Hard sealing gate valve

Abstract

The utility model relates to the technical field of gate valves, in particular to a hard sealing gate valve which comprises a valve body, a valve handle seat arranged on the valve body and a valve handle arranged on the valve body, an anti-rust assembly is arranged on the valve handle seat, and the anti-rust assembly comprises an oil storage cylinder fixedly installed on the upper surface of the valve handle seat. A limiting disc is fixedly installed on a top barrel body of the oil storage barrel, a dustproof cover is hinged to the side face of the limiting disc through a hinge, a threaded pipe is fixedly installed on a bottom barrel body of the oil storage barrel, a threaded cover is connected to the threaded pipe in a threaded mode, and a transparent window is arranged on the barrel body of the oil storage barrel. An arc-shaped plate is fixedly installed on a cylinder body of the oil storage cylinder, a left guide rod and a right guide rod are fixedly installed between the arc-shaped plate and the bottom face of the limiting disc, and a light-proof shielding plate is slidably connected to the two guide rods. The valve handle can be prevented from rusting, normal operation is facilitated, and use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gate valve, concretely relates to a hard sealing gate valve. BACKGROUND

[0002] In the fluid control system, the valve as the key control element, is widely used in petroleum, chemical industry, metallurgy, electric power, water treatment and many other industrial fields, wherein, the gate valve as a commonly used cut-off valve, its main function is all open or all close medium flow channel, to realize the accurate control to fluid flow, according to the different sealing forms, the gate valve can be divided into two categories of soft sealing gate valve and hard sealing gate valve, and the sealing material of the soft sealing gate valve is usually rubber or polytetrafluoroethylene and other non-metallic materials, and the sealing material of the hard sealing gate valve is stainless steel and other metal materials.

[0003] The hard sealing gate valve, because it has excellent high temperature resistance, high pressure resistance, wear resistance and corrosion resistance, has the advantages of not being easy to damage under high pressure, high temperature and harsh working conditions, and there are many types of hard sealing gate valves on the market, since the hard sealing gate valve is generally controlled by rotating the valve handle to close the valve core, the valve handle and the corresponding valve handle seat are threadedly connected, and the valve handle part of most hard sealing gate valves is directly exposed to the outside, lacking corresponding oil seal and lubrication components, which can cause the threaded part of the valve handle to be exposed to the outside for a long time and rust, and after rusting, the valve handle is more difficult to rotate, affecting the normal opening and closing operation of the gate valve. In view of this, we propose a hard sealing gate valve. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of hard sealing gate valve to solve the defects proposed in the above background art.

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

[0006] A kind of hard sealing gate valve, including valve body, valve handle seat being arranged on valve body and valve handle being arranged on valve body, the valve handle is threadedly connected between the valve handle seat, the valve handle seat is provided with rustproof assembly, the rustproof assembly includes oil storage cylinder being fixedly installed on the upper surface of the valve handle seat, limiting disc is fixedly installed on the top barrel of the oil storage cylinder, dust cover is hingedly connected on the side of the limiting disc by hinge, the dust cover is sleeved on the top barrel of the oil storage cylinder, the dust cover is abutted on the limiting disc, threaded pipe is fixedly installed on the bottom barrel of the oil storage cylinder, threaded cap is threadedly connected on the threaded pipe, transparent window is arranged on the barrel of the oil storage cylinder.

[0007] Preferably, the handle of the valve handle end is located above the oil storage cylinder, and the dust cover is sleeved on the top of the valve handle.

[0008] Preferably, the threaded pipe is fixedly installed with a fixed disc on the smooth section of the end of the oil liquid storage cylinder, and the threaded cover abuts against the fixed disc.

[0009] Preferably, the inner diameter of the threaded pipe is 2-3.5 cm, and an anti-skid layer is arranged on the surface of the threaded cover.

[0010] Preferably, the transparent window is a transparent plate structure, and a liquid level warning line is arranged on the transparent window.

[0011] Preferably, a handle is fixedly installed on the side surface of the dustproof cover, and the handle has an arc-shaped cross section.

