Soft sealing gate valve with positioning and locking function

Abstract

The utility model discloses a soft sealing gate valve of realizing positioning locking function, including gate valve and the first butt flange of installing at gate valve both ends, the surface of gate valve is equipped with the valve seat, the top of valve seat is equipped with solenoid valve, the surface of the center of gate valve is equipped with the locating seat, the utility model discloses the spherical filter screen of installing plate bottom end is installed at the opening of gate valve surface locating seat, the spherical filter screen is at the center of gate valve and divides the flow at this time, and when the sealing strip of installing plate bottom surface is sealed with the locating seat at this time, and then when medium is flowing in the inside of gate valve, fluid reduces resistance through the spherical filter screen at this time, and the particle impurity containing in medium is filtered, and the particle impurity gathered is removed through the blowdown valve, improves the service life of soft sealing gate valve of realizing positioning locking function, avoids appearing the core jam.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic valve technology, specifically relating to a soft-seal gate valve that can achieve positioning and locking functions. Background Technology

[0002] A soft-seal gate valve is a type of valve that uses elastic materials (such as rubber or PTFE) as its sealing element, achieving a seal through soft contact between the gate and the valve seat. It combines the linear motion advantages of a gate valve with the high sealing performance of a soft seal, making it particularly suitable for applications requiring zero leakage. The valve stem is driven by a handwheel or actuator, causing the gate to move vertically up and down along the valve body channel, thus opening and closing the valve. When closed, the soft seal on the gate fits tightly against the metal valve seat, forming a reliable seal.

[0003] Specifically, traditional soft-seal gate valves often employ right-angle bends or stepped transition structures in their fluid passage design. This geometry presents significant fluid dynamic defects. When fluid flows through such channels at a certain velocity, separation vortices form at right-angle bends due to the abrupt change in flow direction, while boundary layer separation occurs in stepped transition areas. The combined effect of these two factors increases vortex intensity. Simultaneously, multiple fluid dynamic dead zones exist within the channel, particularly on the back surface of right-angle bends and downstream of stepped transitions. When the medium contains fine particulate impurities, the low-speed vortices in these areas cause impurities to deposit. Over time, these deposits accumulate into lumps. When the particle size increases to 2-5 times the valve core sealing gap, they may embed into the mating surface between the valve core and seat, increasing valve core movement resistance and, in severe cases, causing jamming and failure. Utility Model Content

[0004] The purpose of this invention is to provide a soft-seal gate valve that can achieve a positioning and locking function. It aims to address the problem that traditional soft-seal gate valves often employ right-angle bends or stepped transition structures in their fluid channel design, which have significant drawbacks in terms of fluid dynamics. When fluid flows through such channels at a certain velocity, separation vortices form at right-angle bends due to the abrupt change in flow direction, while boundary layer separation occurs in stepped transition areas. The combined effect of these two factors increases the vortex intensity. Simultaneously, multiple fluid dynamic dead zones exist within the channel, particularly on the back surface of right-angle bends and downstream of stepped transitions. When the medium contains small particulate impurities, the low-speed vortices in these areas can cause impurity deposition.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a soft-seal gate valve capable of positioning and locking, comprising a gate valve and first mating flanges installed at both ends of the gate valve, wherein a valve seat is installed on the surface of the gate valve, and a solenoid valve is installed on the top of the valve seat; A positioning seat is mounted on the center surface of the gate valve, and a mounting plate is mounted on the surface of the positioning seat. A spherical filter screen is connected to the bottom end. An assembly block is installed on the outer wall of the mounting plate. A locking screw is connected through the surface of the assembly block. A drain valve is installed on the bottom surface of the gate valve near the spherical filter screen. An installation groove is opened on the mating surface of the mounting plate. A sealing strip is installed inside the installation groove.

[0006] To extend service life, the spherical filter screen, which is a preferred soft-seal gate valve of this invention capable of positioning and locking, is located at the center of the gate valve, and the surface size of the spherical filter screen is adapted to the opening size of the inner wall of the gate valve.

[0007] To facilitate the stable installation of the spherical filter screen, the locking screw, which is the preferred soft-seal gate valve of this utility model that can achieve positioning and locking functions, passes through the assembly block and is threaded to the side of the positioning seat.

[0008] To improve the sealing performance of the mounting plate, the soft-seal gate valve of this utility model, which can realize the positioning and locking function, preferably has a silicone material for the sealing strip. The sealing strip and the mounting groove on the bottom surface of the mounting plate form an interlocking structure, and the mounting plate is sealed and connected to the positioning seat through the mating surface of the sealing strip.

[0009] To facilitate quick replacement of the modular flange, in the preferred embodiment of the soft-seal gate valve of this utility model that enables positioning and locking, the first mating flange is connected to a second mating flange at its mating end, and the other end of the second mating flange is connected to a modular flange.

