CN212273156U - Check valve for paste pipeline - Google Patents

Abstract

The utility model relates to a lotion pipeline check valve, support and case including the main valve body, inferior valve body, claw shape, the main valve body is connected with inferior valve body and is constituted the valve pocket that has feed inlet and discharge gate, the support is inlayed on the main valve body and is compressed tightly through inferior valve body and make it fixed, the case is placed in the valve pocket of the main valve body, realizes automatic start-stop through the drive that overflows the medium. When the material flow positively flows through the pipeline check valve, the material flow drives the valve core to be located on the support, and a flow passage is formed at the periphery of the valve core, so that the material flow smoothly passes through the valve core; when the material flow reversely flows through the pipeline check valve, the material flow driving valve core is located at the feeding opening part of the main valve body, so that the channel is closed to realize reverse stop. The utility model has the advantages of simple structure, small forward flow resistance, rapid and reliable reverse stopping and the like.

Description

Check valve for paste pipeline

Technical Field

The utility model relates to a fluid pipeline carries technical field, specifically is a lotion pipeline check valve.

Background

In the field of fluid high-pressure pipeline conveying engineering, particularly when solid-liquid two-phase fluid, multiphase fluid and slurry and paste materials with high solid content are conveyed, a volume type plunger pump or a piston pump is generally adopted for conveying. When the pump is conveyed upwards, fluid in the pipeline can generate downward gravitational potential energy, and materials in the pipeline can generate reverse backflow under the action of the gravitational potential energy in the reversing process of a plunger or a piston of the pump, so that the volumetric efficiency of the pump can be influenced, and the pump can be impacted and damaged to further generate equipment and personal safety hazards.

In the prior art, various mature check valves are suitable for general fluids and low-concentration slurry. The paste body shows the rheological characteristic of special structural flow rather than turbulence in pipeline transportation, so that the pipeline accessory is required to have a smooth flow channel without dead angles so as to reduce the fluid resistance and avoid the silting of the paste body; until now, a mature technology is rarely seen for pipeline check valves suitable for conveying paste materials, pastes containing large-particle-size solids, and especially mine filling pastes doped with cementing materials such as cement.

The check valve in the technical scheme of current patent's valve body interior part is more, and the structure is complicated, has the dead angle, and the material at these positions not only can cause certain flow resistance owing to can not be washed and produce the siltation by the material stream, still can solidify and then block up the runner to the filling lotion that has adulterated cement. Thus, it is possible to transport a general fluid, but it cannot be used for the transport of a paste, especially a filling paste mixed with cement. In addition, in the prior art, the sealing is usually realized by the gravity of the valve core, the sealing effect generated by the gravity of the valve core is very poor, and the sealing stop function cannot be realized particularly when the valve core is installed on a horizontal pipeline.

In the other check valve in the technical scheme of the prior patent, a support sealed with the valve core adopts a bell-mouthed structure, and a surface seal is formed between the support and the valve core. When paste slurry containing solid particles is conveyed, the solid particles can be clamped between sealing surfaces formed by the support of the bell-mouth structure and the valve core, and then a gap is generated, so that the adverse effect of reverse cut-off difference is caused.

The utility model discloses according to lotion pipeline transport's rheological characteristic characteristics, the design has conceived a lotion pipeline check valve, can be expected to realize effectual switching on and ending when carrying liquid, solid-liquid two-phase fluid, multiphase flow, the slurry and the lotion class material of high solid content.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a lotion pipeline check valve is provided to prevent fluidic reverse backward flow, guarantee to have higher conveying efficiency, avoid the fluid backward flow to advance to the impact damage that the pump produced, guarantee equipment and personal safety.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the paste pipeline check valve comprises a valve body, a support and a valve core, wherein a valve cavity is formed in the valve body, the valve core is arranged in the valve cavity and moves in the valve cavity, the valve body is provided with a feed port and a discharge port which are respectively communicated with the valve cavity, the support is fixedly arranged at one end, close to the discharge port, in the valve cavity, the support comprises a plurality of support columns, one ends of the support columns are fixedly connected with the inner wall of the valve body, the other ends of the support columns are used for being abutted against one end, close to the discharge port, of the valve core, and one end, close to the feed port, of the valve cavity is provided with a sealing surface which is matched with one end, close.

