Split valve seat and valve

Abstract

The application discloses a split type valve seat and valve, which comprises an end valve seat, a guide sleeve and a matching part, the end valve seat is provided with a first end face and a second end face, the end valve seat is internally provided with a first liquid passing hole, the first liquid passing hole penetrates the first end face and the second end face, the guide sleeve is provided with a third end face, a fourth end face and a first outer circumferential face, the guide sleeve is internally provided with a second liquid passing hole and a third liquid passing hole, the second liquid passing hole penetrates the third end face and the fourth end face, the second liquid passing hole is communicated with the first liquid passing hole, the third liquid passing hole penetrates the first outer circumferential face and the second liquid passing hole so that the second liquid passing hole is communicated with the outside of the guide sleeve, and the matching part is abutted with the fourth end face so that the formed valve seat has a two-position two-way function or a two-position three-way function. The split type valve seat and valve of the embodiment of the application divide the whole valve seat into three parts to process respectively, avoid the occurrence of processing difficulties such as inclined holes and blind holes, reduce processing difficulty and processing cost, and improve the reliability of the valve seat.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve seat hard sealing, in particular to a mining water-based split type valve seat and a valve applying the valve seat. BACKGROUND

[0002] Unlike oil-based medium, water-based medium has the characteristics of low viscosity, large inertia and easy corrosion. The valve core applied in the water-based field needs to have the characteristics of wear resistance, corrosion resistance, high hardness, high machining precision and high impact resistance. The hard sealing valve core realizes the on-off of the liquid at both ends of the valve seat through the close contact of the valve seat and the closing piece.

[0003] In the related art, the valve seat for water-based medium usually adopts ceramic material with high hardness, wear resistance, corrosion resistance, interference fit and reliable sealing performance. Due to the characteristics of high brittleness, low fracture toughness and high elastic modulus of ceramic material, it is extremely difficult to process the ceramic valve seat with inclined holes and blind holes at the end, and the processing cost is high. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0005] To this end, the embodiment of the present application provides a split type valve seat convenient to process.

[0006] The embodiment of the present application also provides a valve applying the above split type valve seat.

[0007] The split type valve seat of the embodiment of the present application comprises an end valve seat, a guide sleeve and a matching part, the end valve seat has a first end face and a second end face, the end valve seat is provided with a first liquid passing hole, the first liquid passing hole penetrates the first end face and the second end face, the guide sleeve has a third end face, a fourth end face and a first outer peripheral surface, the third end face and the second end face are in abutment, the guide sleeve is provided with a second liquid passing hole and a third liquid passing hole, the second liquid passing hole penetrates the third end face and the fourth end face, and the second liquid passing hole communicates with the first liquid passing hole, the third liquid passing hole penetrates the first outer peripheral surface and the second liquid passing hole to make the second liquid passing hole communicate with the outside of the guide sleeve, and the matching part is in abutment with the fourth end face to make the formed valve seat have two-position two-way function or two-position three-way function.

[0008] The split type valve seat of the embodiment of the present application divides the whole valve seat into three parts for processing, avoids the occurrence of processing difficulties such as inclined holes and blind holes, reduces the processing difficulty and processing cost, and improves the reliability of the valve seat.

[0009] In some embodiments, the guide sleeve is provided with a first through hole in communication with the first liquid passing hole, the first end face is provided with a first opening at the boundary between the first liquid passing hole and the first end face, the split valve seat further comprises a top rod and a first closure, the top rod has a first end, the top rod is arranged in the first through hole and can slide along the extension direction of the first through hole, the first closure is connected with the first end, and the first closure is arranged outside the end valve seat and is adapted to open and close the first opening along with the sliding of the top rod.

[0010] In some embodiments, the fitting part is provided with a fifth end face and a sixth end face, the fitting part is provided with a fourth liquid passing hole penetrating through the fifth end face and the sixth end face, the fifth end face and the fourth end face are in abutment, and the fourth liquid passing hole and the second liquid passing hole are in communication, so that the formed valve seat has a two-position three-way function.

[0011] In some embodiments, the split valve seat further comprises a second closure, the top rod has a second end, the second closure is connected with the second end, the sixth end face is provided with a second opening at the boundary between the fourth liquid passing hole and the sixth end face, and the second closure is arranged outside the fitting part and is adapted to open and close the second opening along with the sliding of the top rod.

[0012] In some embodiments, the fitting part is provided with a fifth end face, the fifth end face is in abutment with the fourth end face and blocks the second liquid passing hole, so that the formed valve seat has a two-position two-way function, the fitting part is provided with a second through hole in communication with the first through hole and adapted for the top rod to pass through.

