Impact-resistant flat valve

Abstract

The utility model relates to the technical field of valves, in particular to an impact-resistant flat valve which comprises a valve plate body, a clamping groove formed in one end of the valve plate body, a through hole formed in one end of the valve plate body, insertion grooves symmetrically formed in the two ends of the valve plate body, impact-resistant combined plates inserted into the insertion grooves, and an operation groove formed in one end of the valve plate body. First threaded holes are symmetrically formed in the two ends of the operation groove, and the first threaded holes are in threaded connection with bidirectional fixing screws; according to the impact-resistant flat valve, the inserting grooves are formed in the two sides of the valve plate body of the flat valve, the impact-resistant combined plates are inserted into the inserting grooves, each impact-resistant combined plate is composed of the steel base plate, the honeycomb metal buffer layer and the tungsten carbide alloy surface layer, and the tungsten carbide alloy surface layers have high impact-resistant strength; the honeycomb metal buffer layer and the buffer rubber block inserted into the valve plate body can well buffer impact force so as to reduce damage caused by the impact force, and the impact-resistant combined plate can be conveniently and rapidly installed and fixed through the arranged two-way fixing screw rod and the spring.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to an impact-resistant flat plate valve. Background Technology

[0002] Flat plate valves are a type of shut-off valve with a simple structure and rapid opening and closing. Their core component is a flat plate valve, which is opened and closed by linear movement of the plate perpendicular to the direction of medium flow. This valve adopts a planar sealing structure, which features low flow resistance, good sealing performance, and convenient maintenance. It is suitable for various medium pipeline systems in industries such as petroleum, chemical, and power, and is especially suitable for working conditions containing solid particles or high-viscosity fluids. Compared with traditional gate valves, flat plate valves have shorter opening and closing strokes and stronger erosion resistance. Their compact design also saves installation space.

[0003] Chinese Patent CN206889714U discloses a flat gate valve. A gate plate is vertically slidable within the valve body and can slide up and down along the inner wall of the valve body to control the opening and closing of the valve. Two valve seats are respectively disposed on either side of the gate plate within the valve body. These valve seats are horizontally slidable within a cavity at the end of a through-hole within the valve body and can slide freely along the inner wall of the cavity. A wave spring is disposed at one end of the valve seat, with its two sides abutting against the inner wall of the valve body and the valve seat, providing horizontal thrust to the valve seat. A gate rod is vertically disposed within the valve body, with its lower end fixedly connected to the gate plate. A valve cover is fixed to the upper end of the valve body. A gate rod nut is rotatably disposed within the valve cover and threaded onto the upper end of the gate rod. A handwheel is fixed to the outside of the gate rod nut. This invention achieves sealing through the valve seat and wave spring in conjunction with the gate plate, thus being independent of the medium pressure and unaffected by external factors.

[0004] The above-mentioned scheme and existing flat plate valves typically use the valve stem thread to raise and lower the valve plate between two sets of valve seats to control the opening and closing of the valve, thereby controlling the passage and blocking of the inflowing medium. Most existing valve plates are one-piece structures, and their contact surface with the valve seat is easily worn by the impact of the medium, resulting in a decrease in sealing performance. After long-term use, the valve plate is prone to deformation, affecting the valve's opening and closing function. There is a lack of corresponding impact-resistant valve plate structures in flat plate valves, which need to be improved and optimized. Utility Model Content

[0005] The purpose of this invention is to provide an impact-resistant flat plate valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an impact-resistant flat plate valve includes a valve plate body, one end of the valve plate body is provided with a slot, one end of the valve plate body is provided with a through hole, both ends of the valve plate body are symmetrically provided with slots, an impact-resistant combination plate is inserted into the slot, one end of the valve plate body is provided with an operating groove, both ends of the operating groove are symmetrically provided with first threaded holes, and the first threaded holes are threadedly connected with bidirectional fixing screws.

[0007] Preferably, the inner wall of the slot is provided with a sealing groove, and a sealing strip is inserted into the sealing groove.

[0008] Preferably, buffer rubber blocks are symmetrically inserted at both ends of the valve plate body, and a nut is provided in the middle of the bidirectional fixing screw.

