A V-shaped lower guide type check valve spool and a cone valve type suction and discharge pulp assembly

Abstract

The utility model discloses a V type lower guide formula check valve valve core and cone valve type suction and discharge pulp subassembly, check valve valve core, including valve seat, valve core subassembly, spring, valve seat fixed connection is in the pulp inlet of valve body, and the upper end of spring is fixedly connected with the top of valve body, the upper end of valve core subassembly is sleeved in the lower end of spring, and the lower end of valve core subassembly is slidably arranged in the valve seat, valve core subassembly includes valve block, soft sealing pad, when valve core closes, soft sealing pad contacts with valve seat first, and first taper surface and second taper surface are close, realize sealing, still be equipped with gap between third taper surface and second taper surface at this time, if the particle impurity is stuck in the gap, and will not cause sealing failure, when there is no particle impurity in the gap, after continuing to move down, third taper surface and second taper surface are close, realize rigid limit and sealing, and the cone valve type suction and discharge pulp subassembly adopts the valve core structure, guarantees the sealing performance when the slurry granularity is bigger, impact resistance, and flow stability.

Description

Technical Field

[0001] This utility model relates to the field of suction and discharge valve technology, specifically to a V-shaped downward-guided one-way valve core and a cone valve suction and discharge assembly. Background Technology

[0002] The grout suction and discharge valve assembly is a core component of the grouting pump, and its structure and performance design directly affect the smooth intake and discharge of grout. Under the action of the reciprocating pump, the intake fluid medium is pumped at high pressure to the pipeline. Large-diameter check valves are installed at both the intake and discharge ports of the grout suction and discharge valve assembly. In existing technology, the valve seat of the large-diameter check valve and the grout body are mostly installed and positioned using a ring-shaped mating upper pressure rod to ensure that the valve seat does not shift during the grouting material intake and discharge process. However, this structure can lead to positioning failure due to wear of the upper pressure rod caused by excessive grout flow. Currently, the valve core of large-diameter check valve assemblies often uses steel balls or metal cone valves to achieve one-way sealing. This structure suffers from poor sealing performance due to the heavy weight of large-diameter steel balls and the large impact of metal cone valves.

[0003] When the impurities in the slurry are large, after the valve core returns to its seat, large impurities remain between the valve core and the valve seat, leading to sealing failure. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a V-shaped downward-guided one-way valve core and a cone valve-type suction and discharge assembly.

[0005] The technical solution of this utility model to solve the above problems is: a V-shaped downward-guided one-way valve core, including a valve seat, a valve core assembly, and a spring; The valve seat is fixedly connected to the slurry inlet of the valve body, the upper end of the spring is fixedly connected to the top of the valve body, the upper end of the valve core assembly is sleeved inside the lower end of the spring, and the lower end of the valve core assembly is slidably disposed inside the valve seat. The valve core assembly includes a valve block and a soft sealing gasket. The valve block has a mounting groove on its side wall, and the soft sealing gasket is disposed within the mounting groove. The mounting groove mates with the upper surface and inner wall shape of the soft sealing gasket. The outer wall of the soft sealing gasket includes a first vertical surface and a first conical surface, with a chamfer between the first vertical surface and the first conical surface. The lower end of the valve block's side wall has a third conical surface, which is offset from the first conical surface and is located inside the first conical surface.

[0006] The valve seat inner wall is provided with a second conical surface and a guide surface from top to bottom. The second conical surface is tapered with the third conical surface and the first conical surface. The bottom of the third block is provided with several guide claws. The guide claws slide in contact with the guide surface. There are at least two guide claws. The guide claws are clearance-fitted with the guide surface.

[0007] Furthermore, the valve block includes a first block, a second block, and a third block arranged sequentially from top to bottom. A spring guide groove is provided at the connection between the second block and the first block, and the groove surface of the spring guide groove is an inclined surface.

[0008] Furthermore, the outer diameter of the third block is smaller than the minimum outer diameter of the second block.

