Cast iron valve with good sealing effect

Abstract

The utility model discloses a cast iron valve with a good sealing effect, which belongs to the technical field of cast iron valves, and comprises a box body, a valve main body is arranged in the box body, a valve hand wheel is arranged in the box body, a cover plate is hinged on the box body, a limiting hole is formed in the cover plate, a connecting rod is connected on the box body in a sliding manner, and the connecting rod is connected with a connecting rod. One end of the connecting rod is fixedly connected with a pressing column, the end, away from the pressing column, of the connecting rod is fixedly connected with a limiting block, the connecting rod is sleeved with a tension spring, and the two ends of the tension spring are fixedly connected to the limiting block and the box body respectively. According to the cast iron valve with the good sealing effect, a pressing column, a connecting rod, a tension spring, a limiting block, a cover plate and a limiting hole are arranged, the cover plate is rapidly opened and closed, a valve hand wheel can be conveniently used by a person, the valve hand wheel can be protected when the cover plate is closed, and the situation that the valve hand wheel is opened due to the fact that the person touches the valve hand wheel by mistake is avoided; and property loss is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of cast iron valves, in particular to a cast iron valve with good sealing effect. Background Art

[0002] Valves are control components in fluid conveying systems and have functions such as shutoff, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion or overflow pressure relief. Cast iron valves are one of the more common types.

[0003] Cast iron valves are generally composed of a valve body and a valve handwheel. However, the existing valve handwheel generally only has the function of rotation, but does not have the function of locking after rotation, which makes it easy for people to accidentally touch it and open it when it is idle, thereby causing the liquid in the valve body to flow. If it is not discovered in time, it is very easy to cause property loss. Utility Model Content

[0004] In order to overcome the above defects, the utility model provides a cast iron valve with good sealing effect, which solves the problem that the valve handwheel on the existing cast iron valve does not have the function of locking after rotation, which makes it easy for people to accidentally touch and open it, which easily causes property loss.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cast iron valve with good sealing effect, comprising a box body, a valve body is arranged inside the box body, a valve handwheel is arranged inside the box body, a cover plate is hinged on the box body, a limiting hole is provided on the cover plate, a connecting rod is slidably connected to the box body, one end of the connecting rod is fixedly connected to a pressing column, the end of the connecting rod away from the pressing column is fixedly connected to a limiting block, a tension spring is sleeved on the connecting rod, the two ends of the tension spring are respectively fixedly connected to the limiting block and the box body, and a handle is fixedly connected to the cover plate.

[0006] As a further solution of the utility model: an observation window is arranged on the cover plate, and the observation window is made of transparent material.

[0007] As a further solution of the utility model: a sleeve is fixedly connected to the valve handwheel, and a screw is arranged on the sleeve.

[0008] As a further solution of the utility model: a rotating rod is arranged on the valve body, and a plastic pad is arranged on the handle.

[0009] As a further solution of the utility model: the rotating rod is arranged inside the box body, and the sleeve is arranged at one end of the rotating rod.

[0010] As a further solution of the utility model: the limit block is slidably connected to the box body, and the tension spring is arranged inside the box body.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The cast iron valve with good sealing effect is provided with a pressing column, a connecting rod, a tension spring, a limit block, a cover plate and a limit hole. When the valve handwheel is not in use, the cover plate is rotated by holding the handle so that the cover plate contacts the inclined surface on the limit block, and the cover plate pushes the limit block open. When the limit hole contacts the limit block, since the limit hole is hollow, the tension spring will be reset and pull the limit block so that the limit block enters the limit hole, thereby limiting the cover plate. When the valve handwheel needs to be used, the pressing column is pressed to drive the connecting rod and the limit block to move so that the limit block is separated from the limit hole. At this time, the limit hole does not limit the cover plate, so the cover plate can be opened and the valve handwheel can be used. By quickly opening and closing the cover plate, it is convenient for personnel to use the valve handwheel, and the valve handwheel can be protected when the cover plate is closed, so that personnel will not accidentally touch the valve handwheel to cause the valve handwheel to be opened, thereby avoiding property loss.

[0013] 2. The cast iron valve with good sealing effect is provided with screws, sleeves, valve handwheels and rotating rods. When the valve handwheel needs to be disassembled for maintenance, the screws can be loosened to disassemble the valve handwheel for maintenance. After the maintenance is completed, the sleeve is put on the rotating rod and the screws are tightened to install the valve handwheel. The cast iron valve can quickly install and disassemble the valve handwheel, thereby facilitating the maintenance of the valve handwheel and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the cross section of the box body of the utility model;

[0016] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the cover plate of the utility model;

[0018] In the figure: 1. Box body; 2. Valve body; 3. Valve handwheel; 4. Cover plate; 5. Observation window; 6. Handle; 7. Sleeve; 8. Screw; 9. Rotating rod; 10. Limit block; 11. Connecting rod; 12. Tension spring; 13. Pressing column; 14. Plastic pad; 15. Limit hole. DETAILED DESCRIPTION

