A one-way valve for an ultra-high pressure isostatic press

Abstract

The utility model provides an ultra -high pressure isostatic press's check valve, including valve body, be provided with liquid inlet channel and liquid outlet channel in the valve body, still include valve core and sealing washer, be provided with the taper surface for with valve core cooperation in the valve body, sealing washer installs in the bottom of taper surface, valve core includes plugging mechanism and elastic part, be provided with through -hole on plugging mechanism, plugging mechanism passes through elastic part with valve body connection, the diameter of elastic part is greater than the diameter of liquid outlet channel liquid inlet, and elastic part installs in the bottom of plugging mechanism, liquid inlet channel passes through through -hole with liquid outlet channel intercommunication, the utility model discloses can solve the problem that valve core in the prior art under the action of high pressure and valve body taper face hard seal can lead to permanent deformation of sealing surface, thereby losing the sealing effect problem.

Description

Technical Field

[0001] This utility model relates to the field of ultra-high pressure hydraulic system technology, specifically a one-way valve for an ultra-high pressure isostatic press. Background Technology

[0002] As an advanced forming equipment that integrates high pressure and temperature control functions, the warm isostatic press is widely used in precision forming and processing of ceramics, metal powders, composite materials and other fields. Its core principle is to apply uniform pressure to the workpiece in a closed cavity through a high-pressure medium (usually oil or gas), and with precise temperature control, to achieve densification and performance optimization of the workpiece.

[0003] Traditional check valves for thermal isostatic presses use a conical hard seal. For example, utility model CN211715439U discloses a check valve for an ultra-high pressure thermal isostatic press (hereinafter referred to as the prior art), which includes a changeover connector, a valve body, a conical spring seat, a movable spring seat, and a steel ball. The lower part of the changeover connector is fixedly sleeved on the upper part of the valve body. The changeover connector presses and fixes the conical spring seat in the upper part of the valve body. The conical spring seat is connected to the changeover connector and the valve body respectively by a conical seal. A valve cavity is formed between the conical spring seat and the valve body. The movable spring seat and the steel ball are movablely disposed in the valve cavity. The movable spring seat is elastically connected to the lower end of the conical spring seat by a compression spring. The lower surface of the movable spring seat elastically abuts against the upper surface of the steel ball. The lower surface of the steel ball abuts against the valve port at the bottom of the valve cavity in a releasable seal. The changeover connector and the cylinder body of the hydraulic cylinder, as well as the oil pipe connector and the valve body, are all connected by a conical seal.

[0004] While existing technologies employ conical hard seals to achieve a certain sealing effect, prolonged use under ultra-high pressure can cause permanent deformation of the sealing surface between the valve core and the valve body under high pressure, resulting in a loss of sealing effectiveness. This leads to a shortened valve body lifespan, requiring frequent replacements, resulting in high maintenance costs and impacting the overall reliability and production efficiency of the equipment. Utility Model Content

[0005] The purpose of this utility model is to provide a one-way valve for an ultra-high pressure isostatic press, which can solve the problem in the prior art where the valve core hard seals with the valve body conical surface under high pressure, resulting in permanent deformation of the sealing surface and loss of sealing effect.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A one-way valve for an ultra-high pressure isostatic press includes a valve body, wherein the valve body is provided with an inlet flow channel and an outlet flow channel, and also includes a valve core and a sealing gasket. The valve body is provided with a conical surface for cooperating with the valve core, and the sealing gasket is installed at the bottom end of the conical surface. The valve core includes a blocking mechanism and an elastic element. The blocking mechanism is provided with a through hole. The blocking mechanism is connected to the valve body through the elastic element. The diameter of the elastic element is larger than the diameter of the liquid outlet inlet. The elastic element is installed at the bottom end of the blocking mechanism. The inlet channel is connected to the outlet channel through the through hole.

[0007] Preferably, the sealing mechanism includes a plugging ball and a movable seat. The movable seat is slidably connected to the valve body and is connected to the valve body by a spring. The through hole is provided on the movable seat, and a limiting groove for limiting the plugging ball is provided at one end of the movable seat near the liquid inlet channel.