The utility model has the advantages that: the check valve of the paste pipeline prevents reverse backflow of materials, ensures higher conveying efficiency, avoids impact damage to the pump caused by backflow, and ensures equipment and personal safety. The valve core and the inner wall of the valve body can form a larger flow gap by the support columns, so that material flow can conveniently pass through; simultaneously, a plurality of support columns can guarantee the stability that the case seat fell on it.

Preferably, the number of the support columns is at least three.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, the support still includes the support ring, a plurality of the one end of support column with the support ring fixed connection or integrated into one piece, the support ring is fixed in the valve pocket is close to in the one end of discharge gate.

The beneficial effect of adopting the further scheme is that: the support column is fixed on the support ring, and then the support ring is installed in the valve body, so that the support column is convenient to install and position.

Furthermore, the valve cavity is a cylindrical cavity, the support columns are uniformly distributed in the valve body along the circumferential direction, and one end, close to the discharge hole, of the valve core is a spherical surface or a circular table surface.

The beneficial effect of adopting the further scheme is that: the valve core has small resistance to materials in the working process, does not need a guide element, has simple structure, is uniformly worn when conveying materials with abrasive property, and has reliable guarantee on sealing.

Furthermore, one end of the valve core close to the feed inlet is a spherical surface or a circular table surface.

The beneficial effect of adopting the further scheme is that: the valve core has small resistance to materials in the working process, does not need a guide element, has simple structure, is uniformly worn when conveying materials with abrasive property, and has reliable guarantee on sealing.

Further, the valve core is a sphere or a double-round table body, the maximum diameter of the valve core is larger than the diameter of a circle defined by the end parts of the other ends of the support columns, the sealing surface is a round table surface, and the maximum diameter of the valve core is larger than the inner diameter of the sealing surface.

The ring seat is annular and is provided with the sealing surface, and the ring seat is fixedly arranged inside one end, close to the feed inlet, of the valve cavity.

The beneficial effect of adopting the further scheme is that: the sealing surface is arranged on the ring seat, the ring seat is arranged in the valve body, the sealing surface can be conveniently processed, and the reliability of sealing with the valve core can be ensured by the regular ring seat after processing.

Further, a line seal is formed between the sealing surface and one end, close to the feed inlet, of the valve core.

The beneficial effect of adopting the further scheme is that: the valve clamping phenomenon can be prevented when solid granular materials are conveyed. When the impact of the reverse material flow is relied on to make the valve core contact with the ring seat for sealing, the structure of the near line sealing can effectively drive away solid particles influencing sealing, thereby realizing effective sealing and stopping.

Specifically, the ring seat is annular, and its inner bore tip has less chamfer, has little chamfer promptly, the interference of ring seat is inlayed in the feed inlet one end of valve body to it is fixed to braze.

Further, the valve body includes the main valve body and time valve body, the one end of the main valve body has first intercommunication mouth, and the other end has the feed inlet, the valve pocket is located the main valve is internal and respectively with first intercommunication mouth with the feed inlet intercommunication, the one end of time valve body has the second intercommunication mouth, and the other end has the discharge gate, the one end of the main valve body with the one end fixed connection of time valve body passes through first intercommunication mouth with second intercommunication mouth intercommunication, the support is fixed set up in the first intercommunication mouth, the one end of time valve body with the support butt is realized the location of support, the case set up in the main valve is internal.

The beneficial effect of adopting the further scheme is that: the valve body is divided into a main valve body and a secondary valve body, and the support is arranged at the joint of the main valve body and the secondary valve body, so that the support is convenient to install, and the maintenance of the interior of the valve body is convenient.