[0009] Furthermore, the upper surface of the soft sealing gasket includes a first plane and a second plane from the outside to the inside, with the first plane being higher than the second plane. The inner wall of the soft sealing gasket includes a first cylindrical section, a conical transition section, and a second cylindrical section from top to bottom, with the inner diameter of the first cylindrical section being smaller than the inner diameter of the second cylindrical section.

[0010] Furthermore, multiple sets of positioning units are concentrically arranged at the connection between the first plane and the mounting groove. Each set of positioning units includes a positioning protrusion and a positioning concave ring. The positioning protrusion is fixedly arranged on the upper surface of the first plane, and the positioning concave ring is arranged on the mounting groove. The positioning protrusion is limited within the positioning concave ring.

[0011] A cone valve type slurry suction and discharge assembly includes a slurry suction and discharge tee and two valve groups; The valve assembly includes a valve body and the aforementioned valve core. The bottom of the valve body is provided with a grout inlet, and the side wall of the valve body is provided with a grout outlet. One end of the grout suction and discharge tee is connected to the grouting pump, one end is connected to the grout inlet of one of the valve assemblies, and the other end is connected to the grout outlet of the other valve assembly.

[0012] Furthermore, the outer diameter of the valve seat of the valve core gradually decreases from top to bottom, forming a taper. The slurry inlet is provided with a taper that matches the valve seat, and a sealing ring is provided on the outer wall of the valve seat.

[0013] Furthermore, the valve body includes a side and a top, which are sealed together by multiple bolts, and the upper end of the spring is fixedly connected to the lower end face of the top.

[0014] This utility model has the following beneficial effects: This invention provides a V-shaped downward-guided one-way valve core and a cone valve-type slurry suction and discharge assembly. When the valve core is closed, the soft sealing gasket first contacts the valve seat, and the first cone surface and the second cone surface are tightly attached to achieve a seal. At this time, there is still a gap between the third cone surface and the second cone surface. If particulate impurities are stuck in the gap, it will not cause the seal to fail. When there are no particulate impurities in the gap, the valve core continues to move downward and the third cone surface is tightly attached to the second cone surface, achieving rigid limiting and sealing, ensuring the service life and reliability of the soft sealing gasket. The soft sealing gasket is easy to disassemble and replace. The lower end of the valve core assembly can achieve downward guidance through the guide claw. The cone valve-type slurry suction and discharge assembly adopts the above-mentioned valve core structure, which ensures the sealing performance when the slurry particle size is large, is impact-resistant, and has a stable flow rate. Attached Figure Description

[0015] Figure 1 A schematic diagram of the valve core of a V-type bottom-guided check valve; Figure 2 A schematic diagram of the valve core body and valve seat; Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle; Figure 4 This is a schematic diagram of the structure of a cone valve type slurry suction and discharge assembly; Figure 5 This is a side view of a cone valve type suction and discharge slurry assembly; In the diagram: 1-valve seat, 2-spring, 3-valve block, 4-soft sealing gasket, 5-first block, 6-second block, 7-third block, 8-spring guide groove, 9-mounting groove, 10-first plane, 11-second plane, 12-first cylindrical section, 13-conical transition section, 14-second cylindrical section, 15-first vertical plane, 16-first conical surface, 17-third conical surface, 18-positioning convex ring, 19-positioning concave ring, 20-second conical surface, 21-guide surface, 22-guide claw, 23-slurry suction / discharge tee, 24-valve assembly, 25-slurry inlet, 26-slurry outlet, 27-sealing ring, 28-valve body. Detailed Implementation