[0009] Preferably, the impact-resistant composite plate includes a steel substrate, a honeycomb metal buffer layer, and a tungsten carbide alloy surface layer; one end of the steel substrate is fixedly connected to the honeycomb metal buffer layer, one end of the honeycomb metal buffer layer is fixedly connected to the tungsten carbide alloy surface layer, and the other end of the steel substrate is pressed against a buffer rubber block.

[0010] Preferably, one end of the impact-resistant composite plate is provided with a second threaded hole.

[0011] Preferably, a bidirectional fixing screw is threaded to one end of the second threaded hole, and a spring is fixedly connected to the inner wall of the second threaded hole, with the other end of the spring pressing against the bidirectional fixing screw.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The impact-resistant flat plate valve proposed in this utility model mainly involves setting slots on both sides of the valve plate body and inserting impact-resistant composite plates. The impact-resistant composite plates are composed of a steel base plate, a honeycomb metal buffer layer, and a tungsten carbide alloy surface layer. The tungsten carbide alloy surface layer has strong impact resistance, and the honeycomb metal buffer layer and the buffer rubber block inserted into the valve plate body can effectively buffer the impact force to reduce the damage caused by the impact force. The bidirectional fixing screws and springs facilitate the quick and easy installation and fixing of the impact-resistant composite plates. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an impact-resistant flat plate valve;

[0015] Figure 2 An exploded view of the structure of an impact-resistant flat plate valve;

[0016] Figure 3 This is a cross-sectional view of the impact-resistant composite panel;

[0017] Figure 4 This is a partial structural cross-sectional view of an impact-resistant flat plate valve.

[0018] Figure 5 Another partial structural cross-sectional view of an impact-resistant flat plate valve;

[0019] Figure 6 for Figure 5 Enlarged diagram of part A in the middle.

[0020] In the figure: valve plate body 1, slot 2, through hole 3, slot 4, impact resistant combination plate 5, steel base plate 501, honeycomb metal buffer layer 502, tungsten carbide alloy surface layer 503, operating groove 6, first threaded hole 7, bidirectional fixing screw 8, sealing groove 9, sealing strip 10, buffer rubber block 11, second threaded hole 12, spring 13, swivel cap 14. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figures 1-6 The present invention provides the following two preferred embodiments:

[0023] Example 1: An impact-resistant flat plate valve includes a valve plate body 1, a groove 2 at one end of the valve plate body 1, a through hole 3 at one end of the valve plate body 1, slots 4 symmetrically arranged at both ends of the valve plate body 1, an impact-resistant composite plate 5 inserted into the slots 4, an operating groove 6 at one end of the valve plate body 1, first threaded holes 7 symmetrically arranged at both ends of the operating groove 6, and a bidirectional fixing screw 8 threadedly connected to the first threaded holes 7; a sealing groove 9 is provided on the inner wall of the slot 4, and a sealing strip 10 is inserted into the sealing groove 9; buffer rubber blocks 11 are symmetrically inserted at both ends of the valve plate body 1, and a screw cap 14 is provided in the middle of the bidirectional fixing screw 8; the impact-resistant composite plate 5 includes a steel base plate 501, a honeycomb metal buffer layer 502, and a tungsten carbide alloy surface layer 503; the honeycomb metal buffer layer 502 is fixedly connected to one end of the steel base plate 501, the tungsten carbide alloy surface layer 503 is fixedly connected to one end of the honeycomb metal buffer layer 502, and the other end of the steel base plate 501 is pressed against the buffer rubber block 11.