[0008] Preferably, the movable seat is provided with a plurality of liquid inlet holes communicating with the through hole, and the plurality of liquid inlet holes are arranged at equal intervals along the circumference of the movable seat.

[0009] Preferably, the liquid inlet hole is inclined toward the axis of the through hole.

[0010] Preferably, the bottom end of the movable seat and the valve body are provided with slots for limiting the elastic element.

[0011] Preferably, the sealing gasket is provided with an arc-shaped groove for cooperating with the ball stopper.

[0012] Preferably, a bellows is installed between the movable seat and the valve body, and the bellows is disposed between the elastic element and the liquid outlet channel.

[0013] Preferably, the through hole is connected to the liquid outlet channel through the corrugated pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In this invention, when the valve body is under high temperature and high pressure conditions, the sealing gasket first cooperates with the sealing mechanism to achieve sealing; during regular maintenance and inspection, worn and deformed sealing gaskets can be easily and quickly identified and replaced. Furthermore, even if the sealing gasket is damaged but not replaced in time, the sealing mechanism can still play a sealing role again by cooperating with the conical surface. The sealing gasket and the conical surface form a collaborative mechanism with the sealing gasket providing elastic sealing as the main component and the valve body conical surface providing auxiliary positioning. This not only solves the problem of permanent deformation of traditional hard seals, but also avoids the equipment risk after the failure of a single elastic seal. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of this utility model.

[0018] Figure 3 This is a schematic diagram showing the connection relationship between the sealing mechanism and the elastic element in this utility model.

[0019] The attached diagram lists the components represented by each number as follows: 101-Valve body, 102-Inlet flow channel, 103-Outlet flow channel, 104-Valve core, 105-Sealing gasket, 106-Blocking mechanism, 107-Elastic element, 108-Through hole, 109-Blocking ball, 110-Moving seat, 111-Limiting groove, 112-Inlet hole, 113-Card groove, 114-Conical surface, 115-Bellbell. Detailed Implementation

[0020] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0021] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model 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. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0024] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] See Figures 1-3 This embodiment discloses a one-way valve, specifically a one-way valve for an ultra-high pressure isostatic press, including a valve body 101, wherein the valve body 101 is provided with an inlet flow channel 102 and an outlet flow channel 103, and also includes a valve core 104 and a sealing gasket 105. The valve body 101 is provided with a conical surface 114 for cooperating with the valve core 104, and the sealing gasket 105 is installed at the bottom end of the conical surface 114. The valve core 104 includes a blocking mechanism 106 and an elastic element 107. The blocking mechanism 106 is provided with a through hole 108. The blocking mechanism 106 is connected to the valve body 101 through the elastic element 107. The diameter of the elastic element 107 is larger than the diameter of the liquid inlet of the liquid outlet channel 103. The inlet channel 102 is connected to the outlet channel 103 through the through hole 108.

[0028] In this embodiment, when the valve body 101 is under high temperature and high pressure conditions, the sealing gasket 105 first cooperates with the sealing mechanism 106 to achieve a seal. During regular maintenance and inspection, worn and deformed sealing gaskets 105 can be easily and quickly identified and replaced. Furthermore, if the sealing gasket 105 is damaged but not replaced in time, the sealing mechanism 106 can still perform a sealing function again by cooperating with the conical surface 114, preventing pressure leakage or one-way pressure increase in the valve body 101 during use, avoiding a series of production problems such as downtime, and greatly increasing the reliability of the equipment. This overcomes the shortcomings of the existing technology where the one-way valve core 104 undergoes permanent deformation, loses its sealing effect, and has a short lifespan and is easily damaged. Through the cooperation of the conical surface 114 and the sealing gasket 105, the reliability of the valve body 101's seal under ultra-high pressure and variable temperature conditions is precisely optimized. Under normal working conditions with the sealing gasket 105 intact, the sealing gasket 105 and the conical surface 114 form a collaborative mechanism with the sealing gasket 105 providing the primary elastic seal and the conical surface 114 of the valve body 101 providing auxiliary positioning. This solves the problem of permanent deformation of traditional hard seals and avoids the equipment risk caused by the failure of a single elastic seal. By installing the elastic element 107 at the bottom of the sealing mechanism 106, and with the diameter of the elastic element 107 being larger than the diameter of the inlet of the liquid outlet channel 103, the elastic element 107 can avoid the main medium flow channel within the through hole 108. When the liquid enters the liquid outlet channel 103 through the through hole 108, it will not directly impact the elastic element 107, reducing the contact area between the medium and the elastic element 107. This reduces the scouring and chemical corrosion of the elastic element 107 by the high-pressure medium, solves the problem of easy damage when the traditional elastic element 107 is built into the through hole 108, and extends the service life of the elastic element 107.

