Wear-resistant gate valve

Abstract

The utility model provides a wear-resistant gate valve, and belongs to the technical field of valve manufacturing. The problem that an existing gate valve is prone to abrasion is solved. The wear-resistant gate valve comprises a valve body and a valve cover, the valve cover is in threaded connection with the valve body, a locking cap is fixedly connected into the valve cover, a lead screw is movably connected to the top of the valve cover in a penetrating mode, the bottom end of the lead screw penetrates through the locking cap and extends to an inner cavity of the valve body, and the bottom of the surface of the lead screw is sleeved with a gate plate in a threaded mode; the bottom of an inner cavity of the groove is fixedly connected with an oil injection pipe in a penetrating mode, an oil injection channel is formed in the lead screw, the inner cavity of the groove is in threaded connection with a sealing bolt, the surface of the valve deck is sleeved with a hexagonal cap in a threaded mode, the top of the surface of the lead screw is fixedly sleeved with a hand wheel, a cavity is formed in the hand wheel, and positioning bases are riveted to the two sides of the top of the hexagonal cap. Positioning rods are movably connected to the two sides of the bottom of the hand wheel in a penetrating mode, and the top ends of the positioning rods penetrate into an inner cavity of the cavity and are riveted with iron plates. The utility model has the advantages of long service life, safety in use and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve manufacturing technical field relates to a gate valve especially relates to a kind of wear-resistant gate valve. BACKGROUND

[0002] Gate valve is a start-closing part, for controlling the opening and closing of pipeline.For example, Chinese patent literature discloses a kind of gate valve with anti-rust filtering function [application number: 202221679201.5;Grant announcement number: CN217815070U], it includes valve body, valve cover, gate, screw rod, hand wheel and filter assembly;Valve body is provided with fluid passage in, valve body is also provided with import end and export end being communicated with flow passage, import end and export end are all provided with connecting flange, filter assembly is installed in import end to realize filtering;Fluid passage in valve body, gate and filter assembly are all sprayed with anti-rust paint.

[0003] The above-mentioned gate valve with anti-rust filtering function can increase the anti-rust function, but it does not have an oiling structure, and the user cannot apply lubricating oil to the surface of the screw rod. During the relative motion of the screw rod and the valve plate, there is a lack of effective lubricating medium, the friction increases, the wear between the screw rod and the valve plate is intensified, the service life of the gate plate is affected, and the gate plate does not have a locking function, so the screw rod cannot be locked. This allows unrelated personnel to open and close the valve at will, affecting the normal operation of the equipment. SUMMARY

[0004] The utility model aims at the above-mentioned problems existing in prior art, provides a kind of wear-resistant gate valve that can reduce the wear between screw rod and gate, and can lock screw rod, so that unrelated personnel cannot open and close valve at will.

[0005] The utility model discloses a kind of wear-resistant gate valve, including valve body and valve cover, the surface of the valve cover is connected with valve body thread, the inside of the valve cover is fixedly connected with locking cap, the top of the valve cover is connected with screw rod with penetration activity, the bottom end of the screw rod is extended to the inner chamber of valve body with penetration locking cap, the bottom of the surface of the screw rod is equipped with gate with thread, the top of the screw rod is equipped with recess with penetration fixed connection, the inner chamber of the recess is equipped with oiling pipe with penetration fixed connection, the inside of the screw rod is equipped with oiling channel, the inner chamber of the recess is equipped with sealing bolt with thread connection, the surface of the valve cover is equipped with hexagon cap with thread, the top of the surface of the screw rod is fixedly equipped with hand wheel, the inside of the hand wheel is equipped with cavity, the top of the hexagon cap is riveted with positioning seat on both sides, the bottom of the hand wheel is connected with positioning rod with penetration activity on both sides, the top of the positioning rod is penetrated to the inner chamber of cavity and riveted with iron plate.

[0006] The oil injection pipe, the oil injection channel, the sealing bolt, the cavity, the positioning seat, the positioning rod and the iron plate are arranged on the top of the hexagonal cap and the inside of the screw rod, so that the user can conveniently inject oil on the surface of the screw rod, reduce the friction between the screw rod and the gate plate, prevent the gate plate from being easily worn, prolong the service life of the gate valve, lock the screw rod and the hand wheel, prevent the gate valve from being randomly opened and closed by irrelevant personnel, and ensure the normal operation of the equipment.

[0007] In the above-mentioned wear-resistant gate valve, the bottom end of the oil injection pipe is communicated with the oil injection channel, the bottom of the oil injection channel is provided with a first inclined angle on both sides, and the top of the gate plate is provided with a second inclined angle.

