Valve plate connecting piece of high-strength flat valve

Abstract

The utility model relates to the technical field of flat valves, in particular to a valve plate connecting piece of a high-strength flat valve, which comprises a valve plate, a connecting groove is arranged at the top of the valve plate, a fixing groove is arranged at the bottom of the connecting groove, and fixing holes are arranged on two side walls of the fixing groove. Sliding holes are formed in the inner walls of the sliding blocks, and fixing heads are fixed to the end faces, away from the sliding holes, of the sliding blocks and matched with the fixing holes in an inserted mode; a fixing seat is arranged at the bottom of the main shaft, the fixing seat is inserted into a fixing groove, and fixing heads on the two sides are inserted into fixing holes under the action of springs on the two sides, so that the fixing seat can be stably connected with the valve plate, and the connection stability between the valve rod assembly and the valve plate is guaranteed; the sliding block is pushed to separate the fixing head from the fixing hole; according to the design, the traditional mode that the valve rod and the valve plate are connected through a transverse pin is changed, and the design has the advantages that operation is easy, and the valve plate and the valve rod are not prone to damage.

Description

TECHNICAL FIELD

[0001] The utility model relates to flat valve technical field, specifically is the valve plate connecting piece of high strength flat valve. BACKGROUND

[0002] Flat valve is a kind of common valve, mainly by valve body, valve cover, valve stem, valve seat, sealing ring and valve plate (gate) etc. Component is formed, and valve plate is used to control the flow of fluid, and valve stem is the component of connecting valve cover and flat plate (gate), and the common valve stem material includes stainless steel, carbon steel, alloy steel etc., such material not only has the advantage of high structural strength, but also has better corrosion resistance, guarantees the service life of valve stem;Since the opening and closing of flat plate are controlled by the up and down movement of valve stem, therefore, the stable operation of valve stem is crucial to ensure the overall performance and reliability of flat valve.

[0003] The connecting mode between valve stem and valve plate usually adopts pin shaft type connection, and cross pin is the key component of connecting valve stem and valve plate, that is, the pin shaft on valve stem is matched with pin shaft hole or pin shaft slot on valve plate, and the connection and cut-off are completed by the insertion and pulling out of pin shaft, and cross pin bears the thrust and torque transmitted by valve stem, to ensure that valve plate can be smoothly opened or closed;However, in actual operation, since the cooperation between cross pin and pin hole is usually relatively close, the cross pin connection mode needs to be helped by tools to knock out or insert cross pin from pin hole, and in this process, valve plate or valve stem is easily injured, in view of this, the valve plate connecting piece of high strength flat valve is proposed. CONTENT OF UTILITY MODEL

[0004] The utility model is aimed at providing the valve plate connecting piece of high strength flat valve to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] The valve plate connecting piece of high strength flat valve, including valve plate, the top of valve plate is provided with connecting slot, the bottom of connecting slot is provided with fixed slot, and the two side walls of fixed slot are both provided with fixed hole;

[0007] The upper portion of valve plate is equipped with valve stem assembly, and the valve stem assembly includes main shaft, and the top end of main shaft is coaxially fixed with threaded column;The outer wall of main shaft is slidably installed with grommet gland, and a plurality of connecting bolts are penetrated in grommet gland;

[0008] The bottom end of main shaft is fixed with fixed seat in fixed slot, and the two ends of fixed seat are both provided with sliding cavity, and sliding cavity is slidably installed with sliding block, and the inner wall of sliding block is provided with sliding hole, and the end face of sliding block away from sliding hole is fixed with fixed head, and fixed head is inserted and matched with fixed hole;The inner wall of sliding cavity is both fixed with guide rod, and guide rod is slidably connected with sliding hole, and spring for abutting against sliding block is arranged on the outer portion of guide rod.

[0009] As the preferred technical scheme of the utility model, two strip grooves are formed in the front end surface of the fixed seat, a protrusion is fixed to the front end surface of the sliding block, the protrusion is in sliding connection with the strip grooves, and a through hole is formed in the front end of the protrusion.

[0010] As the preferred technical scheme of the utility model, the sliding block and the fixed head are in integral molding structure, and the overall shape of the fixed head is in cylindrical shape.

[0011] As the preferred technical scheme of the utility model, the main shaft and the threaded column are in integral molding structure, and the threaded groove of the outer wall of the threaded column is in milling processing molding.

[0012] As the preferred technical scheme of the utility model, the cross section shape of the fixed seat is in rectangular shape, and the size of the fixed seat is matched with the size of the fixed groove.