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] like Figure 1-3 As shown, a V-shaped down-guided one-way valve core includes a valve seat 1, a valve core assembly, and a spring 2; The valve seat 1 is fixedly connected to the slurry inlet 25 of the valve body 28, the upper end of the spring 2 is fixedly connected to the top of the valve body 28, the upper end of the valve core assembly is sleeved inside the lower end of the spring 2, and the lower end of the valve core assembly is slidably disposed inside the valve seat 1. The valve core assembly includes a valve block 3 and a soft sealing gasket 4. The valve block 3 includes a first block 5, a second block 6, and a third block 7 arranged sequentially from top to bottom. A spring guide groove 8 is provided at the connection between the second block 6 and the first block 5. The groove surface of the spring guide groove 8 is inclined, and the lower end of the spring 2 is disposed in the spring guide groove 8. An installation groove 9 is provided on the side wall of the second block 6. The soft sealing gasket 4 is disposed in the installation groove 9. The upper surface of the soft sealing gasket 4 includes a first plane 10 and a second plane 11 from the outside to the inside. The first plane 10 is higher than the second plane 11 to improve the resistance of the soft sealing gasket 4 when subjected to external pressure. The inner wall of the soft sealing gasket 4 includes a first cylindrical section 12, a conical transition section 13, and a second cylindrical section 14 from top to bottom. The inner diameter of the first cylindrical section 12 is smaller than the inner diameter of the second cylindrical section 14. The installation groove 9 matches the shape of the upper surface and inner wall of the soft sealing gasket 4. The outer wall of the soft sealing gasket 4 includes a first vertical surface 15 and a first conical surface 16, with a chamfer between the first vertical surface 15 and the first conical surface 16. The lower end of the side wall of the second block 6 has a third conical surface 17, which is offset from the first conical surface 16 and is located inside the first conical surface 16. The outer diameter of the third block 7 is smaller than the minimum outer diameter of the second block 6.

[0018] In one embodiment, multiple sets of positioning units are concentrically arranged at the connection between the first plane 10 and the mounting groove 9. Each positioning unit includes a positioning protrusion 18 and a positioning concave ring 19. The positioning protrusion is fixedly disposed on the upper surface of the first plane 10, and the positioning concave ring 19 is disposed on the mounting groove 9. The positioning protrusion 18 is limited within the positioning concave ring 19. The multiple sets of positioning units form a sawtooth-shaped joint in cross-section, increasing the sealing performance of the connection. The positioning protrusion 18 is integrally formed with the soft sealing gasket 4.

[0019] The inner wall of the valve seat 1 is provided with a second conical surface 20 and a guide surface 21 from top to bottom. The second conical surface 20 is tapered with the third conical surface 17 and the first conical surface 16. The bottom of the third block 7 is provided with several guide claws 22, which slide in contact with the guide surface 21. There are at least two guide claws 22. The guide claws 22 are in clearance fit with the guide surface 21 to ensure that the valve core body is guided during the up and down movement. This guidance is downward guidance. The structure of the guide claws 22 ensures that the slurry flows fully when the valve core is in the open state.

[0020] The valve core assembly drives the sealing gasket to move downwards. The soft sealing gasket 4 first contacts the valve seat 1, and the first conical surface 16 and the second conical surface 20 are tightly attached to achieve a seal. At this time, there is still a gap between the third conical surface 17 and the second conical surface 20. If particulate impurities are stuck in the gap, it will not cause the seal to fail. When there are no particulate impurities in the gap, after moving downwards, the third conical surface 17 and the second conical surface 20 are tightly attached to achieve rigid limiting and sealing, ensuring the service life and reliability of the soft sealing gasket 4.

[0021] The soft sealing gasket 4 is detachable from the valve core body.

[0022] like Figure 4 and 5 As shown, a cone valve type suction and discharge slurry assembly includes a suction and discharge tee 23 and two valve groups 24. Valve assembly 24 includes valve body 28 and the aforementioned valve core. Valve body 28 has a grout inlet 25 at its bottom and a grout outlet 26 on its side wall. One end of the grout suction / discharge tee 23 is connected to the grouting pump, one end is connected to the grout inlet 25 of one valve assembly 24, and the other end is connected to the grout outlet 26 of the other valve assembly 24.

[0023] The outer diameter of the valve seat 1 of the valve core gradually decreases from top to bottom, forming a taper. The slurry inlet 25 is also tapered to match the valve seat 1, forming a rigid seal. The tapered valve seat 1 can be installed upright into the slurry inlet 25, becoming tighter with increasing pressure, with no risk of falling off. A sealing ring 27 is provided on the outer wall of the valve seat 1 to increase the sealing performance between the valve seat 1 and the valve body 28.