[0029] In some embodiments, the sealing mechanism 106 includes a plug ball 109 and a movable seat 110. The movable seat 110 is slidably connected to the valve body 101 and is connected to the valve body 101 by a spring. The through hole 108 is provided on the movable seat 110, and a limiting groove 111 for limiting the plug ball 109 is provided at one end of the movable seat 110 near the liquid inlet channel 102. When the pressure in the inlet channel 102 is lower than the preset threshold, the spring's thrust causes the movable seat 110 to drive the plug ball 109 to press tightly against the sealing gasket 105, keeping the channel closed; ensuring that there is no medium leakage during low pressure or shutdown, meeting the sealing requirements; in this embodiment, when the inlet pressure in the inlet channel 102 increases, the medium pressure is transmitted to the spring through the movable seat 110, pushing the movable seat 110 to slide along the valve body 101 and compress the spring, while simultaneously driving the plug ball 109 away from the sealing gasket 105, so that the inlet channel 102 can be connected to the outlet channel 103 through the through hole 108, and the medium can flow from the inlet channel 102 into the outlet channel 103 through the through hole 108 of the movable seat 110, achieving unidirectional flow.

[0030] In some embodiments, the movable seat 110 is provided with a plurality of liquid inlet holes 112 communicating with the through hole 108, and the plurality of liquid inlet holes 112 are equally spaced along the circumferential direction of the movable seat 110. In this embodiment, the through hole 108 provides a uniformly distributed multi-point liquid inlet path, optimizes the medium flow field, reduces pressure loss, and ensures the flow efficiency under high pressure and high flow conditions; it also balances the force on the movable seat 110, disperses the scouring and wear of the medium on the movable seat 110, and ensures its smooth sliding.

[0031] In some embodiments, the inlet hole 112 is inclined toward the axis of the through hole 108. In this embodiment, the medium flow from different inlet holes 112 will smoothly enter the through hole 108 along the inclined path and merge into the main flow. By making the inlet hole 112 inclined, it is possible to avoid the medium from multiple points colliding with each other when entering the through hole 108, which can greatly reduce eddies and backflow.

[0032] In some embodiments, the bottom end of the movable seat 110 and the valve body 101 are provided with a slot 113 for limiting the elastic element 107. In this embodiment, by providing the slot 113, the elastic element 107 can be limited and guided, restricting the axial displacement and radial twisting of the elastic element 107, preventing the elastic element 107 from falling off, and reducing maintenance risks; in this embodiment, the elastic element 107 is a conventional spring structure in the prior art.

[0033] In some embodiments, the sealing gasket 105 is provided with an arc-shaped groove for engaging with the ball plug 109. In this embodiment, providing an arc-shaped groove on the sealing gasket 105 can further increase the contact area between the sealing gasket 105 and the arc-shaped groove, improving the reliability of the high-pressure seal; and the arc-shaped groove can also guide the ball plug 109 to be precisely aligned, avoiding seal misalignment failure.

