A structure for suction and discharge valve assembly for large particle thick slurry

Abstract

This utility model relates to a valve assembly structure for suction and discharge of large-particle thick slurry, including a three-way valve body, a suction pipe, a discharge pipe, a valve seat, a baffle, and a valve ball. The lower end of the three-way valve body is connected to the suction pipe through a suction port, and the upper end of the three-way valve body is connected to the discharge pipe through a discharge port. A valve seat is provided at the connection between the discharge pipe and the discharge port, and at the connection between the suction port and the suction pipe. Several guide blocks are provided on the side surface of the valve seat near the valve ball. One side surface of the guide block is inclined and extends to the valve hole in the center of the valve seat. The other side surface of the guide block is perpendicular to the valve seat and fits against the inner wall of the three-way valve body or the inner wall of the discharge pipe. A baffle is provided at the lower end of the inner cavity of the three-way valve body and at the upper end of the inner cavity of the discharge pipe. A valve ball is provided between the baffle and the valve seat. A positioning port is opened in the center of the baffle. Both ends of the positioning port are tapered and chamfered. Several fan-shaped flow ports are opened around the flow port to increase the flow rate of slurry and meet the suction and discharge requirements of large-particle slurry.

Description

Technical Field

[0001] This utility model relates to the technical field of suction and discharge valve groups, and in particular to a structure for suction and discharge valve groups for large particle thick slurry. Background Technology

[0002] The slurry 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 slurry. Traditional slurry suction and discharge valve assemblies use either ball valves or cone valves for sealing. However, cone valves are more prone to wear when used in environments with large-particle, thick slurry, and slurry particles may become embedded between the cone surface and the valve seat, compromising the flatness of the sealing surface and ultimately affecting the sealing effect. Therefore, for suction and discharge operations involving large-particle, thick slurry, a valve ball with high hardness is required for sealing. Chinese patent document CN202022548295.X discloses a high-pressure suction and discharge valve assembly for grouting pumps. This assembly uses a horizontally positioned locating pin that engages with the valve seat to limit the movement of the valve ball. However, when the valve ball closes the port on the valve seat, it is prone to misalignment, preventing the valve assembly from sealing the port immediately and causing some grout to flow back. Existing technology uses a baffle with several through holes instead of the locating pin to allow smooth grout flow. However, for large-particle, thick grout, the through-hole structure can cause blockage, reducing grout flow efficiency and ultimately affecting the working efficiency of the grouting system. Therefore, improvements are necessary to address these shortcomings. Utility Model Content

[0003] To address the aforementioned problems, this utility model discloses a slurry suction and discharge valve assembly structure for large particle slurry. By setting a guide structure in the slurry suction and discharge valve assembly, the valve ball is prevented from deviating, enabling it to seal the pipe opening in a timely manner, thus meeting the suction and discharge requirements of large particle slurry.

[0004] The specific technical solution is as follows: A valve assembly structure for suction and discharge of large-particle thick slurry includes a three-way valve body, a suction pipe, a discharge pipe, a valve seat, a baffle, and a valve ball. The lower end of the three-way valve body is connected to the suction pipe through a suction port, and the upper end of the three-way valve body is connected to the discharge pipe through a discharge port. A valve seat is provided at the connection between the discharge pipe and the discharge port, and at the connection between the suction port and the suction pipe. Several guide blocks for guiding the valve ball are evenly distributed on the side surface of the valve seat near the valve ball. One side surface of the guide block is inclined and extends to the valve hole at the center of the valve seat. The other side surface of the guide block is perpendicular to the valve seat and fits against the inner wall of the three-way valve body or the inner wall of the discharge pipe. A baffle is provided at the lower end of the inner cavity of the three-way valve body and the upper end of the inner cavity of the discharge pipe. The valve ball is placed between the baffle and the valve seat. A positioning port is opened at the center of the baffle. The two ends of the positioning port are tapered and chamfered. Several fan-shaped flow ports are opened around the flow port of the baffle.

[0005] Furthermore, the valve hole is chamfered at one end near the valve ball, and the chamfer angle is equal to the angle of inclination of one side surface of the guide block.

[0006] Furthermore, the guide block has a right-angled triangular structure.

[0007] Furthermore, the several fan-shaped flow ports are evenly distributed in a ring.