[0013] In some embodiments, the first opening is a round opening, the first closure is provided with a first spherical surface, and the first opening is provided with a chamfer matched with the first spherical surface.

[0014] In some embodiments, the second opening is a round opening, the second closure is provided with a second spherical surface, and the second opening is provided with a chamfer matched with the second spherical surface.

[0015] In some embodiments, the first outer circumferential surface is provided with a first annular groove, and the outer port of the third liquid passing hole is located at the first annular groove.

[0016] In some embodiments, the end valve seat is made of ceramic material.

[0017] The valve according to the embodiments of the present application comprises the split valve seat according to any one of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1is a structural schematic view of an end valve seat of an embodiment of the present application.

[0019] Figure 2 is a structural schematic view of a guide sleeve of an embodiment of the present application.

[0020] Figure 3 is a structural schematic view of a two-position three-way valve seat of an embodiment of the present application.

[0021] Figure 4 is a structural schematic view of a two-position two-way valve seat of an embodiment of the present application.

[0022] Reference signs:

[0023] end valve seat 1, first end face 11, second end face 12, first liquid passage 13, chamfer 14, first port 17;

[0024] guide sleeve 2, third end face 21, fourth end face 22, first outer peripheral surface 23, second liquid passage 24, third liquid passage 25, first through hole 26, first annular groove 27;

[0025] fitting part 3, fourth liquid passage 31, second port 32;

[0026] top rod 41, first closure 42, second closure 43. DETAILED DESCRIPTION

[0027] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0028] As shown in Figures 1 to 4 , the split valve seat of an embodiment of the present application includes an end valve seat 1, a guide sleeve 2, and a fitting part 3. The end valve seat 1 has a first end face 11 and a second end face 12. The end valve seat 1 is provided with a first liquid passage 13, which penetrates the first end face 11 and the second end face 12.

[0029] Specifically, the end valve seat 1 can have a columnar structure, and the axial direction of the end valve seat 1 can be defined as the left-right direction. The first end face 11 and the second end face 12 can be located on the left side and the right side of the end valve seat 1, respectively. The first liquid passage 13 can be provided in the middle of the end valve seat 1. The first liquid passage 13 can be a circular hole, and the axis of the first liquid passage 13 can coincide with the axis of the end valve seat 1.

[0030] The end valve seat 1 can be formed by a ceramic material, which can be formed integrally of the ceramic material or assembled by a ceramic metal bonding, welding, inlaying and nesting process, as long as the sealing surface is kept of the ceramic material, so as to have the characteristics of wear resistance, corrosion resistance, high hardness, high machining precision and high impact resistance when hard sealing with the first closure 42 of the ceramic material.

[0031] The guide sleeve 2 has a third end face 21, a fourth end face 22 and a first outer peripheral surface 23, the third end face 21 is connected with the second end face 12, the guide sleeve 2 is provided with a second liquid passage hole 24 and a third liquid passage hole 25, the second liquid passage hole 24 penetrates the third end face 21 and the fourth end face 22, and the second liquid passage hole 24 is in communication with the first liquid passage hole 13, the third liquid passage hole 25 penetrates the first outer peripheral surface 23 and the second liquid passage hole 24 to make the second liquid passage hole 24 communicate with the outside of the guide sleeve 2.

[0032] Specifically, the guide sleeve 2 can be a columnar structure and is arranged on the right side of the end valve seat 1, the radial dimension of the guide sleeve 2 can be consistent with the radial dimension of the end valve seat 1, the third end face 21 and the fourth end face 22 can be located on the left side and the right side of the guide sleeve 2 respectively, when the end valve seat 1 and the guide sleeve 2 are connected, the second end face 12 and the third end face 21 can be tightly fitted, the second liquid passage hole 24 can be arranged in the guide sleeve 2 along the left-right direction, and the left port of the second liquid passage hole 24 can be in communication with the first liquid passage hole 13, the extension direction of the third liquid passage hole 25 can be perpendicular to the extension direction of the second liquid passage hole 24, and the inner port of the third liquid passage hole 25 can be in communication with the second liquid passage hole 24, and the outer port can be in communication with the outside of the valve seat.

