the lower end of the compression spring (34) is fixed on the sealing disk (20), and the upper end of the compression spring (34) abuts against the bottom wall of the adjustment disk (32).

6. The fluid delivery valve according to claim 5, characterized in that: A sealing ring (12) is fixed to the inner wall of the water outlet channel (10); the sealing ring (12) is arranged above the regulating disk (32); and the regulating disk (32) is suitable for abutting against the sealing ring (12).

7. The fluid delivery valve according to claim 6, characterized in that: The valve body (1) is provided with a water outlet pipe (13), and the water inlet of the water outlet pipe (13) is arranged above the positioning ring (11).

8. The fluid delivery valve according to claim 7, characterized in that: An inclined surface (40) is provided at one end of the limiting member (4) close to the sealing disk (20), and the limiting member (4) is arranged between the positioning rings (11) of the water inlet box.

9. The fluid delivery valve according to claim 8, characterized in that: The bottom wall of the adjustment disk (32) is provided with an annular groove (35), the annular groove (35) being arranged at a position of the adjustment disk (32) close to the lifting column (21), and the compression spring (34) is adapted to be contracted in the annular groove (35).

10. The fluid delivery valve according to claim 9, characterized in that: The bottom wall of the sealing disk (20) is in an arc shape, and is suitable for pushing the limiting member (4) to move outwards when the sealing disk (20) moves downwards.

11. The fluid delivery valve according to claim 10, characterized in that: The upper top wall of the adjusting disk (32) is in an arc shape, and is suitable for pushing the limiting member (4) to move outward when the adjusting disk (32) moves upward.

12. A method for operating a delivery valve, using the fluid delivery valve according to any one of claims 1 to 10, characterized in that: include: When the valve body (1) needs to be sealed, the sealing assembly (2) moves downward to seal the valve body (1), and the two limiting members (4) are suitable for limiting the sealing disk (20) from both sides to improve the sealing performance of the valve body (1); After the sealing assembly (2) moves upward to above the stopper (4), the fluid in the valve body (1) is suitable for pushing the sealing disc (20) to move upward.

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