Further, the one end of the main valve body with the one end of inferior valve body passes through connecting piece fixed connection, the connecting piece is clamp or flange.

The beneficial effect of adopting the further scheme is that: the connection mode is flexible and various, and the installation and the maintenance are convenient.

Further, the valve core is an elastic body made of high-wear-resistant rubber, or the valve core is a hollow shell wrapped with the high-wear-resistant rubber.

The beneficial effect of adopting the further scheme is that: the valve core has micro deformation through the extrusion of material flow, and the sealing effect with the ring seat is further enhanced.

Drawings

Fig. 1 is a sectional view of a check valve of a paste pipeline according to an embodiment of the present invention;

fig. 2 is a sectional view of a check valve of a paste pipeline according to another embodiment of the present invention;

fig. 3 is a cross-sectional view of the support of the present invention;

fig. 4 is a top view of the support of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. valve body, 101, main valve body, 102, time valve body, 2, support, 201, support column, 202, support ring, 3, case, 4, ring seat, 5, clamp.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1-4, the utility model relates to a paste pipeline check valve, which comprises a valve body 1, a support 2 and a valve core 3, wherein a valve cavity is arranged in the valve body 1, the valve core 3 is arranged in the valve cavity and moves in the valve cavity, the valve body 1 is provided with a feed inlet and a discharge outlet which are respectively communicated with the valve cavity, the support 2 is fixedly arranged at one end of the valve cavity close to the discharge outlet, the support 2 comprises a plurality of support columns 201, one end of each support column 201 is fixedly connected with the inner wall of the valve body 1, when a material enters the valve body 1 from the feed inlet, the other end of each support column 201 is used for abutting against one end of the valve core 3 close to the discharge outlet, one end of the valve cavity close to the feed inlet is provided with a sealing surface which is used for being matched with one end of the, when the material enters the valve body 1 from the discharge hole, the valve core 3 is abutted against the sealing surface and prevents the material from flowing out from the feed hole.

Specifically, the supporting pillars 201 are cylinders, as shown in fig. 1 to 4, a plurality of the supporting pillars 201 are arranged obliquely, and the outer envelope surface of the plurality of the supporting pillars 201 is a circular table surface. In this embodiment, the number of the supporting columns 201 is 3.

As a further scheme of this embodiment, the support 2 further includes a support ring 202, one end of the plurality of support pillars 201 is fixedly connected to or integrally formed with the support ring 202, and the support ring 202 is fixed in one end of the valve cavity close to the discharge hole.

Specifically, the support ring 202 is claw-shaped with the seat 2 formed by the support column 201, and can support the valve element 3 and provide a gap between the valve element 3 and the inner wall of the valve body 1.

As a further scheme of this embodiment, the valve cavity is a cylindrical cavity, the plurality of support pillars 201 are uniformly distributed in the valve body 1 along the circumferential direction, and one end of the valve core 3 close to the discharge port is a spherical surface or a circular table surface.

As a further scheme of this embodiment, one end of the valve core close to the feed port is a spherical surface or a circular table surface.

As a further solution of this embodiment, the valve core 3 is a sphere or a double-truncated cone, the maximum diameter of the valve core 3 is greater than the diameter of a circle surrounded by the end portions of the other ends of the support pillars 201, the sealing surface is a circular table, and the maximum diameter of the valve core 3 is greater than the inner diameter of the sealing surface.

In one embodiment, as shown in fig. 1, the valve element 3 is a ball.

As shown in fig. 2, in another embodiment, the double frustums represent: the two ends of the valve core 3 are truncated cone bodies, and the middle part of the valve core is a cylinder.

As a further scheme of this embodiment, the valve further includes a ring seat 4, where the ring seat 4 is annular and has the sealing surface, and the ring seat 4 is fixedly disposed in one end of the valve cavity close to the feed port.