[0008] Furthermore, the inner walls of the suction port and the discharge port are provided with mounting grooves for fixing the valve seat, and the suction pipe and the discharge pipe are respectively embedded in the two mounting grooves, and the suction pipe and the discharge pipe press against the valve seat respectively.

[0009] Furthermore, the two baffles are respectively connected and fixed to the inner wall of the three-way valve body and the inner wall of the slurry discharge pipe by welding.

[0010] The beneficial effects of this utility model are reflected in: In this invention, the valve ball, propelled by the slurry and guided by the guide block, can promptly seal the central valve hole, preventing the valve ball from deviating and causing the pipe seal to fail.

[0011] The baffle in this invention features a fan-shaped flow port around its perimeter, which increases the flow rate of slurry to meet the requirements of suction and discharge operations for large-particle slurry. Furthermore, both ends of the positioning port are designed with a conical structure, with one end used to position the valve ball and the other end used to close the pipe opening. This allows large-particle slurry to pass through the positioning port more smoothly, ensuring that the valve ball remains on the same axis as the suction and discharge valve assembly during its reciprocating motion. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a front view of the valve assembly in Embodiment 1 of this utility model.

[0014] Figure 3 This is a cross-sectional view of the baffle in this utility model.

[0015] Figure 4 This is the front view of the baffle in this utility model.

[0016] Figure 5 This is a perspective view of the valve seat in Embodiment 2 of this utility model.

[0017] Figure 6 This is a cross-sectional view of the valve seat in Embodiment 2 of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Three-way valve body, 11. Suction port, 12. Discharge port, 13. Mounting groove, 2. Suction pipe, 3. Discharge pipe, 4. Valve seat, 41. Valve hole, 42. Guide plate, 43. Guide boss, 43. Round opening, 431. Baffle, 5. Fan-shaped flow port, 51. Positioning port, 52. Valve ball, 6. Detailed Implementation

[0019] To make the technical solution of this utility model clearer and more explicit, the utility model will be further described below with reference to the accompanying drawings. Any solution derived by equivalent substitution and conventional reasoning of the technical features of this utility model falls within the protection scope of this utility model. The fixed connections and fixed settings mentioned in this utility model are all common connection methods in the mechanical field, including welding, bolt and nut connections, and screw connections.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Example 1

[0022] Please see the appendix Figure 1-4 This embodiment provides a structure for a slurry suction and discharge valve assembly for large particle thick slurry, including a three-way valve body 1, a suction pipe 2, a discharge pipe 3, a valve seat 4, a baffle 5, and a valve ball 6. The lower end of the three-way valve body 1 is connected to the suction pipe 2 through a suction port 11, and the upper end of the three-way valve body 1 is connected to the discharge pipe 3 through a discharge port 12. A valve seat 4 is provided at the connection between the discharge pipe 3 and the discharge port 12, and at the connection between the suction port 11 and the suction pipe 2. Six guide blocks for guiding the valve ball 6 are evenly distributed along the center of the side surface of the valve seat 4 near the valve ball 6. The guide blocks are in the form of right-angled triangles. The lower end of the guide block is fixedly connected to the surface of the valve seat 4 by welding. One side surface of the guide block is inclined and extends to the valve hole 41 at the center of the valve seat 4. The other side surface of the guide block is perpendicular to the valve seat 4 and is attached to the inner wall of the three-way valve body 1 or the inner wall of the discharge pipe 3. This allows the valve ball 6, propelled by the slurry and guided by the guide block, to promptly seal the central valve hole 41, preventing the valve ball 6 from deviating and causing the pipe seal to fail.

[0023] Horizontal baffles 5 are provided at the lower end of the inner cavity of the three-way valve body 1 and the upper end of the inner cavity of the slurry discharge pipe 3. The baffles 5 are connected and fixed to the inner wall of the three-way valve body 1 and the inner wall of the slurry discharge pipe 3 by welding. A metal valve ball 6 is provided between the baffles 5 and the valve seat 4. A positioning port 52 is provided in the center of the baffles 5. The two ends of the positioning port 52 are both set with conical chamfers. One end is mainly used to position the valve ball 6. The other end allows large particles of slurry to pass through the positioning port 52 more smoothly when the pipe is closed, so as to ensure that the valve ball 6 is closed as soon as possible. Four fan-shaped flow ports 51 are provided around the flow port of the baffles 5. The four fan-shaped flow ports 51 are evenly distributed in a ring around the flow port, which increases the flow of slurry to meet the needs of suction and discharge of large particles of slurry.