[0033] It can be understood that a plurality of second liquid passage holes 24 extending along the left-right direction can be arranged in the guide sleeve 2, and correspondingly, a plurality of third liquid passage holes 25 can be arranged in the guide sleeve 2, the plurality of third liquid passage holes 25 can correspond to the plurality of second liquid passage holes 24 one by one, and the plurality of third liquid passage holes 25 and the plurality of fourth liquid passage holes 31 can make the liquid flow through the valve seat more conveniently.

[0034] In addition, the material of the guide sleeve 2 can be ceramic, metal, non-metal and the like.

[0035] The cooperation part 3 is abutted against the fourth end surface 22 to form a valve seat with two-position two-way function or two-position three-way function. Specifically, the cooperation part 3 can be a columnar structure and is abutted against the right side of the guide sleeve 2, the radial dimension of the cooperation part 3 can be the same as that of the guide sleeve 2, when the cooperation part 3 completely blocks the second liquid passing hole 24, the valve seat formed by the end valve seat 1, the guide sleeve 2 and the cooperation part 3 can have two-position two-way function, when a liquid passing hole is formed in the cooperation part 3 and communicates with the second liquid passing hole 24, the valve seat formed by the end valve seat 1, the guide sleeve 2 and the cooperation part 3 can have two-position three-way function.

[0036] The split valve seat of the embodiment of the present application divides the whole valve seat into three parts for processing, for the end valve seat 1, only the first liquid passing hole 13 in the form of a through hole needs to be processed when processing, avoiding the occurrence of difficult processing conditions such as inclined holes and blind holes, reducing the processing difficulty and processing cost, and improving the reliability of the valve seat.

[0037] In some embodiments, the guide sleeve 2 is provided with a first through hole 26, the first through hole 26 communicates with the first liquid passing hole 13 in a positive manner, the first end surface 11 has a first port 17, the first port 17 is located at the critical position of the first liquid passing hole 13 and the first end surface 11, the split valve seat further comprises a top rod 41 and a first closure 42, the top rod 41 has a first end, the top rod 41 is arranged in the first through hole 26 and can slide along the extension direction of the first through hole 26, the first closure 42 is connected with the first end, and the first closure 42 is arranged outside the end valve seat 1 and is adapted to open and close the first port 17 along with the sliding of the top rod 41.

[0038] Specifically, as shown in Figure 2 the first through hole 26 can be formed in the center of the guide sleeve 2 in the left-right direction, and the axis of the first through hole 26 can coincide with the axis of the first liquid passing hole 13, the left port of the first liquid passing hole 13 can be the first port 17, the first port 17 can communicate with a pipeline outside the valve seat, the top rod 41 can be attached to the inner wall of the first through hole 26 and can slide in the left-right direction, and the first closure 42 can be fixedly connected with the left end of the top rod 41, when the first closure 42 slides to the right to the first port 17 under the action of external force to realize hard sealing, the communication between the first liquid passing hole 13 and the external pipeline can be cut off, and when the first closure 42 is separated from the first port 17 under the action of external force, the first liquid passing hole 13 can communicate with the external pipeline.

[0039] In addition, chamfers 14 can be provided at the left and right two ports of the first through hole 26, which can facilitate the movement of the top rod 41 through the first through hole 26 and facilitate installation and use.

[0040] In some embodiments, the fitting part 3 has a fifth end face and a sixth end face, and a fourth liquid passage hole 31 is arranged in the fitting part 3, the fourth liquid passage hole 31 penetrates the fifth end face and the sixth end face, the fifth end face and the fourth end face 22 abut, and the fourth liquid passage hole 31 and the second liquid passage hole 24 are communicated, so that the valve seat formed has a two-position three-way function.

[0041] Specifically, as shown in Figure 3 the fifth end face and the sixth end face can be located at the left side and the right side of the fitting part 3 respectively, the fourth liquid passage hole 31 can be arranged at the center of the fitting part 3, and the axis of the fourth liquid passage hole 31 can coincide with the axis of the first through hole 26. When the fifth end face and the fourth end face 22 abut, the fourth liquid passage hole 31 can be communicated with the second liquid passage hole 24. At this time, the right port of the fourth liquid passage hole 31 and the outer port of the third liquid passage hole 25 can be respectively communicated with the external pipeline, so that the valve seat formed by the combination of the fitting part 3, the end valve seat 1 and the guide sleeve 2 has a two-position three-way function.

[0042] In some embodiments, the split valve seat further comprises a second closure 43, the top rod 41 has a second end, the second closure 43 is connected with the second end, the sixth end face has a second port 32, the second port 32 is located at the critical position of the fourth liquid passage hole 31 and the sixth end face, and the second closure 43 is arranged outside the fitting part 3 and is adapted to open and close the second port 32 with the sliding of the top rod 41.