[0012] Preferably, an arc-shaped plate is fixedly installed on the cylinder body of the oil liquid storage cylinder, the arc-shaped plate is located below the transparent window, two left-right symmetrical guide rods are fixedly installed between the arc-shaped plate and the bottom surface of the limiting disc, and a light-proof shielding plate is slidably connected to the two guide rods.

[0013] Preferably, the size of the light-proof shielding plate is greater than that of the transparent window, and the light-proof shielding plate shields the front side of the transparent window.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. The rustproof assembly is arranged to ensure that the valve handle part is sleeved in the oil liquid storage cylinder during use, and the oil liquid storage cylinder is sealed and lubricated by adding lubricating oil liquid into the oil liquid storage cylinder, so that rusting of the valve handle part is avoided, and the dustproof cover can be closed to achieve the dustproof effect, and the handle at the valve handle end is exposed outside without affecting normal rotation after the dustproof cover is opened, so that the rustproof protection effect of the valve handle part is achieved.

[0016] 2. The transparent window and the liquid level warning line are arranged to facilitate the addition of appropriate lubricating oil liquid, the light-proof shielding plate is arranged to achieve the light protection effect of the transparent window part, and the threaded pipe and the threaded cover are arranged to facilitate the discharge operation of the internal lubricating liquid. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the present utility model;

[0018] Figure 2 It is an explosion structure schematic view of the present utility model;

[0019] Figure 3 It is an explosion structure schematic view of the rustproof assembly of the present utility model;

[0020] Figure 4 It is the second explosion structure schematic view of the anti-rust assembly of the utility model;

[0021] Figure 5 It is the partial structure schematic view of the anti-rust assembly of the utility model;

[0022] The meaning of each reference numeral in the drawing is as follows:

[0023] 1, valve body; 10, valve handle seat; 11, valve handle;

[0024] 2, anti-rust assembly; 20, oil storage cylinder; 201, limiting disc; 21, fixed disc; 22, threaded pipe; 23, transparent window; 231, liquid level warning line; 24, arc plate; 25, guide rod; 26, light-tight baffle; 27, threaded cap; 271, anti-slip layer; 28, dust cover; 281, handle. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Please refer to Figures 1-5 The utility model provides a kind of technical solutions: a hard sealing gate valve, including valve body 1, valve handle seat 10 being arranged on valve body 1 and valve handle 11 being arranged on valve body 1, valve handle 11 is connected between threaded connection with valve handle seat 10, valve handle seat 10 is provided with anti-rust assembly 2, anti-rust assembly 2 includes fixed installation on the upper surface of valve handle seat 10 oil storage cylinder 20, limiting disc 201 is fixedly installed on the top cylinder of oil storage cylinder 20, dust cover 28 is hinged on the side of limiting disc 201 by hinge, dust cover 28 is sleeved on the top cylinder of oil storage cylinder 20, dust cover 28 is rested on limiting disc 201, realizes dust protection operation, in addition, add oil in oil storage cylinder 20, can play the effect of lubricating the part of valve handle 11, avoid the rusting of the part of valve handle 11 exposed to the outside;

[0027] Specifically, threaded pipe 22 is fixedly installed on the bottom cylinder of oil storage cylinder 20, threaded cap 27 is connected on threaded pipe 22, so as to discharge the oil in oil storage cylinder 20 along threaded pipe 22 and carry out draining operation.

[0028] In the embodiment, the oil storage cylinder 20 is provided with a transparent window 23 on the cylinder body, the transparent window 23 is a transparent plate structure, and the transparent window 23 is provided with a liquid level warning line 231, so as to facilitate observation of the oil amount in the oil storage cylinder 20.

[0029] Specifically, the handle at the end of the valve handle 11 is located above the oil storage cylinder 20, and the dust cover 28 is sleeved on the top of the valve handle 11, so that after the dust cover 28 is opened, the rotation operation of the valve handle 11 can be normally performed.

[0030] Further, the fixed disc 21 is fixedly installed on the smooth section pipe body of the end portion of the oil storage cylinder 20, and the threaded cover 27 is abutted on the fixed disc 21 for limiting operation, so as to facilitate the threaded cover 27 being screwed to abut on the fixed disc 21, and prove that the threaded cover 27 cannot continue to be operated.