[0024] The valve body 28 includes a side and a top, which are sealed together by multiple bolts. The upper end of the spring 2 is fixedly connected to the lower end face of the top, making it easy to disassemble and replace the soft sealing gasket 4.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A V-shaped down-guided one-way valve core, characterized in that: Includes valve seat (1), valve core assembly, and spring (2); The valve seat (1) is fixedly connected to the slurry inlet (25) of the valve body (28), the upper end of the spring (2) is fixedly connected to the top of the valve body (28), the upper end of the valve core assembly is sleeved inside the lower end of the spring (2), and the lower end of the valve core assembly is slidably disposed inside the valve seat (1). The valve core assembly includes a valve block (3) and a soft sealing gasket (4). The valve block (3) has an installation groove (9) on its side wall. The soft sealing gasket (4) is installed in the installation groove (9). The installation groove (9) matches the upper surface and inner wall shape of the soft sealing gasket (4). The outer wall of the soft sealing gasket (4) includes a first vertical surface (15) and a first conical surface (16). A chamfer is provided between the first vertical surface (15) and the first conical surface (16). The lower end of the side wall of the valve block (3) has a third conical surface (17). The third conical surface (17) is offset from the first conical surface (16). The third conical surface (17) is located inside the first conical surface (16). The valve seat (1) has a second conical surface (20) and a guide surface (21) on its inner wall from top to bottom. The second conical surface (20) is tapered with the third conical surface (17) and the first conical surface (16). The bottom of the third block (7) is provided with several guide claws (22). The guide claws (22) slide in contact with the guide surface (21). There are at least two guide claws (22). The guide claws (22) are clearance-fitted with the guide surface (21).

2. The V-type downward-guided one-way valve core as described in claim 1, characterized in that: The valve block (3) includes a first block (5), a second block (6), and a third block (7) arranged sequentially from top to bottom. A spring guide groove (8) is provided at the connection between the second block (6) and the first block (5). The groove surface of the spring guide groove (8) is an inclined surface.

3. The valve core of a V-type downward-guided one-way valve as described in claim 2, characterized in that: The outer diameter of the third block (7) is smaller than the minimum outer diameter of the second block (6).

4. The V-type downward-guided one-way valve core as described in claim 1, characterized in that: The upper surface of the soft sealing gasket (4) includes a first plane (10) and a second plane (11) from the outside to the inside. The first plane (10) is higher than the second plane (11). The inner wall of the soft sealing gasket (4) includes a first cylindrical section (12), a conical transition section (13) and a second cylindrical section (14) from top to bottom. The inner diameter of the first cylindrical section (12) is smaller than the inner diameter of the second cylindrical section (14).

5. The valve core of a V-type downward-guided one-way valve as described in claim 4, characterized in that: Multiple sets of positioning units are provided at the connection between the first plane (10) and the mounting groove (9). Each set of positioning units includes a positioning protrusion (18) and a positioning concave ring (19). The positioning protrusion is fixedly set on the upper surface of the first plane (10), and the positioning concave ring (19) is set on the mounting groove (9). The positioning protrusion (18) is limited within the positioning concave ring (19).

6. A cone valve type slurry suction and discharge assembly, characterized in that: Includes a suction and discharge tee (23) and two valve groups (24); The valve assembly (24) includes a valve body (28) and a valve core as described in any one of claims 1-5. The bottom of the valve body (28) is provided with a grout inlet (25), and the side wall of the valve body (28) is provided with a grout outlet (26). One end of the grout suction and discharge tee (23) is connected to the grouting pump, one end is connected to the grout inlet (25) of one of the valve assemblies (24), and one end is connected to the grout outlet (26) of the other valve assembly (24).

7. A cone valve type slurry suction and discharge assembly as described in claim 6, characterized in that: The outer diameter of the valve seat (1) of the valve core gradually decreases from top to bottom, forming a taper. The slurry inlet (25) is provided with a taper that matches the valve seat (1). A sealing ring (27) is provided on the outer wall of the valve seat (1).

8. A cone valve type slurry suction and discharge assembly as described in claim 6, characterized in that: The valve body (28) includes a side and a top, which are sealed together by multiple bolts. The upper end of the spring (2) is fixedly connected to the lower end face of the top.

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