[0010] To facilitate stable docking of the module flanges, the preferred soft-seal gate valve of this utility model, which can achieve positioning and locking functions, is provided with a docking buckle at the end of the second docking flange near the first docking flange, and a docking groove is provided at the end of the first docking flange near the docking buckle.

[0011] In order to ensure that the positioning component can be effectively installed on the mounting base without detaching, the soft-seal gate valve of this utility model, which can realize the positioning and locking function, is preferably provided with a mounting bolt connected to the surface opening of the second docking flange. The mounting bolt passes through the second docking flange and connects to the first docking flange.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention involves installing a spherical filter screen at the bottom of the mounting plate at the opening of the positioning seat on the surface of the gate valve. The spherical filter screen is positioned at the center of the gate valve's flow distribution. The sealing strip on the bottom of the mounting plate is then sealed to the positioning seat. A locking screw is then threaded through the assembly block on the side of the mounting plate and connected to the side of the positioning seat. This facilitates stable installation of the spherical filter screen. When the medium flows inside the gate valve, the fluid passes through the spherical filter screen, reducing resistance and filtering out particulate impurities. These impurities are then removed by a drain valve, extending the service life of the soft-seal gate valve with positioning and locking functions and preventing valve core jamming. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. The embodiments are used together to explain the present invention and do not constitute a limitation thereof. In the accompanying drawings: Figure 1 is a schematic diagram of the overall assembly structure of the gate valve of this utility model.

[0014] Figure 2 is a side view sectional structural diagram of the mounting base of this utility model.

[0015] Figure 3 is a schematic diagram of the sealing strip structure of this utility model.

[0016] Figure 4 is a schematic diagram of the exploded structure of the modular flange installation of this utility model.

[0017] In the diagram: 1. Gate valve; 2. First mating flange; 3. Valve seat; 4. Solenoid valve; 5. Positioning seat; 6. Mounting plate; 7. Spherical filter screen; 8. Assembly block; 9. Locking screw; 10. Drain valve; 11. Mounting groove; 12. Sealing strip; 13. Second mating flange; 14. Module flange; 15. Mating buckle; 16. Mating groove; 17. Mounting bolt. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please refer to Figure 1- Figure 4The present invention provides the following technical solution: a soft-seal gate valve that can realize positioning and locking function, including a gate valve 1 and a first mating flange 2 installed at both ends of the gate valve 1, a valve seat 3 installed on the surface of the gate valve 1, and a solenoid valve 4 installed on the top of the valve seat 3; A positioning seat 5 is installed on the center surface of the gate valve 1. A mounting plate 6 is installed on the surface of the positioning seat 5. A spherical filter screen 7 is connected to the bottom end of the mounting plate 6. An assembly block 8 is installed on the outer side wall of the mounting plate 6. A locking screw 9 is connected through the surface of the assembly block 8. A drain valve 10 is installed on the bottom surface of the gate valve 1 near the spherical filter screen 7. An installation groove 11 is opened on the mating surface of the mounting plate 6. A sealing strip 12 is installed inside the installation groove 11.

[0020] Preferably, the spherical filter screen 7 is located at the center of the gate valve 1, and the surface size of the spherical filter screen 7 is adapted to the opening size of the inner wall of the gate valve 1. In practical use, the use of the spherical filter screen 7 facilitates the filtration of particulate impurities in the medium, thereby extending the service life of the soft-seal gate valve that can achieve the positioning and locking function. Preferably, the locking screw 9 passes through the assembly block 8 and is threaded onto the side of the positioning seat 5. In actual use, by passing the locking screw 9 through the assembly block 8 and connecting it to the positioning seat 5, the spherical filter screen 7 can be easily and stably installed.

[0021] Preferably, the sealing strip 12 is made of silicone. The sealing strip 12 and the mounting groove 11 on the bottom surface of the mounting plate 6 form a fitting structure. The mounting plate 6 is sealed and connected to the positioning seat 5 through the mating surface of the sealing strip 12. In actual use, the use of the sealing strip 12 ensures the sealing between the mounting plate 6 and the gate valve 1, thus ensuring the effectiveness of the spherical filter screen 7. Preferably, the first mating flange 2 is connected to a second mating flange 13 at one end, and the other end of the second mating flange 13 is connected to a modular flange 14. In practical use, the use of the mating flange 13 facilitates the stable assembly of the modular flange 14.

[0022] Preferably, the second mating flange 13 has a mating buckle 15 connected to one end near the first mating flange 2, and the first mating flange 2 has a mating groove 16 at one end near the mating buckle 15. In actual use, by fitting the mating buckle 15 into the mating groove 16 at one end of the first mating flange 2, the modular flange 14 can be quickly assembled to achieve a positioning and locking effect.