[0013] As the preferred technical scheme of the utility model, the bottom end of the main shaft is coaxially tightly welded with the center of the top end of the fixed seat, and the diameter of the main shaft is less than the width of the fixed seat.

[0014] As the preferred technical scheme of the utility model, two symmetrical bearings are installed on the threaded column, and a nut is threadedly connected to the threaded column close to the top end.

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] The valve rod assembly is provided with the fixed seat at the bottom of the main shaft, the fixed seat is inserted into the fixed groove, the fixed heads on both sides are inserted into the fixed holes under the action of the springs on both sides, so that the fixed seat can be stably connected with the valve plate, the connection stability between the valve rod assembly and the valve plate is ensured, and when the valve plate is disassembled, the fixed heads can be separated from the fixed holes by pushing the sliding block; the design changes the traditional mode of connecting the valve rod and the valve plate through the cross pin, and has the advantages of easy operation and difficulty in damaging the valve plate and the valve rod. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic view of the utility model;

[0018] Figure 2 It is the structure schematic view of the valve plate in the utility model;

[0019] Figure 3 It is the structure schematic view of the valve rod assembly in the utility model;

[0020] Figure 4 It is the partial explosion structure schematic view of the valve rod assembly in the utility model;

[0021] In the drawing:

[0022] 1, valve plate; 10, connecting groove; 11, fixed groove; 12, fixed hole;

[0023] 2, valve stem assembly; 20, main shaft; 21, fixed seat; 210, sliding cavity; 211, strip groove; 22, guide rod; 23, spring; 24, sliding block; 240, sliding hole; 241, protrusion; 25, fixed head; 26, threaded column; 27, washer cover; 270, connecting bolt; 28, bearing; 29, nut. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] The present embodiment provides a technical solution:

[0026] Please refer to Figures 1-4 As shown in the figure, the valve plate connecting piece of the high-strength flat plate valve comprises a valve plate 1, a connecting groove 10 is formed at the top of the valve plate 1, a fixed groove 11 is formed at the bottom of the connecting groove 10, and fixed holes 12 are formed on the two side walls of the fixed groove 11; a valve stem assembly 2 is arranged above the valve plate 1, the valve stem assembly 2 comprises a main shaft 20, and a threaded column 26 is coaxially fixed at the top end of the main shaft 20; a washer cover 27 is slidingly installed on the outer wall of the main shaft 20, and a plurality of connecting bolts 270 are arranged through the washer cover 27; a fixed seat 21 is fixed at the bottom end of the main shaft 20 and located in the fixed groove 11, sliding cavities 210 are formed at the two ends of the fixed seat 21, a sliding block 24 is slidingly installed at the sliding cavities 210, a sliding hole 240 is formed in the inner wall of the sliding block 24, a fixed head 25 is fixed at the end of the sliding block 24 away from the sliding hole 240, and the fixed head 25 is inserted and matched with the fixed hole 12; guide rods 22 are fixed at the inner walls of the sliding cavities 210, the guide rods 22 are slidingly connected with the sliding hole 240, and springs 23 are arranged outside the guide rods 22 and used for abutting against the sliding block 24.

[0027] In the present embodiment, two strip grooves 211 are formed at the front end face of the fixed seat 21, a protrusion 241 is fixed at the front end face of the sliding block 24, the protrusion 241 is slidingly connected with the strip groove 211, and a through hole is formed at the front end of the protrusion 241. The through hole facilitates horizontal movement of the sliding block 24, thereby facilitating adjustment of the position of the fixed head 25.

[0028] In the embodiment, the slider 24 and the fixed head 25 are integrally formed, and the overall shape of the fixed head 25 is cylindrical. The integrally formed slider 24 and fixed head 25 have better connection strength, ensuring the connection stability of the slider 24 and the fixed head 25, and further ensuring the limiting effect of the fixed head 25 on the fixed seat 21.

[0029] In the embodiment, the spindle 20 and the threaded column 26 are integrally formed, and the threaded groove on the outer wall of the threaded column 26 is formed by milling. The integrally formed spindle 20 and threaded column 26 have better connection strength, making the spindle 20 and the threaded column 26 have better service life.

[0030] In the embodiment, the cross-sectional shape of the fixed seat 21 is rectangular, and the size of the fixed seat 21 is matched with the size of the fixed groove 11. This design facilitates the stable installation of the fixed seat 21 in the fixed groove 11, ensuring the installation stability of the valve stem assembly 2.

