A V-shaped up-and-down guide type check valve core and a cone valve type suction and discharge pulp assembly

Abstract

The utility model discloses a V type up and down guide formula check valve core and cone valve type suction and discharge slurry subassembly, the valve core, including valve seat, valve body guide bushing, valve core body, valve body guide bushing fixed connection is in the valve body shell top, and the valve body shell bottom is equipped with the slurry inlet, valve seat fixed connection is at the slurry inlet, and the lateral wall of valve body shell is equipped with the slurry outlet, valve core body's upper end sliding connection is in the valve body guide bushing, and the lower end sliding connection is in the valve seat, and the valve core body drives sealing washer to move down, and the soft sealing washer first contacts with the valve seat, realizes the sealing, and the valve core body and the valve seat are more and more tight in the process of continuing to move down, guarantee the service life and reliability of soft sealing washer, and the soft sealing washer realizes detachable through annular pressing plate, fixed assembly, and the convenient replacement, and the valve core body up and down two -way guide structure guarantees the stable operation of valve core body, and the cone valve type suction and discharge slurry subassembly adopts above -mentioned valve core structure, and the overhaul rate of grouting pump is reduced.

Description

Technical Field

[0001] This utility model relates to the field of suction and discharge valve technology, specifically to a V-shaped upper and lower guide 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 into 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 impurity particles in the slurry are small, the valve core has poor stability when returning to its seat under the action of high-speed and high-pressure flowing slurry. The valve core is slow and misalignment can easily lead to leakage. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a V-shaped up-and-down 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-type up-and-down guided one-way valve core, including a valve seat, a valve body guide sleeve, and a valve core body; The valve body guide sleeve is fixedly connected to the top of the valve body shell, the bottom of the valve body shell is provided with a slurry inlet, the valve seat is fixedly connected to the slurry inlet, and the side wall of the valve body shell is provided with a slurry outlet. The upper end of the valve core body is slidably connected to the valve body guide sleeve, and the lower end is slidably connected to the valve seat. A spring is provided on the outer sleeve of the valve core body. The upper end of the spring contacts the valve body outer shell, and the lower end of the spring makes a limiting contact with the lower end of the valve core body. The valve core body includes a valve stem, a soft sealing gasket, and an annular pressure plate. The soft sealing gasket is sleeved on the lower outer wall of the valve stem, and the annular pressure plate is set above the soft sealing gasket by a fixing component. The outer wall of the soft sealing gasket includes a first vertical surface and a first conical surface, and a chamfer is provided between the first vertical surface and the first conical surface; The inner wall of the valve seat is provided with a second conical surface, a transition surface and a guide surface from top to bottom, and the first conical surface of the soft sealing gasket is engaged with the second conical surface; The bottom of the valve stem is provided with several guide claws, which slide in contact with the guide surface. There are at least two guide claws, and the guide claws are in clearance fit with the guide surface.

[0006] Furthermore, the valve stem comprises, from top to bottom, a first rod body, a second rod body, a third rod body, and a rod seat. The outer diameters of the first rod body, the second rod body, and the third rod body increase sequentially. The rod seat comprises a cylindrical section and a frustum section, with the outer diameter of the frustum section gradually decreasing from top to bottom. The soft sealing gasket wraps around the outside of the third rod body and the rod seat. The inner wall of the soft sealing gasket mates with the third rod body and the rod seat. The inner wall of the annular pressure plate mates with the outer wall of the second rod body.

[0007] Furthermore, multiple sets of positioning units are concentrically arranged between the upper surface of the cylindrical section of the rod seat and the inner wall of the soft sealing gasket. Each positioning unit includes a positioning protrusion and a positioning concave ring. The positioning protrusion is fixedly arranged on the upper surface of the cylindrical section, and the positioning concave ring is arranged on the inner wall of the sealing gasket. The positioning protrusion is limited within the positioning concave ring.

[0008] Furthermore, the fixing component includes two symmetrically arranged semicircular clips and retaining springs. The outer wall of the second rod is provided with a first retaining groove, and the outer wall of the semicircular clips is provided with a second retaining groove that cooperates with the retaining springs.

[0009] Furthermore, the transition surface includes a second vertical surface and a third conical surface. The inner diameter of the second vertical surface is larger than the inner diameter of the guide surface. The upper end of the third conical surface is connected to the second vertical surface, and the lower end is connected to the guide surface.