[0043] Specifically, as shown in Figure 3 the right port of the fourth liquid passage hole 31 can be the second port 32, the second end can be the right end of the top rod 41 and located in the fourth liquid passage hole 31, and the second closure 43 can be fixedly connected with the second end. When the second closure 43 is driven to the second port 32 to achieve hard sealing under the action of external force, the communication between the fourth liquid passage hole 31 and the external pipeline can be interrupted. When the second closure 43 is separated from the second port 32 under the action of external force, the fourth liquid passage hole 31 can be communicated with the external pipeline.

[0044] It should be noted that when the end valve seat 1, the guide sleeve 2 and the fitting part 3 are combined into a valve seat with a two-position three-way function, at this time, the structure of the fitting part 3 and the end valve seat 1 can be consistent, and the fitting part 3 can also be processed and formed by ceramic material. The fitting part 3 can be entirely made of ceramic material, or can be assembled and formed by ceramic metalization bonding, welding, inlaying and nesting process. Only the sealing surface needs to be kept as ceramic material, so that when hard sealing with the second closure 43 of ceramic material, it has the characteristics of anti-wear, anti-corrosion, high hardness, high machining precision and high impact resistance.

[0045] It can be understood that, as Figure 3As shown, when the valve seat formed by the combination of the end valve seat 1, the guide sleeve 2 and the matching part 3 has a two-position three-way function, the first sealing part 42 can form a hard seal at the first port 17 under the action of an external force, and the second sealing part can be out of contact with the second port 32, at this time, the first liquid passage 13 is in a disconnected state with the external pipeline, and the third liquid passage 25 and the fourth liquid passage 31 can be respectively connected with the external pipeline, when the second sealing part 43 moves to the left under the action of an external force to form a hard seal at the second port 32, the first sealing part can be out of contact with the first port 17, at this time, the fourth liquid passage 31 is in a disconnected state with the external pipeline, and the first liquid passage 13 and the third liquid passage 25 can be respectively connected with the external pipeline, wherein the third liquid passage 25 is simultaneously kept in communication with the first liquid passage 13 and the fourth liquid passage 31 through the second liquid passage 24.

[0046] In some embodiments, the matching part 3 has a fifth end face, the fifth end face is in abutment with the fourth end face 22 and blocks the second liquid passage 24, so that the valve seat formed has a two-position two-way function, and the matching part 3 is provided with a second through hole, the second through hole is opposite to the first through hole 26 and is adapted for the top rod 41 to pass through.

[0047] Specifically, as shown in Figure 4 the fifth end face can be located on the left side of the matching part 3, when the fifth end face of the matching part 3 is in close abutment with the guide sleeve 2, the right end of the second liquid passage 24 can be completely blocked, at this time, the valve seat formed by the combination of the end valve seat 1, the guide sleeve 2 and the matching part 3 has a two-position two-way function, wherein the first liquid passage 13 and the third liquid passage 25 can be respectively connected with the external pipeline, the second through hole can have the same size as the first through hole 26 and be arranged at the center of the matching part 3, and the top rod 41 can be controlled to axially slide in the first through hole 26 and the second through hole by an external force to control the opening and closing of the first sealing part 42 to the first port 17.

[0048] For example, when the first sealing part 42 is controlled to form a hard seal at the first port 17, the first liquid passage 13 is no longer connected with the external pipeline, at this time, the split valve seat is in a disconnected state, and when the first sealing part 42 is controlled to be out of contact with the first port 17, the first liquid passage 13 and the third liquid passage 25 can be simultaneously kept in communication with the external pipeline, and the split valve seat is in a connected state.

[0049] In some embodiments, the first port 17 is a round port, and the first sealing part 42 has a first spherical surface, and the first port 17 is provided with a chamfer 14 matched with the first spherical surface. Specifically, as shown in Figure 1 and Figure 3As shown, the first closure 42 with the spherical structure can be abutted at the first port 17 in the form of a round opening, and by setting the chamfer 14 at the first port 17, the first closure 42 can be in surface contact with the first port 17, which can improve the sealing effect of the first closure 42 at the first port 17.

[0050] In some embodiments, the second port 32 is a round opening, the second closure 43 has a second spherical surface, and the second port 32 is provided with a chamfer 14 matched with the second spherical surface. Specifically, as shown in Figure 3 As shown, the second closure 43 with the spherical structure can be abutted at the second port 32 in the form of a round opening, and by setting the chamfer 14 at the second port 32, the second closure 43 can be in surface contact with the second port 32, which can improve the sealing effect of the second closure 43 at the second port 32.