[0031] In the embodiment, the bottom end of the spindle 20 is coaxially tightly welded with the center of the top end of the fixed seat 21, and the diameter of the spindle 20 is smaller than the width of the fixed seat 21. The tight welding ensures the connection firmness between the spindle 20 and the fixed seat 21, and the diameter of the spindle 20 is smaller than the width of the fixed seat 21, which makes the valve plate 1 not be hindered when it is lifted in the valve body.

[0032] In the embodiment, two symmetrical bearings 28 are installed on the threaded column 26, and a nut 29 is threadedly connected to the threaded column 26 near the top end. The arrangement of the bearings facilitates the stable and smooth rotation of the threaded column 26 while being stably connected with the valve seat, and the arrangement of the nut 29 facilitates the connection and fixation of the threaded column 26 with the hand wheel.

[0033] It should be noted that the spindle 20 and the threaded column 26 in the embodiment are made of stainless steel material. Stainless steel material has good corrosion resistance and better structural strength, and is suitable for various corrosive media and high temperature environments, which ensures the service life of the spindle 20 and the threaded column 26.

[0034] When the valve stem assembly 2 needs to be removed, the user first pushes the convex head 241 inward from both sides, the convex head 241 drives the slider 24 to move horizontally, the guide rod 22 slides along the sliding hole 240, and the spring 23 is compressed by the slider 24. At this time, the slider 24 drives the fixed head 25 to move inward, and the fixed head 25 is separated from the fixed hole 12. At this time, the limitation of the fixed head 25 on the fixed seat 21 is removed, and then the user pushes the fixed seat 21 forward, and the fixed seat 21 is separated from the fixed groove 11. The fixed seat 21 simultaneously drives the spindle 20 to separate from the valve plate 1, and the valve stem assembly 2 is removed.

[0035] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. Valve plate connection for a high-strength flat valve, comprising a valve plate (1), characterized in that: The top of the valve plate (1) is provided with a connecting groove (10), and the bottom of the connecting groove (10) is provided with a fixing groove (11). Both sides of the fixing groove (11) are provided with fixing holes (12). The upper portion of the valve plate (1) is provided with a valve rod assembly (2), and the valve rod assembly (2) comprises a main shaft (20). The top end of the main shaft (20) is coaxially fixed with a threaded column (26). A gasket gland (27) is slidingly installed on the outer wall of the main shaft (20). A plurality of connecting bolts (270) are penetratingly arranged on the gasket gland (27). The bottom end of the main shaft (20) is fixed with a fixing seat (21) located in the fixing groove (11). Both ends of the fixing seat (21) are provided with sliding cavities (210). A sliding block (24) is slidingly installed in the sliding cavity (210). A sliding hole (240) is formed in the inner wall of the sliding block (24). A fixing head (25) is fixed on the end face of the sliding block (24) away from the sliding hole (240). The fixing head (25) is inserted and matched with the fixing hole (12). The inner wall of the sliding cavity (210) is fixed with a guide rod (22). The guide rod (22) is slidingly connected with the sliding hole (240). The guide rod (22) is externally provided with a spring (23) for abutting against the sliding block (24).

2. The valve plate connector for high-strength flat valve according to claim 1, characterized in that: The front end face of the fixing seat (21) is provided with two strip-shaped grooves (211). The front end face of the sliding block (24) is fixed with a convex head (241). The convex head (241) is slidingly connected with the strip-shaped groove (211). The front end of the convex head (241) is provided with a through hole.

3. The high strength flat valve plate connector of claim 1, wherein: The sliding block (24) and the fixing head (25) are an integral molding structure. The overall shape of the fixing head (25) is cylindrical.

4. The high strength flat valve plate connector of claim 1, wherein: The main shaft (20) and the threaded column (26) are an integral molding structure. The thread groove of the outer wall of the threaded column (26) is formed by milling.

5. The high strength flat valve plate connector of claim 1, wherein: The cross-sectional shape of the fixing seat (21) is rectangular. The size of the fixing seat (21) is matched with the size of the fixing groove (11).

6. The high strength flat valve plate connector of claim 1, wherein: The bottom end of the main shaft (20) is coaxially and tightly welded with the top end center of the fixing seat (21). The diameter of the main shaft (20) is smaller than the width of the fixing seat (21).

7. The high strength flat valve plate connector of claim 1, wherein: Two symmetrical bearings (28) are installed on the threaded column (26). A nut (29) is threadedly connected to the threaded column (26) near the top end.

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