[0010] Furthermore, the valve body guide sleeve is provided with a sliding groove inside, and the first rod is slidably connected in the sliding groove, with the first rod and the sliding groove being in clearance fit.

[0011] Furthermore, the outer diameter of the valve seat gradually decreases from top to bottom, forming a taper, and the slurry inlet is provided with a taper that matches the valve seat.

[0012] 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 shell and the aforementioned valve core. The bottom of the valve body shell is provided with a grout inlet, and the side wall of the valve body shell 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.

[0013] Furthermore, the valve body housing includes a side and a top, which are sealed together by multiple bolts, and the upper end of the valve body guide sleeve 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, vertically guided, one-way valve core and a cone valve-type slurry suction and discharge assembly. The valve core body drives the sealing gasket to move downwards. The soft sealing gasket first contacts the valve seat to achieve a seal. As it continues to move downwards, the valve core body and the valve seat are pressed tighter and tighter, ensuring the service life and reliability of the soft sealing gasket. The soft sealing gasket is detachable through an annular pressure plate and a fixing component, facilitating replacement. The annular pressure plate provides a reverse force when the soft sealing gasket is impacted by slurry. The upper end of the valve core body is guided upwards through a valve body guide sleeve, and the lower end is guided downwards through guide claws. This bidirectional guiding structure ensures stable operation and rapid return of the valve core body. The cone valve-type slurry suction and discharge assembly adopts the above-mentioned valve core structure, reducing the maintenance rate of the grouting pump. Attached Figure Description

[0015] Figure 1 A schematic diagram of the valve core of a V-type up-and-down guided check valve; Figure 2 A schematic diagram of the valve core body and valve seat; Figure 3 This is a schematic diagram of the structure of a cone valve type suction and discharge slurry assembly; In the diagram: 1-valve seat, 2-valve body guide sleeve, 3-valve core body, 4-sealing ring, 5-valve stem, 6-soft sealing gasket, 7-annular pressure plate, 8-first rod body, 9-second rod body, 10-third rod body, 11-rod seat, 12-first vertical surface, 13-first conical surface, 14-positioning convex ring, 15-positioning concave ring, 16-semi-circular clip, 17-circular snap ring, 18-first snap groove, 19-sliding groove, 20-second conical surface, 21-guide surface, 22-second vertical surface, 23-third conical surface, 24-spring, 25-guide claw, 26-slurry suction / discharge tee, 27-top, 28-side, 29-slurry inlet, 30-slurry outlet. 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 and 2 As shown, a V-type up-and-down guided one-way valve core includes a valve seat 1, a valve body guide sleeve 2, and a valve core body 3; The valve body guide sleeve 2 is fixedly connected to the top of the valve body shell. The bottom of the valve body shell has a slurry inlet, and the valve seat 1 is fixedly connected to the slurry inlet. The side wall of the valve body shell has a slurry outlet. The outer diameter of the valve seat 1 gradually decreases from top to bottom, forming a taper. The slurry inlet has a taper that mates with the valve seat 1, forming a rigid seal. The taper valve seat 1 can be installed upright into the slurry outlet, becoming increasingly tighter with pressure, eliminating the risk of detachment. A sealing ring 4 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 shell.

[0018] The upper end of the valve core body 3 is slidably connected inside the valve body guide sleeve 2, and the lower end is slidably connected inside the valve seat 1. A spring 24 is sleeved on the valve core body 3. The upper end of the spring 24 contacts the valve body outer shell, and the lower end of the spring 24 makes a limiting contact with the lower end of the valve core body 3. The spring 24 can quickly help the valve core body 3 to fall and reset.

[0019] The valve core body 3 includes a valve stem 5, a soft sealing gasket 6, and an annular pressure plate 7. The valve stem 5 includes, from top to bottom, a first rod body 8, a second rod body 9, a third rod body 10, and a rod seat 11. The outer diameters of the first rod body 8, the second rod body 9, and the third rod body 10 increase sequentially. The rod seat 11 includes a cylindrical section and a frustum section, with the outer diameter of the frustum section gradually decreasing from top to bottom. The soft sealing gasket 6 wraps around the third rod body 10 and the rod seat 11. The outer wall of the soft sealing gasket 6 includes a first vertical surface 12 and a first conical surface 13, with a chamfer between the first vertical surface 12 and the first conical surface 13. The inner wall of the soft sealing gasket 6 mates with the third rod body 10 and the rod seat 11. The annular pressure plate 7 is positioned above the soft sealing gasket 6 via a fixing assembly, and the inner wall of the annular pressure plate 7 mates with the outer wall of the second rod body 9. The fixing component includes two symmetrically arranged semicircular clips 16 and a retaining spring 17. The outer wall of the second rod body 9 is provided with a first slot 18, and the outer wall of the semicircular clips 16 is provided with a second slot that cooperates with the retaining spring 17. The two semicircular clips 16 are engaged in the first slot 18, and the retaining spring 17 is engaged in the second slot.