As a further scheme of this embodiment, a line seal is formed between the sealing surface and one end of the valve element 3 close to the feed port.

Specifically, the ring seat 4 is in an annular block shape, the end of an inner hole of the ring seat is provided with a small chamfer, namely a micro chamfer, an annular inclined plane formed by the chamfer is the sealing surface, the diameter difference of the inner ring and the outer ring of the sealing surface is small, so that the contact part between the ring seat 4 and the valve core 3 is approximately an annular line, namely a line seal is formed, and the ring seat 4 is embedded in one end of the feed inlet of the valve body 1 in an interference manner and is fixed by brazing.

As a further scheme of this embodiment, valve body 1 includes main valve body 101 and time valve body 102, the one end of the main valve body 101 has first intercommunication mouth, and the other end has the feed inlet, the valve pocket is located in the main valve body 101 and respectively with first intercommunication mouth with the feed inlet intercommunication, the one end of time valve body 102 has the second intercommunication mouth, and the other end has the discharge gate, the one end of the main valve body 101 with the one end fixed connection of time valve body 102 passes through first intercommunication mouth with the second intercommunication mouth intercommunication, support 2 fixed set up in the first intercommunication mouth, the one end of time valve body 102 with the 2 butt of support are realized the location of support 2.

Specifically, the ring seat 4 is fixed in the main valve body 101.

As a further solution of this embodiment, one end of the main valve body 101 and one end of the secondary valve body 102 are fixedly connected through a connecting member, and the connecting member is a clamp 5 or a flange. The clamp 5 is fixedly connected to one end of the main valve body 101 and the outer side of one end of the secondary valve body 102, so that the main valve body 101 and the secondary valve body 102 are fixedly connected; or one end of the main valve body 101 and one end of the sub valve body 102 are connected through a flange.

Specifically, the connection between one end of the main valve body 101 and one end of the secondary valve body 102 includes, but is not limited to, a clip connection, and may also be other effective connection such as a flange connection and a hinge connection.

Specifically, one end of the main valve body 101 and one end of the secondary valve body 102 are connected by a flange, specifically: one end of the main valve body 101 is provided with a first flange, one end of the secondary valve body 102 is provided with a second flange, and the first flange and the second flange are fixedly connected through bolts.

As a further aspect of this embodiment, the valve core 3 is an elastic body made of highly wear-resistant rubber, or the valve core 3 is a hollow shell covered with highly wear-resistant rubber, that is, the valve core 3 includes a hollow shell made of metal and a highly wear-resistant rubber layer covered outside the hollow shell.

The utility model discloses a lotion pipeline check valve use as follows: when the material flow flows through the pipeline check valve in the forward direction, namely the material flow flows from the feeding hole to the discharging hole, the valve core 3 driven by the material flow is located on the support 2, and a flow passage is formed at the periphery of the valve core 3, so that the material flow passes through smoothly; when the material flow reversely flows through the pipeline check valve, i.e. the material flow flows from the discharge port to the feed port, the valve core 3 driven by the material flow is located on the ring seat 4 in the main valve body 101, so that the passage is closed and the reverse stop is realized.

In order to reduce the fluid resistance, the area of an overflowing channel formed by the valve core 3 of the paste pipeline check valve and the inner wall of the valve body 1 of the paste pipeline check valve is not smaller than the overflowing area of an inner hole of a paste conveying pipeline, and the paste conveying pipeline is used for conveying paste and is connected and communicated with the paste pipeline check valve.

For guaranteeing the utility model discloses the seepage does not take place for lotion pipeline check valve under bearing the high-pressure state, has still set up the sealing washer between inferior valve body 102 and the main valve body 101, and the sealing washer clamp is established between the one end of inferior valve body 102 and the one end of the main valve body 101, because this sealed setting belongs to well-known technology, no longer gives unnecessary details here.