[0023] Preferably, a mounting bolt 17 is connected to the surface opening of the second docking flange 13, and the mounting bolt 17 passes through the second docking flange 13 to connect with the first docking flange 2. In practical use, by passing the mounting bolt 17 through the second docking flange 13 and connecting it with the first docking flange 2, it is convenient to quickly disassemble the module flange 14 and replace it with flanges of different diameters, which improves the practicality of the soft-seal gate valve that can realize the positioning and locking function. At the same time, the working principle of the soft-seal gate valve that can realize the positioning and locking function is that under the action of the return spring, the valve core is in the initial position. At this time, one of the three channels is connected to another channel, and the third channel is closed. The electromagnetic coil is energized to generate a magnetic field, which overcomes the spring force and attracts the valve core to move to another position, realizing the channel switching. By controlling the on and off of the coil through high-frequency alternating current, the valve core quickly switches between two positions, thereby realizing high-frequency reversal or pulse control of the fluid.

[0024] The working principle of this utility model is as follows: First, the spherical filter screen 7 at the bottom of the mounting plate 6 is installed at the opening of the positioning seat 5 on the surface of the gate valve 1. At this time, the spherical filter screen 7 is located at the central flow branch of the gate valve 1. Then, the sealing strip 12 on the bottom surface of the mounting plate 6 is sealed and connected to the positioning seat 5. Then, the locking screw 9 passes through the assembly block 8 on the side of the mounting plate 6 and is threaded to the side of the positioning seat 5. This facilitates the stable installation of the spherical filter screen 7. When the medium flows inside the gate valve 1, the fluid passes through the spherical filter screen 7, which reduces resistance and filters the particulate impurities contained in the medium. The collected particulate impurities are then removed by the drain valve 10, which improves the service life of the soft-seal gate valve that can achieve the positioning and locking function and avoids valve core jamming. In addition, the docking buckle 15 at one end of the second docking flange 13 is fitted and docked with the docking groove 16 on the docking surface of the first docking flange 2, which drives the module flange 14 to be assembled. Then, the mounting bolts 17 are installed. After passing through the second docking flange 13, it connects with the first docking flange 2. At this time, it is convenient to quickly disassemble the module flange 14, replace it with flanges of different diameters, improve the positioning and locking effect, and enhance the practicality of the soft-seal gate valve that can realize the positioning and locking function.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model shall be included within the protection scope of this utility model.

Claims

1. A soft-seal gate valve capable of positioning and locking, comprising a gate valve (1) and first mating flanges (2) installed at both ends of the gate valve (1), characterized in that: The gate valve (1) is equipped with a valve seat (3) on its surface, and a solenoid valve (4) is installed on the top of the valve seat (3). A positioning seat (5) is installed on the center surface of the gate valve (1). An installation plate (6) is installed on the surface of the positioning seat (5). A spherical filter screen (7) is connected to the bottom end of the installation plate (6). An assembly block (8) is installed on the outer side wall of the installation plate (6). A locking screw (9) is connected through the surface of the assembly block (8). A drain valve (10) is installed on the bottom surface of the gate valve (1) near the spherical filter screen (7). An installation groove (11) is opened on the mating surface of the installation plate (6). A sealing strip (12) is installed inside the installation groove (11).

2. The soft-seal gate valve with positioning and locking function according to claim 1, characterized in that: The spherical filter screen (7) is located at the center of the gate valve (1), and the surface size of the spherical filter screen (7) is adapted to the opening size of the inner wall of the gate valve (1).

3. The soft-seal gate valve with positioning and locking function according to claim 1, characterized in that: The locking screw (9) passes through the assembly block (8) and is threaded to the side of the positioning seat (5).

4. The soft-seal gate valve with positioning and locking function according to claim 1, characterized in that: The sealing strip (12) is made of silicone. The sealing strip (12) and the mounting groove (11) on the bottom surface of the mounting plate (6) form a fitting structure. The mounting plate (6) is sealed and connected to the positioning seat (5) through the sealing strip (12).

5. The soft-seal gate valve with positioning and locking function according to claim 1, characterized in that: The first docking flange (2) is connected to a second docking flange (13) at one end, and the second docking flange (13) is connected to a module flange (14) at the other end.

6. The soft-seal gate valve with positioning and locking function according to claim 5, characterized in that: The second docking flange (13) is connected to a docking buckle (15) at one end near the first docking flange (2), and the first docking flange (2) is provided with a docking groove (16) at one end near the docking buckle (15).

7. The soft-seal gate valve with positioning and locking function according to claim 5, characterized in that: The second mating flange (13) has an opening on its surface connected to a mounting bolt (17), which passes through the second mating flange (13) and connects to the first mating flange (2).

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