[0008] In the above-mentioned wear-resistant gate valve, the top of the positioning seat is provided with a positioning groove, and the bottom end of the positioning rod extends into the inner cavity of the positioning groove.

[0009] In the above-mentioned wear-resistant gate valve, the inside of the valve cover is sequentially provided with a copper ring and packing from top to bottom, the bottom end of the screw rod sequentially penetrates the copper ring and the packing, and the top of the inner cavity of the hexagonal cap is in contact with the copper ring.

[0010] In the above-mentioned wear-resistant gate valve, the top of the surface of the screw rod is provided with a nut, the top of the surface of the screw rod is movably provided with a signboard, the bottom of the nut is in contact with the signboard, and the bottom of the signboard is in contact with the hand wheel.

[0011] In the above-mentioned wear-resistant gate valve, the surface of the screw rod is fixedly provided with a limiting plate, and the limiting plate is located in the inside of the locking cap.

[0012] Compared with the prior art, the wear-resistant gate valve has the advantages that the user can conveniently inject oil on the connecting part of the screw rod and the gate plate, the screw rod is more smooth when rotating, wear is less likely to occur, the service life of the gate valve is prolonged, the locking function is provided, the valve cannot be randomly opened and closed without special tools, the normal operation of the equipment can be ensured, and the safety in use is good. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1is a sectional view of the wear-resistant gate valve.

[0014] Figure 2 is a sectional view of the gate plate structure of the wear-resistant gate valve.

[0015] Figure 3 is a left side view of the wear-resistant gate valve.

[0016] Figure 4 is a sectional view of the screw rod structure of the wear-resistant gate valve.

[0017] Figure 5 is a sectional view of the screw rod structure of the wear-resistant gate valve.

[0018] Figure 6 is a sectional view of the wear-resistant gate valve Figure 5 at A.

[0019] In the figure, 1, valve body; 2, valve cover; 3, locking cap; 4, screw rod; 5, gate plate; 6, groove; 7, oil injection pipe; 8, oil injection channel; 9, sealing bolt; 10, hexagonal cap; 11, hand wheel; 12, cavity; 13, positioning seat; 14, positioning rod; 15, iron plate; 16, second bevel; 17, copper ring; 18, packing; 19, nut; 20, signboard. DETAILED DESCRIPTION

[0020] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0021] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 indicated, the wear-resistant gate valve comprises a valve body 1 and a valve cover 2, the surface of the valve cover 2 is threadedly connected with the valve body 1, the valve cover 2 is fixedly connected with a locking cap 3 inside, the valve cover 2 is movably connected with a screw rod 4 penetrating through the top, the bottom end of the screw rod 4 penetrates through the locking cap 3 and extends to the inner cavity of the valve body 1, a gate plate 5 is threadedly sleeved on the bottom surface of the screw rod 4, a groove 6 is formed on the top of the screw rod 4, an oil injection pipe 7 is fixedly connected penetrating through the bottom of the inner cavity of the groove 6, an oil injection channel 8 is formed in the inner cavity of the screw rod 4, a sealing bolt 9 is threadedly connected in the inner cavity of the groove 6, a hexagonal cap 10 is threadedly sleeved on the surface of the valve cover 2, a hand wheel 11 is fixedly sleeved on the top surface of the screw rod 4, a cavity 12 is formed in the inner cavity of the hand wheel 11, positioning seats 13 are riveted on the two sides of the top of the hexagonal cap 10, positioning rods 14 are movably connected penetrating through the two sides of the bottom of the hand wheel 11, iron plates 15 are riveted on the top end of the positioning rods 14 penetrating through the inner cavity of the cavity 12.

[0022] Further, the bottom end of the oil injection pipe 7 is connected with the oil injection channel 8, the bottom of both sides of the oil injection channel 8 is provided with a first inclined angle, and the top of the gate plate 5 is provided with a second inclined angle 16. The top of the positioning seat 13 is provided with a positioning groove, and the bottom end of the positioning rod 14 extends to the inner cavity of the positioning groove.

[0023] The inside of the valve cover 2 is sequentially provided with a copper ring 17 and a packing 18 from top to bottom, the bottom end of the screw rod 4 sequentially penetrates the copper ring 17 and the packing 18, and the top of the inner cavity of the hexagonal cap 10 is in contact with the copper ring 17. The top surface of the screw rod 4 is threadedly sleeved with a nut 19, the top surface of the screw rod 4 is movably sleeved with a signboard 20, the bottom of the nut 19 is in contact with the signboard 20, and the bottom of the signboard 20 is in contact with the hand wheel 11. The surface of the screw rod 4 is fixedly sleeved with a limiting plate, and the limiting plate is located in the inside of the locking cap 3.