The utility model discloses the spare part that all relates to overflowing has adopted the smooth curved surface structure that can make the fluid flow resistance fall to the minimum, and this is particularly suitable for when carrying high concentration slurry, similar lotion and the poor material of lotion class mobility.

Owing to adopt above-mentioned special structural design, lotion pipeline check valve can fully realize the technical purpose of the utility model, have more extensive suitability to including high concentration slurry, like lotion and the poor all kinds of fluids of lotion class mobility.

The utility model has the advantages of small forward flow resistance and rapid and reliable reverse stopping.

The utility model also has the advantages of small volume, simple structure, low manufacturing cost, etc.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A paste pipeline check valve is characterized by comprising a valve body (1), a support (2) and a valve core (3), the valve body (1) is internally provided with a valve cavity, the valve core (3) is arranged in the valve cavity and moves in the valve cavity, the valve body (1) is provided with a feed inlet and a discharge outlet which are respectively communicated with the valve cavity, the support (2) is fixedly arranged at one end of the valve cavity close to the discharge outlet, the support (2) comprises a plurality of support columns (201), one end of each support column (201) is fixedly connected with the inner wall of the valve body (1), the other end of the supporting column (201) is used for being abutted against one end of the valve core (3) close to the discharge hole, one end of the valve cavity close to the feed port is provided with a sealing surface which is used for being matched with one end of the valve core (3) close to the feed port and realizing sealing.

2. The paste pipeline check valve according to claim 1, wherein the support (2) further comprises a support ring (202), one end of the support columns (201) is fixedly connected with or integrally formed with the support ring (202), and the support ring (202) is fixed in one end of the valve cavity close to the discharge hole.

3. The paste pipeline check valve according to claim 1, wherein the valve cavity is a cylindrical cavity, the plurality of support columns (201) are uniformly distributed in the valve body (1) along the circumferential direction, and one end of the valve core (3) close to the discharge port is a spherical surface or a circular table surface.

4. The paste pipeline check valve of claim 3, wherein one end of the valve core close to the feed inlet is a spherical surface or a circular table surface.

5. The paste pipeline check valve according to claim 4, wherein the valve core (3) is a sphere or a double-truncated cone, the maximum diameter of the valve core (3) is larger than the diameter of a circle defined by the other end parts of the plurality of supporting columns (201), the sealing surface is a circular table surface, and the maximum diameter of the valve core (3) is larger than the inner diameter of the sealing surface.

6. The paste pipeline check valve according to any one of claims 1 to 5, further comprising a ring seat (4), wherein the ring seat (4) is annular and has the sealing surface, and the ring seat (4) is fixedly arranged in one end of the valve cavity close to the feed port.

7. The paste pipeline check valve according to claim 6, wherein a line seal is formed between the sealing surface and one end of the valve core (3) close to the feeding hole.

8. The paste pipeline check valve according to any one of claims 1-5, wherein the valve body (1) comprises a main valve body (101) and a sub valve body (102), one end of the main valve body (101) has a first communication port, the other end has the feeding port, the valve cavity is located in the main valve body (101) and is respectively communicated with the first communication port and the feeding port, one end of the sub valve body (102) has a second communication port, the other end has the discharging port, one end of the main valve body (101) and one end of the sub valve body (102) are fixedly connected and are communicated through the first communication port and the second communication port, the support (2) is fixedly arranged in the first communication port, and one end of the sub valve body (102) is abutted against the support (2) to realize the positioning of the support (2).

9. The check valve for paste pipeline according to claim 8, wherein one end of the main valve body (101) and one end of the secondary valve body (102) are fixedly connected through a connecting piece, and the connecting piece is a clamp (5) or a flange.

10. The paste pipeline check valve according to any one of claims 1 to 5, wherein the valve core (3) is an elastomer made of high wear-resistant rubber, or the valve core (3) is a hollow shell wrapped with high wear-resistant rubber.

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