[0020] The valve body guide sleeve 2 has a sliding groove 19 inside, and the first rod 8 is slidably connected in the sliding groove 19. The first rod 8 and the sliding groove 19 are in clearance fit, which can guide the valve core during its up and down movement. This guidance is an upward guide.

[0021] The inner wall of the valve seat 1 is provided with a second conical surface 20, a transition surface, and a guide surface 21 from top to bottom. The first conical surface 13 of the soft sealing gasket 6 mates with the second conical surface 20. The bottom of the rod seat 11 is provided with several guide claws 25, which slide in contact with the guide surface 21. There are at least two guide claws 25. The guide claws 25 are in clearance fit with the guide surface 21, which can ensure that the valve core body 3 is guided during the up and down movement. This guidance is downward guidance. The structure of the guide claws 25 ensures the full flow of slurry when the valve core is in the open state.

[0022] The transition surface includes a second vertical surface 22 and a third conical surface 23. The inner diameter of the second vertical surface 22 is larger than the inner diameter of the guide surface 21. The upper end of the third conical surface 23 is connected to the second vertical surface 22, and the lower end is connected to the guide surface 21.

[0023] The valve core body 3 drives the sealing gasket to move downward. The soft sealing gasket 6 first contacts the valve seat 1 to achieve a seal. As it continues to move downward, the valve core body 3 and the valve seat 1 are pressed tighter and tighter, ensuring the service life and reliability of the soft sealing gasket 6.

[0024] The soft sealing gasket 6 is detachable from the valve core body 3. After removing the retaining ring 17, the annular pressure plate 7 can be removed by taking out the semi-circular clip 16 that is stuck in the first clip groove 18. The soft sealing gasket 6 can be removed and replaced. The cost of use is low and the disassembly is quick and convenient.

[0025] This one-way valve core is suitable for working conditions where the impurity particles in the slurry are small. When the impurity particles in the slurry are large, the gap between the sliding groove 19 and the first rod 8 in the upper guide is easily blocked by the impurity particles, causing the upper guide to fail or get stuck.

[0026] In one embodiment, multiple sets of positioning units are concentrically arranged between the upper surface of the cylindrical section of the rod seat 11 and the inner wall of the soft sealing gasket 6. Each positioning unit includes a positioning protrusion 14 and a positioning concave ring 15. The positioning protrusion is fixedly disposed on the upper surface of the cylindrical section, and the positioning concave ring 15 is disposed on the inner wall of the sealing gasket. The positioning protrusion 14 is limited within the positioning concave ring 15. The multiple sets of positioning units form a sawtooth-shaped joint in cross-section, increasing the sealing performance. The positioning protrusion 14 is integrally formed with the soft sealing gasket 6.

[0027] like Figure 3 As shown, a cone valve type suction and discharge slurry assembly includes a suction and discharge tee 26 and two valve groups; The valve assembly includes a valve body shell and the aforementioned valve core. The bottom of the valve body shell has a grout inlet 29, and the side wall of the valve body shell has a grout outlet 30. One end of the grout suction / discharge tee 26 is connected to the grouting pump, the other end is connected to the grout inlet 29 of one valve assembly, and the other end is connected to the grout outlet 30 of the other valve assembly. The valve body shell includes a side portion 28 and a top portion 27, which are sealed together by multiple bolts. The upper end of the valve body guide sleeve 2 is fixedly connected to the lower end face of the top portion 27, facilitating the removal and replacement of the soft sealing gasket 6.