[0024] In this embodiment, the valve hole 41 is chamfered at one end near the valve ball 6, and the chamfer angle is equal to the angle of inclination of one side surface of the guide block.

[0025] In this embodiment, mounting grooves 13 for fixing valve seats 4 are provided on the inner walls of both the suction port and the discharge port, and the suction pipe 2 and the discharge pipe 3 are respectively embedded in the two mounting grooves 13. The suction pipe 2 and the discharge pipe 3 press against the valve seat 4, ensuring the reliability of the sealing of the suction and discharge valve assembly.

[0026] Example 2

[0027] like Figure 5-6 As shown, the difference between this embodiment and Embodiment 1 is that a guide boss 43 is provided on one end surface of the valve seat 4 to replace the six guide blocks. The outer wall of the guide boss 43 is circular and fits against the inner wall of the three-way valve body 1 or the inner wall of the slurry pipe 3. A circular opening 431 corresponding to the position of the valve hole 41 is opened at the center of the guide boss 43. The inner wall of the guide boss 43 is tapered and inclined, extending to the circular opening 431, and the inclination angle of the inner wall of the guide boss 43 is consistent with the chamfer inclination angle of the valve hole 41. Thus, the guide boss 43 guides the valve ball 6 to the valve hole 41 through its tapered and inclined inner wall.

[0028] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A valve assembly structure for suction and discharge of large-particle thick slurry, comprising a three-way valve body (1), a suction pipe (2), a discharge pipe (3), a valve seat (4), a baffle (5), and a valve ball (6), wherein the lower end of the three-way valve body is connected to the suction pipe (2) through a suction port (11), and the upper end of the three-way valve body (1) is connected to the discharge pipe (3) through a discharge port (12), and a valve seat (4) is provided at the connection between the discharge pipe (3) and the discharge port (12) and at the connection between the suction port (11) and the suction pipe (2), characterized in that, The valve seat (4) has several guide blocks evenly distributed on one side surface near the valve ball (6) for guiding the valve ball (6). One side surface of the guide block is inclined and extends to the valve hole (41) in the center of the valve seat (4). The other side surface of the guide block is perpendicular to the valve seat (4) and fits against the inner wall of the three-way valve body (1) or the inner wall of the slurry pipe (3). The lower end of the inner cavity of the three-way valve body (1) and the upper end of the inner cavity of the slurry pipe (3) are provided with baffles (5). The valve ball (6) is placed between the baffle (5) and the valve seat (4). The baffle (5) has a positioning port (52) in the center. The two ends of the positioning port (52) are both set with conical chamfers. The baffle (5) has several fan-shaped flow ports (51) around the flow port.

2. The structure of a slurry suction and discharge valve assembly for large particle thick slurry as described in claim 1, characterized in that, The valve hole (41) is set with an inclined chamfer at one end near the valve ball (6), and the chamfer angle is equal to the inclined angle of one side surface of the guide block.

3. The structure of a slurry suction and discharge valve assembly for large-particle thick slurry as described in claim 2, characterized in that, The guide block has a right-angled triangular structure.

4. The structure of a slurry suction and discharge valve assembly for large particle thick slurry as described in claim 1, characterized in that, Several of the aforementioned fan-shaped flow ports (51) are evenly distributed in a ring.

5. The structure of a slurry suction and discharge valve assembly for large-particle thick slurry as described in claim 1, characterized in that, The inner walls of the suction port (11) and the discharge port (12) are provided with mounting grooves (13) for fixing the valve seat (4), and the suction pipe (2) and the discharge pipe (3) are respectively embedded in the two mounting grooves (13), and the suction pipe (2) and the discharge pipe (3) press against the valve seat (4).

6. The structure of a slurry suction and discharge valve assembly for large particle thick slurry as described in claim 1, characterized in that, The two baffles (5) are respectively connected and fixed to the inner wall of the three-way valve body (1) and the inner wall of the slurry pipe (3) by welding.

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