[0024] In use, under the action of the positioning seat 13 and the positioning rod 14, the hand wheel 11 cannot be randomly rotated, the hand wheel 11 and the screw rod 4 can be locked, and the valve is prevented from being randomly opened and closed by irrelevant personnel. When the hand wheel 11 needs to be rotated, a strong magnet is taken and is attracted to the top of the hand wheel 11, at this time, the iron plate 15 starts to move upward under the magnetic force of the strong magnet, the iron plate 15 drives the positioning rod 14 to move upward, thereby releasing the limiting of the screw rod 4, then the user can rotate the hand wheel 11 to open and close the gate plate 5. When the surface of the screw rod 4 needs to be oiled, the sealing bolt 9 is rotated by the inner hexagonal wrench, then the sealing bolt 9 is removed, the needle tube inside of the syringe is drawn full of lubricating oil, then the needle part of the syringe is connected with the oil injection pipe 7, the plunger of the syringe is slowly pushed, the lubricating oil is slowly conveyed to the oil injection channel 8 through the oil injection pipe 7, finally, the lubricating oil slowly flows to the threaded surface of the screw rod 4 under the action of the oil injection channel 8 and the first inclined angle, the excess oil drops on the top of the gate plate 5 and flows to the inside of the gate plate 5 under the action of the second inclined angle 16, thereby completing the lubricating treatment.

[0025] The contents not described in detail in the specification belong to the prior art known by the person skilled in the art. The specific embodiments described in the specification are only illustrative of the spirit of the utility model. The person skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the scope defined by the appended claims.

Claims

1. A wear-resistant gate valve comprising a valve body (1) and a valve cover (2), characterized in that: The surface of the valve cover (2) is threadedly connected with the valve body (1), the inside of the valve cover (2) is fixedly connected with a locking cap (3), the top of the valve cover (2) is movably connected with a lead screw (4) penetrating therethrough, the bottom end of the lead screw (4) extends to the inner cavity of the valve body (1) penetrating through the locking cap (3), the surface of the lead screw (4) is threadedly sleeved with a gate (5) at the bottom, the top of the lead screw (4) is provided with a groove (6), the inner cavity of the groove (6) is movably connected with an oil injection pipe (7) at the bottom, the inside of the lead screw (4) is provided with an oil injection channel (8), the inner cavity of the groove (6) is threadedly connected with a sealing bolt (9), the surface of the valve cover (2) is threadedly sleeved with a hexagonal cap (10), the surface of the lead screw (4) is fixedly sleeved with a hand wheel (11) at the top, the inside of the hand wheel (11) is provided with a cavity (12), the top of the hexagonal cap (10) is riveted with a positioning seat (13) on both sides, the bottom of the hand wheel (11) is movably connected with a positioning rod (14) on both sides, the top end of the positioning rod (14) extends to the inner cavity of the cavity (12) and is riveted with an iron plate (15).

2. A wear resistant gate valve according to claim 1, characterized in that The bottom end of the oil injection pipe (7) is connected with the oil injection channel (8), the bottom of the oil injection channel (8) is provided with a first bevel on both sides, the top of the gate (5) is provided with a second bevel (16).

3. A wear resistant gate valve according to claim 1, wherein The top of the positioning seat (13) is provided with a positioning groove, and the bottom end of the positioning rod (14) extends to the inner cavity of the positioning groove.

4. A wear resistant gate valve according to claim 1, wherein The inside of the valve cover (2) is sequentially provided with a copper ring (17) and a packing (18) from top to bottom, the bottom end of the lead screw (4) sequentially penetrates the copper ring (17) and the packing (18), and the top of the inner cavity of the hexagonal cap (10) is in contact with the copper ring (17).

5. A wear resistant gate valve according to claim 1, wherein The top of the surface of the lead screw (4) is threadedly sleeved with a nut (19), the top of the surface of the lead screw (4) is movably sleeved with a signboard (20), the bottom of the nut (19) is in contact with the signboard (20), and the bottom of the signboard (20) is in contact with the hand wheel (11).

6. A wear resistant gate valve according to claim 1, wherein The surface of the lead screw (4) is fixedly sleeved with a limiting plate, and the limiting plate is located in the inside of the locking cap (3).

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