[0019] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0020] like Figure 1-4As shown, the utility model provides a technical solution: a cast iron valve with good sealing effect, including a box body 1. Because the box body 1 is provided, when the cover plate 4 is closed, the box body 1 and the cover plate 4 form a sealed space to seal the valve handwheel 3, and the sealing effect is good, and the valve handwheel 3 can be waterproof, thereby preventing the valve handwheel 3 from rusting. A valve body 2 is arranged inside the box body 1, and a valve handwheel 3 is arranged inside the box body 1. The cover plate 4 is hinged on the box body 1, and an observation window 5 is arranged on the cover plate 4. Because the observation window 5 is provided, the internal situation of the box body 1 can be observed through the observation window 5, and when the valve handwheel 3 needs maintenance, it can be discovered in time, thereby improving the maintenance efficiency of the valve handwheel 3, and the observation window 5 is made of transparent material.

[0021] A limiting hole 15 is provided on the cover plate 4 , a connecting rod 11 is slidably connected to the box body 1 , one end of the connecting rod 11 is fixedly connected to a pressing column 13 , a rotating rod 9 is arranged inside the box body 1 , and a sleeve 7 is arranged at one end of the rotating rod 9 .

[0022] One end of the connecting rod 11 away from the pressing column 13 is fixedly connected to the limit block 10, and a tension spring 12 is sleeved on the connecting rod 11. The two ends of the tension spring 12 are respectively fixedly connected to the limit block 10 and the box body 1. The limit block 10 is slidably connected to the box body 1, and the tension spring 12 is arranged inside the box body 1.

[0023] A handle 6 is fixedly connected to the cover plate 4. Because the handle 6 is provided, the handle 6 provides a gripping point, so that it is convenient for personnel to open the cover plate 4, thereby improving the convenience of operation. A sleeve 7 is fixedly connected to the valve handwheel 3, and a screw 8 is provided on the sleeve 7. A rotating rod 9 is provided on the valve body 2. A plastic pad 14 is provided on the handle 6. Because the plastic pad 14 is provided, when a person holds the plastic pad 14, the plastic pad 14 can play an anti-slip role, thereby improving the stability of operation.

[0024] The working principle of the utility model is:

[0025] When the valve handwheel 3 is not in use, the grip handle 6 drives the cover plate 4 to rotate, so that the cover plate 4 contacts the inclined surface on the limit block 10, and the cover plate 4 pushes the limit block 10 open. When the limit hole 15 contacts the limit block 10, since the limit hole 15 is hollow, the tension spring 12 will reset and pull the limit block 10 so that the limit block 10 enters the limit hole 15, thereby limiting the cover plate 4. When the valve handwheel 3 needs to be used, the pressing column 13 is pressed to drive the connecting rod 11 and the limit block 10 to move, so that the limit block 10 is disengaged from the limit hole 15. At this time, the limit hole 15 does not limit the cover plate 4, so the cover plate 4 can be opened and the valve handwheel 3 can be used. When the valve handwheel 3 needs to be disassembled and maintained, the screw 8 can be loosened to disassemble the valve handwheel 3 for maintenance. After the maintenance is completed, the sleeve 7 is put on the rotating rod 9, and the screw 8 can be tightened to install the valve handwheel 3.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0027] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A cast iron valve with good sealing effect, comprising a housing (1), characterized in that: A valve body (2) is arranged inside the box body (1), a valve hand wheel (3) is arranged inside the box body (1), a cover plate (4) is hinged on the box body (1), a limit hole (15) is provided on the cover plate (4), a connecting rod (11) is slidably connected to the box body (1), one end of the connecting rod (11) is fixedly connected to a pressing column (13), one end of the connecting rod (11) away from the pressing column (13) is fixedly connected to a limit block (10), a tension spring (12) is sleeved on the connecting rod (11), two ends of the tension spring (12) are respectively fixedly connected to the limit block (10) and the box body (1), and a handle (6) is fixedly connected to the cover plate (4).

2. A cast iron valve with good sealing effect according to claim 1, characterized in that: The cover plate (4) is provided with an observation window (5), and the observation window (5) is made of a transparent material.

3. A cast iron valve with good sealing effect according to claim 1, characterized in that: A sleeve (7) is fixedly connected to the valve hand wheel (3), and a screw (8) is arranged on the sleeve (7).

4. A cast iron valve with good sealing effect according to claim 3, characterized in that: The valve body (2) is provided with a rotating rod (9), and the handle (6) is provided with a plastic pad (14).

5. A cast iron valve with good sealing effect according to claim 4, characterized in that: The rotating rod (9) is arranged inside the box body (1), and the sleeve (7) is arranged at one end of the rotating rod (9).

6. A cast iron valve with good sealing effect according to claim 1, characterized in that: The limit block (10) is slidably connected to the box body (1), and the tension spring (12) is arranged inside the box body (1).

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