[0034] In some embodiments, a bellows 115 is installed between the movable seat 110 and the valve body 101, and the bellows 115 is disposed between the elastic element 107 and the outlet channel 103. In this embodiment, the bellows 115 is made of a corrosion-resistant, high-strength elastic material. One end of the bellows 115 is connected to the movable seat 110, and the other end is fixed to the valve body 101, forming a closed isolation space. When the medium flows from the inlet channel 102 into the outlet channel 103 through the inlet hole 112 and the through hole 108, the bellows 115 blocks the path of the medium into the installation area of ​​the elastic element 107, preventing the high-pressure medium from directly scouring the elastic element 107 and preventing the chemical components in the medium from corroding the elastic element 107. The bellows 115 has axial expansion and contraction capabilities. When the movable seat 110 slides inside the valve body 101, the bellows 115 can be compressed or extended accordingly, ensuring the continuity of the dynamic seal.

[0035] In some embodiments, the through hole 108 is connected to the liquid outlet channel 103 via the bellows 115. When there is a gap inside the valve body 101 that is not connected to the main flow path, the liquid is prone to stagnate in the gap; the two ends of the bellows 115 are respectively sealed to the outlet of the through hole 108 and the inlet of the liquid outlet channel 103, forming a gapless continuous flow channel; after the liquid flows out from the through hole 108, it flows entirely inside the bellows 115 and does not remain in the dead corners of the valve body 101.

[0036] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A one-way valve of an ultra-high pressure isostatic press, comprising a valve body (101), a liquid inlet flow channel (102) and a liquid outlet flow channel (103) are arranged in the valve body (101), characterized in that: It also includes a valve core (104) and a sealing gasket (105). The valve body (101) is provided with a conical surface (114) for cooperating with the valve core (104), and the sealing gasket (105) is installed at the bottom end of the conical surface (114). The valve core (104) includes a blocking mechanism (106) and an elastic element (107). The blocking mechanism (106) is provided with a through hole (108). The blocking mechanism (106) is connected to the valve body (101) through the elastic element (107). The diameter of the elastic element (107) is larger than the diameter of the inlet of the liquid outlet channel (103). The elastic element (107) is installed at the bottom end of the blocking mechanism (106). The inlet channel (102) is connected to the outlet channel (103) through the through hole (108).

2. A one-way valve for an ultra-high pressure autoclave as defined in claim 1, characterized in that: The sealing mechanism (106) includes a plug ball (109) and a movable seat (110). The movable seat (110) is slidably connected to the valve body (101). The movable seat (110) is connected to the valve body (101) by a spring. The through hole (108) is provided on the movable seat (110). The movable seat (110) is provided with a limiting groove (111) for limiting the plug ball (109) at one end near the liquid inlet channel (102).

3. A one-way valve for an ultra-high pressure isostatic press according to claim 2, wherein: The movable seat (110) is provided with a plurality of liquid inlet holes (112) that communicate with the through hole (108), and the plurality of liquid inlet holes (112) are arranged at equal intervals along the circumferential direction of the movable seat (110).

4. A one-way valve for an ultra-high pressure-temperature isostatic press according to claim 3, characterized in that: The liquid inlet hole (112) is inclined toward the axis of the through hole (108).

5. The one-way valve of an ultra-high pressure isostatic press according to claim 3, characterized in that: The bottom of the movable seat (110) and the valve body (101) are provided with a slot (113) for limiting the elastic element (107).

6. A one-way valve for an ultra-high pressure autoclave as defined in claim 2, characterized in that: The sealing gasket (105) is provided with an arc-shaped groove for cooperating with the ball stopper (109).

7. A one-way valve for an ultra-high pressure autoclave as defined in claim 2, characterized in that: A bellows (115) is installed between the movable seat (110) and the valve body (101), and the bellows (115) is disposed between the elastic element (107) and the liquid outlet channel (103).

8. A one-way valve for an ultra-high pressure isostatic press according to claim 7, wherein: The through hole (108) is connected to the liquid outlet channel (103) through the bellows (115).

Images