Valve sequence interlocking indicating mechanism

Abstract

The utility model relates to valve indication, in particular to a valve sequence interlocking indication mechanism, and solves the problem of valve indication locking. Comprising an inner ring and an outer ring, a mounting hole for fixed assembly is formed in the center of the inner ring, the outer ring is movably connected outside the inner ring in a sleeved mode, and the interlocking rod is connected with the upper disc body and the lower disc body in a sleeved mode. The outer ring coaxially rotates relative to the inner ring, a cavity is formed in the outer ring, the cavity wall on one side of the cavity is the outer wall of the inner ring, the outer ring is in linkage with the upper disc body through an interlocking rod, the outer ring and the inner ring are provided with a direction adjusting ratchet wheel assembly in the cavity, and an exposed interlayer and an indicating ring are further arranged in the outer ring. An interlocking ratchet wheel structure is adopted to limit opening and closing, the indicating function is considered, use is convenient, the daily use requirement is met, misoperation is prevented, and practicability and safety are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve indication, especially a valve sequence interlock indication mechanism. BACKGROUND

[0002] In the natural gas field, all kinds of valves are often used, such as stop valve, butterfly valve, ball valve and the like. For the most common stop valve, it is frequently opened and closed, and is also matched with an opening and closing indication board. However, in a high-frequency operation scene, or due to other situations, it is possible to cause negligence, so that the actual state does not match the indication state. Therefore, there is a certain safety hazard, and it also affects the subsequent cooperation of other operations. CONTENT OF THE UTILITY MODEL

[0003] In view of the existing technical deficiencies, the utility model provides a valve sequence interlock indication mechanism.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a valve sequence interlock indication mechanism, comprising an upper disc body fixedly installed at a valve hand wheel, a lower disc body fixedly installed at the bottom of a valve stem or a valve seat, and an interlock rod connecting the upper disc body and the lower disc body, the lower disc body is composed of an inner ring and an outer ring, the inner ring is centrally provided with a fixedly assembled mounting hole, the outer ring is movably sleeved on the outer ring, and the outer ring rotates relative to the coaxial line of the inner ring, a cavity is arranged in the outer ring, one side cavity wall of the cavity is the outer wall of the inner ring, the outer ring is connected with the upper disc body through the interlock rod, the outer ring and the inner ring are provided with a direction adjusting ratchet assembly in the cavity, and a cladding layer and an indication ring are further arranged in the outer ring.

[0005] The direction adjusting ratchet assembly comprises ratchet teeth arranged on the outer wall of the inner ring, pawls on the cavity wall of the cavity of the outer ring and a swing knob rotatably assembled on the outer ring, the ratchet teeth are uniformly arranged along the circumference, one end of the pawl is hingedly connected, a spring is arranged between the other end of the pawl and the cavity wall of the outer ring, the spring has an elastic extension tendency, and the pawl and the swing knob are in abutting connection.

[0006] The pawls are arranged in pairs, the swing knob is arranged between the pawls, the swing knob is in T-shaped structure, the swing knob and the pawls have a left limit state, a double limit state and a right limit state, and the swing knob switches between the left limit state, the double limit state and the right limit state by abutting against the pawl through rotation.

[0007] The outer ring is provided with an opening communicating with the cladding layer on the top surface, the indication ring is provided with a push rod at the opening, and the surface of the indication ring is provided with a color layer and an indication mark.

[0008] The upper disc body is provided with a plurality of uniformly arranged hollow grooves.

[0009] The mounting hole is in a regular hexagonal structure.

[0010] The color marking end is arranged at each of opposite ends of the knob.

[0011] The valve sequence interlocking indicating mechanism has the advantages that the valve sequence interlocking indicating mechanism provided by the utility model adopts interlocking ratchet wheel structure to limit opening and closing, has the indicating function, is convenient to use, meets daily use requirements, has the effect of preventing misoperation, and improves practicality and safety. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 The utility model discloses a structure schematic diagram;

[0013] Fig. 2 The utility model discloses a lower disc body overhead structure schematic diagram;

[0014] Fig. 3 The utility model discloses a lower disc body side view half -section structure schematic diagram. DETAILED DESCRIPTION

[0015] As Figs. 1-3 As shown in a kind of valve sequence interlocking indicating mechanism, including installation fixed in valve hand wheel upper disc body 1, installation fixed in valve stem bottom or valve seat lower disc body 2, the interlocking rod 3 of connection upper disc body 1 and lower disc body 2.Upper disc body 1 is placed on valve hand wheel, interlocking rod 3 passes through hand wheel and plays the effect of linkage when rotating, also can increase positioning block in upper disc body 1, so that positioning block is compatible with the recess of valve hand wheel, interlocking rotation is more stable and reliable.Lower disc body 2 is also composed of inner ring 4 and outer ring 5, the installation hole 6 of fixed assembly is arranged in the center of inner ring 4, outer ring 5 is movably sleeved in inner ring 4, and outer ring 5 rotates coaxially relative to inner ring 4, chamber 7 is arranged in outer ring 5, one side cavity wall of chamber 7 is the outer wall of inner ring 4, outer ring 5 is linked between upper disc body 1 and interlocking rod 3, outer ring 5 and inner ring 4 are provided with direction adjusting ratchet wheel assembly in chamber 7, outer ring 5 is also provided with exposed interlayer 8 and indicating ring 9.Inner ring 4 is relative static reference system, outer ring 5 rotates relative to inner ring 4, and outer ring 5 is also linked between upper disc body 1 and rotates.The relative rotation of outer ring 5 and inner ring 4 can be adjusted by direction adjusting ratchet wheel assembly, realizes unidirectional rotation or locking.Indicating ring 9 is manually adjusted, set valve at this place as normally open or normally closed state, and specifically determined according to actual use needs.