[0024] In use, the valve stem with the locking head in the flat plate valve is engaged with the slot 2 at one end of the valve plate body 1. Turning the valve rotates the valve stem to raise or lower the valve plate body 1, thus controlling the raising and lowering of the valve plate body 1. This ensures that the through hole 3 is fully aligned with the valve seat or the impact-resistant combination plate 5 is fully aligned with the valve seat, thereby controlling the passage and blockage of the medium. The impact-resistant combination plate 5 is slidably engaged with the slot 4 inside the valve plate body 1 and fixed by the bidirectional fixing screw 8 in the operating groove 6. The sealing strip 10 inserted into the sealing groove 9 on the inner wall of the slot 4 provides a sealing effect, preventing the medium from flowing into the gap between the slot 4 and the impact-resistant combination plate 5 on the valve plate body 1. The buffer rubber block 11, which is fixedly connected in the middle of the body 1, presses the impact-resistant composite plate 5 into the insertion slot 4. When the impact-resistant composite plate 5 is impacted by the medium, the buffer rubber block 11 plays an appropriate buffering role, avoiding the sudden increase in impact force and accelerating the damage to the surface of the impact-resistant composite plate 5. The impact-resistant composite plate 5 is composed of three layers, including a steel base plate 501, a honeycomb metal buffer layer 502, and a tungsten carbide alloy surface layer 503. The tungsten carbide alloy surface layer 503 has good impact resistance stiffness, and the honeycomb metal buffer layer 502 has good buffering effect. The combined design increases the impact resistance of the impact-resistant composite plate 5.

[0025] Example 2: Based on Example 1, the impact-resistant composite plate 5 has a second threaded hole 12 at one end; a bidirectional fixing screw 8 is threaded to one end of the second threaded hole 12, and a spring 13 is fixedly connected to the inner wall of the second threaded hole 12, with the other end of the spring 13 pressed against the bidirectional fixing screw 8.

[0026] When using the impact-resistant composite plate 5, which has been in use for a long time, it needs maintenance and replacement. Simply turn the nut 14 in the operating groove 6 to fully screw the bidirectional fixing screw 8 into one side and disengage it from the second threaded hole 12 on the other side of the impact-resistant composite plate 5, and it can be removed. Then, turn the nut 14 in the opposite direction to fully disengage the other side of the bidirectional fixing screw 8 from the second threaded hole 12 of the other impact-resistant composite plate 5, and it can be removed. During installation, the impact-resistant composite plates 5 can be installed one by one in the same way. The spring 13 in the upper second threaded hole 12 of the impact-resistant composite plate 5 is used to compress and fix the bidirectional fixing screw 8, so as to prevent the working vibration from causing the threads of the bidirectional fixing screw 8 to loosen and the impact-resistant composite plate 5 to loosen.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant flat plate valve, comprising a valve plate body (1), wherein one end of the valve plate body (1) is provided with a groove (2) and one end of the valve plate body (1) is provided with a through hole (3), characterized in that: The valve plate body (1) has slots (4) symmetrically arranged at both ends. An impact-resistant composite plate (5) is inserted into the slot (4). The valve plate body (1) has an operating groove (6) at one end. The operating groove (6) has first threaded holes (7) symmetrically arranged at both ends. The first threaded holes (7) are threadedly connected to bidirectional fixing screws (8).

2. The impact-resistant flat valve according to claim 1, characterized in that: The inner wall of the slot (4) is provided with a sealing groove (9), and a sealing strip (10) is inserted into the sealing groove (9).

3. The impact-resistant flat plate valve according to claim 1, characterized in that: The valve plate body (1) has buffer rubber blocks (11) symmetrically inserted at both ends, and the bidirectional fixing screw (8) has a swivel cap (14) in the middle.

4. The impact-resistant flat valve according to claim 1, characterized in that: The impact-resistant composite plate (5) includes a steel substrate (501), a honeycomb metal buffer layer (502), and a tungsten carbide alloy surface layer (503); one end of the steel substrate (501) is fixedly connected to the honeycomb metal buffer layer (502), one end of the honeycomb metal buffer layer (502) is fixedly connected to the tungsten carbide alloy surface layer (503), and the other end of the steel substrate (501) is pressed against the buffer rubber block (11).

5. The impact-resistant flat plate valve according to claim 1, characterized in that: The impact-resistant composite plate (5) has a second threaded hole (12) at one end.

6. The impact-resistant flat plate valve according to claim 5, characterized in that: One end of the second threaded hole (12) is threadedly connected to a bidirectional fixing screw (8), and a spring (13) is fixedly connected to the inner wall of the second threaded hole (12). The other end of the spring (13) is pressed against the bidirectional fixing screw (8).

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