[0051] The first closure 42 and the second closure 43 can be in the form of a spherical body or a conical body.

[0052] In addition, the right end of the first liquid passage hole 13 and the left end of the fourth liquid passage hole 31 can be provided with large chamfers to communicate with the second liquid passage hole 24.

[0053] In some embodiments, the first outer circumferential surface 23 is provided with a first annular groove 27, and the outer side port of the third liquid passage hole 25 is located at the first annular groove 27. Specifically, as shown in Figure 2 As shown, when a plurality of third liquid passage holes 25 are provided on the guide sleeve 2, the plurality of third liquid passage holes 25 can be spaced apart along the circumference of the guide sleeve 2, and when the split valve seat is installed at the cavity in the valve body, the first outer circumferential surface 23 can be attached to the cavity wall of the cavity in the valve body, at this time, the first annular groove 27 provided on the first outer circumferential surface 23 can communicate the outer side ports of the plurality of third liquid passage holes 25 with each other, and facilitate the same pipeline communication with the outside.

[0054] The valve of the embodiment of the present application is described below.

[0055] The valve of the embodiment of the present application includes a split valve seat, which can be the split valve seat described in the above embodiments. The valve has the characteristics of low processing difficulty and cost, and high reliability.

[0056] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0057] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated thereby. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0058] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0060] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0061] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A split valve seat, characterized by, The split valve seat comprises: an end valve seat having a first end face and a second end face, a first liquid passage hole being arranged in the end valve seat and penetrating through the first end face and the second end face, the end valve seat being made of ceramic material; a guide sleeve having a third end face, a fourth end face and a first outer peripheral surface, the third end face being connected to the second end face, a second liquid passage hole and a third liquid passage hole being arranged in the guide sleeve, the second liquid passage hole penetrating through the third end face and the fourth end face and being in communication with the first liquid passage hole, the third liquid passage hole penetrating through the first outer peripheral surface and the second liquid passage hole to make the second liquid passage hole in communication with the outside of the guide sleeve; a matching part being in abutment with the fourth end face to make the formed valve seat have a two-position two-way function or a two-position three-way function.

2. The split valve seat of claim 1, wherein, The guide sleeve is provided with a first through hole in communication with the first liquid passage hole, the first end face is provided with a first port located at the boundary between the first liquid passage hole and the first end face, and the split valve seat further comprises: a top rod having a first end, the top rod being arranged in the first through hole and being slidable along the extension direction of the first through hole; a first closure part connected to the first end, the first closure part being arranged outside the end valve seat and being adapted to open and close the first port along with the sliding of the top rod.

3. The split valve seat of claim 2, wherein, The matching part is provided with a fifth end face and a sixth end face, a fourth liquid passage hole being arranged in the matching part and penetrating through the fifth end face and the sixth end face, the fifth end face being in abutment with the fourth end face, and the fourth liquid passage hole being in communication with the second liquid passage hole to make the formed valve seat have a two-position three-way function.

4. The split valve seat of claim 3, wherein, The top rod is further provided with a second end, the second closure part being connected to the second end, the sixth end face is provided with a second port located at the boundary between the fourth liquid passage hole and the sixth end face, and the second closure part being arranged outside the matching part and being adapted to open and close the second port along with the sliding of the top rod.

5. The split valve seat of claim 2, wherein, The matching part is provided with a fifth end face in abutment with the fourth end face and blocking the second liquid passage hole to make the formed valve seat have a two-position two-way function, and a second through hole being arranged in the matching part and being in direct communication with the first through hole and being adapted to allow the top rod to move therethrough.

6. The split valve seat of claim 4, wherein, The first port is a round port, the first closure part is provided with a first spherical surface, and a chamfer adapted to the first spherical surface is arranged at the first port.

7. The split valve seat of claim 6, wherein, The second port is a round port, the second closure part is provided with a second spherical surface, and a chamfer adapted to the second spherical surface is arranged at the second port.

8. The split valve seat according to any one of claims 1-7, wherein, The first outer peripheral surface is provided with a first annular groove, and the outer port of the third liquid passage hole is located at the first annular groove.

9. The split valve seat of claim 7, wherein, The first spherical surface or the second spherical surface is made of ceramic material.

10. A valve characterized by, The split valve seat comprises: a split valve seat according to any one of claims 1-9.

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