[0031] In addition, the inner diameter of the threaded pipe 22 is 2cm to 3.5cm, and the surface of the threaded cover 27 is provided with an anti-skid layer 271, which is beneficial to increase the friction and has the effect of anti-skid protection.

[0032] It is worth noting that the handle 281 is fixedly installed on the side surface of the dust cover 28, and the cross section of the handle 281 is arc-shaped, so that the dust cover 28 is more smoothly opened by holding the handle 281.

[0033] It is worth noting that the oil storage cylinder 20 is fixedly installed with an arc-shaped plate 24 on the cylinder body, the arc-shaped plate 24 is located below the transparent window 23, the arc-shaped plate 24 and the bottom surface of the limiting disc 201 are fixedly installed with two left and right symmetrical guide rods 25, the two guide rods 25 are slidably connected with an opaque shielding plate 26, the size of the opaque shielding plate 26 is greater than that of the transparent window 23, the opaque shielding plate 26 is shielded in front of the transparent window 23, and the transparent window 23 is shielded and protected by the opaque shielding plate 26, so as to avoid the influence of sunlight on the oil in the oil storage cylinder 20.

[0034] In use of the hard sealing gate valve, the threaded cover 27 is tightened, the dust cover 28 is opened, a corresponding amount of lubricating oil or sealing oil is added into the oil storage cylinder 20, the liquid level is located below the liquid level warning line 231, the threaded connection part on the valve handle 11 is immersed by the liquid, the threaded connection part on the valve handle 11 is not easy to rust, and then the dust cover 28 is closed.

[0035] When the valve handle 11 is rotated, the dust cover 28 is opened, the top end of the valve handle 11 is exposed, and then the valve handle 11 is rotated for operation.

[0036] 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. A hard-seal gate valve, comprising a valve body (1), a valve handle seat (10) disposed on the valve body (1), and a valve handle (11) disposed on the valve body (1), characterized in that: The valve handle (11) is threadedly connected to the valve handle seat (10). The valve handle seat (10) is provided with a rust-proof component (2). The rust-proof component (2) includes an oil storage cylinder (20) fixedly installed on the upper surface of the valve handle seat (10). A limiting plate (201) is fixedly installed on the top cylinder of the oil storage cylinder (20). A dust cover (28) is hinged to the side of the limiting plate (201). The dust cover (28) is fitted onto the top cylinder of the oil storage cylinder (20) and abuts against the limiting plate (201). A threaded tube (22) is fixedly installed on the bottom cylinder of the oil storage cylinder (20). A threaded cap (27) is threadedly connected to the threaded tube (22). A transparent window (23) is provided on the cylinder of the oil storage cylinder (20).

2. The hard-seal gate valve according to claim 1, characterized in that: The handle at the end of the valve handle (11) is located above the oil storage cylinder (20), and the dust cover (28) is fitted over the top of the valve handle (11).

3. The hard-seal gate valve according to claim 1, characterized in that: A fixing plate (21) is fixedly installed on the smooth section of the threaded pipe (22) near the oil storage cylinder (20), and the threaded cap (27) abuts against the fixing plate (21).

4. The hard-seal gate valve according to claim 3, characterized in that: The inner diameter of the threaded tube (22) is 2cm to 3.5cm, and the surface of the threaded cap (27) is provided with an anti-slip layer (271).

5. The hard-seal gate valve according to claim 1, characterized in that: The transparent window (23) is a transparent plate structure, and a liquid level warning line (231) is provided on the transparent window (23).

6. The hard-seal gate valve according to claim 1, characterized in that: A handle (281) is fixedly installed on the side of the dust cover (28), and the cross-section of the handle (281) is arc-shaped.

7. The hard-seal gate valve according to claim 5, characterized in that: An arc-shaped plate (24) is fixedly installed on the cylinder of the oil storage cylinder (20). The arc-shaped plate (24) is located below the transparent window (23). Two symmetrical guide rods (25) are fixedly installed between the arc-shaped plate (24) and the bottom surface of the limiting plate (201). An opaque shielding plate (26) is slidably connected to the two guide rods (25).

8. The hard-seal gate valve according to claim 7, characterized in that: The size of the opaque shield (26) is larger than the size of the transparent window (23), and the opaque shield (26) blocks the front side of the transparent window (23).

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