[0028] 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-type up-and-down guided one-way valve core, characterized in that: Includes valve seat (1), valve body guide sleeve (2), and valve core body (3); The valve body guide sleeve (2) is fixedly connected to the top of the valve body shell, the bottom of the valve body shell is provided with a slurry inlet, the valve seat (1) is fixedly connected to the slurry inlet, and the side wall of the valve body shell is provided with a slurry outlet. The upper end of the valve core body (3) is slidably connected to the valve body guide sleeve (2), and the lower end is slidably connected to the valve seat (1); A spring (24) is provided on the outer sleeve of the valve core body (3). The upper end of the spring (24) contacts the outer shell of the valve body, and the lower end of the spring (24) contacts the lower end of the valve core body (3) for limiting contact. The valve core body (3) includes a valve stem (5), a soft sealing gasket (6), and an annular pressure plate (7). The soft sealing gasket (6) is sleeved on the lower outer wall of the valve stem (5), and the annular pressure plate (7) is set above the soft sealing gasket (6) by a fixing component. The outer wall of the soft sealing gasket (6) includes a first vertical surface (12) and a first conical surface (13), and a chamfer is provided between the first vertical surface (12) and the first conical surface (13); The inner wall of the valve seat (1) is provided with a second conical surface (20), a transition surface and a guide surface (21) from top to bottom. The first conical surface (13) of the soft sealing gasket (6) is in contact with the second conical surface (20). The bottom of the valve stem (5) is provided with several guide claws (25), the guide claws (25) slide in contact with the guide surface (21), and there are at least two guide claws (25), and the guide claws (25) are in clearance fit with the guide surface (21).

2. The valve core of a V-type up-and-down guided one-way valve as described in claim 1, characterized in that: The valve stem (5) includes a first rod body (8), a second rod body (9), a third rod body (10), and a rod seat (11) from top to bottom. The outer diameters of the first rod body (8), the second rod body (9), and the third rod body (10) increase sequentially. The rod seat (11) includes a cylindrical section and a frustum section. The outer diameter of the frustum section gradually decreases from top to bottom. The soft sealing gasket (6) is wrapped around the outside of the third rod body (10) and the rod seat (11). The inner wall of the soft sealing gasket (6) is in contact with the third rod body (10) and the rod seat (11). The inner wall of the annular pressure plate (7) is in contact with the outer wall of the second rod body (9).

3. The valve core of a V-type up-and-down guided one-way valve as described in claim 2, characterized in that: Multiple sets of positioning units are provided concentrically between the upper surface of the cylindrical section of the rod seat (11) and the inner wall of the soft sealing gasket (6). Each set of positioning units includes a positioning convex ring (14) and a positioning concave ring (15). The positioning convex ring (14) is fixedly set on the upper surface of the cylindrical section, and the positioning concave ring (15) is set on the inner wall of the sealing gasket. The positioning convex ring (14) is limited within the positioning concave ring (15).

4. The valve core of a V-type up-and-down guided one-way valve as described in claim 2, characterized in that: The fixing component includes two symmetrically arranged semicircular clips (16) and a retaining spring (17). The outer wall of the second rod (9) is provided with a first slot (18), and the outer wall of the semicircular clip (16) is provided with a second slot that cooperates with the retaining spring (17).

5. The valve core of a V-type up-and-down guided one-way valve as described in claim 1, characterized in that: The transition surface includes a second vertical surface (22) and a third conical surface (23). The inner diameter of the second vertical surface (22) is larger than the inner diameter of the guide surface (21). The upper end of the third conical surface (23) is connected to the second vertical surface (22), and the lower end is connected to the guide surface (21).

6. The valve core of a V-type up-and-down guided one-way valve as described in claim 2, characterized in that: The valve body guide sleeve (2) is provided with a sliding groove (19) inside. The first rod (8) is slidably connected in the sliding groove (19), and the first rod (8) and the sliding groove (19) are in clearance fit.

7. The valve core of a V-type up-and-down guided one-way valve as described in claim 1, characterized in that: The outer diameter of the valve seat (1) gradually decreases from top to bottom, forming a taper. The slurry inlet is provided with a taper that matches the valve seat (1).

8. A cone valve type slurry suction and discharge assembly, characterized in that: Includes a suction and discharge tee (26) and two valve groups; The valve assembly includes a valve body shell and a valve core as described in any one of claims 1-7. The bottom of the valve body shell is provided with a slurry inlet (29), and the side wall of the valve body shell is provided with a slurry outlet (30). One end of the slurry suction and discharge tee (26) is connected to the grouting pump, one end is connected to the slurry inlet (29) of one of the valve assemblies, and one end is connected to the slurry outlet (30) of another valve assembly.

9. A cone valve type slurry suction and discharge assembly as described in claim 8, characterized in that: The valve body housing includes a side (28) and a top (27), which are sealed together by multiple bolts. The upper end of the valve body guide sleeve (2) is fixedly connected to the lower end face of the top (27).

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