[0016] The direction adjusting ratchet assembly comprises ratchet teeth 10 arranged on the outer wall of the inner ring 4, pawls 11 arranged on the cavity wall of the cavity 7 of the outer ring 5, and a swing knob 12 rotatably arranged on the outer ring 5. The ratchet teeth 10 are uniformly arranged along the circumference. One end of the pawl 11 is hingedly connected, and a spring 13 is arranged between the other end of the pawl 11 and the cavity wall of the cavity 7 of the outer ring 5. The spring 13 has an elastic stretching tendency. The pawl 11 and the swing knob 12 are in abutting linkage. The structure here is similar to that of a two-way switching ratchet wrench. In a conventional ratchet wrench, when the pointer is turned to one side, it can be correspondingly rotated in one direction. In this embodiment, the swing knob 12 is turned to one side to abut and press the pawl 11, so that the pawl 11 is compressed against the elastic force, and the pawl 11 on this side is not in contact with the ratchet teeth 10.

[0017] The pawls 11 are arranged in pairs, and the swing knob 12 is arranged between the pawls 11. The swing knob 12 has a T-shaped structure, and has a left limit state, a double limit state and a right limit state between the swing knob 12 and the pawls 11. The swing knob 12 is switched between the left limit state, the double limit state and the right limit state by being rotated to abut the pawl 11. It should be noted that in the double limit state, the swing knob 12 does not abut and contact any pawl 11, and the pawl 11 is in close contact with the ratchet teeth 10 by the elastic force. At this time, the rotation cannot be operated. Due to the fact that in the industry operation, special valves may be temporarily required to be operated, the above arrangement can avoid misoperation beyond the operation ticket process.

[0018] The outer ring 5 is provided with an opening communicating with the interlayer 8 on the top surface. The indicating ring 9 is provided with a push rod 14 at the opening. The surface of the indicating ring 9 is provided with a color layer and an indicating mark. The color layer can be red and green. The red color is normally closed, and the green color is normally open. Moreover, the indicating mark can be matched with words to prompt the state of the valve. The push rod 14 is convenient for operating the indicating ring 9 to correctly and reliably display.

[0019] The upper disc body 1 is provided with a plurality of uniformly arranged hollow grooves 15. This is one embodiment, which is beneficial to form a shape structure more suitable for the hand wheel. It should be noted that even if there is no hollow groove 15, it can also play a shielding role, which is beneficial to improve the service life of the valve. The mounting hole 6 has a regular hexagonal structure, so that the lower disc body 2 can be fixed with the bottom of the valve stem or the valve seat, but it is by no means limited to this.

[0020] The swing knob 12 is provided with a color marking end 16 at each of the opposite ends. This mainly prompts the current operable state, such as only opening or closing, or prohibiting operation. Since the operating personnel often use tools such as ratchet wrenches, they are familiar with and easy to use such design, which greatly improves the safety and reliability. The above has both double color marking indications and interlocking structures to limit operation, which is a clever and reasonable design and meets the actual use requirements.

[0021] In the description of the utility model, need explain, the term "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relation based on the orientation or positional relation shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore can not be understood as the limitation to the utility model, at the same time, the basic principle, main features and the advantages of the utility model are shown and described above, and the technical personnel of the industry should understand.

Claims

1. A valve sequential interlock indicator mechanism, characterized by, The valve handle locking device comprises an upper disc fixed on a valve handle, a lower disc fixed on a valve rod bottom or a valve seat, and an interlocking rod connecting the upper disc and the lower disc.

2. A valve sequential interlock indicating mechanism as claimed in claim 1, wherein, The valve handle locking device further comprises a direction adjusting ratchet assembly in the cavity of the outer ring.

3. A valve sequential interlock indicating mechanism as claimed in claim 2, wherein, The direction adjusting ratchet assembly comprises a ratchet tooth on the outer wall of the inner ring, a pawl on the cavity wall of the outer ring, and a swing knob rotatably arranged on the outer ring.

4. A valve sequencing interlock indicating mechanism as defined in claim 2 wherein, The ratchet tooth is uniformly arranged along the circumference.

5. A valve sequencing interlock indicating mechanism as defined in claim 1 wherein, The pawl is hingedly connected at one end and is provided with a spring between the other end and the cavity wall of the outer ring.

6. A valve sequencing interlock indicator as defined in claim 5 wherein, The pawl and the swing knob are in abutting linkage.

7. A valve sequencing interlock indicating mechanism as defined in claim 3 wherein, The pawl is arranged in pairs, and the swing knob is arranged between the pawls. The swing knob is in T-shaped structure. The swing knob has a left limit state, a double limit state and a right limit state. The outer ring is provided with an opening on the top surface, and the indicating ring is provided with a push rod at the opening. The indicating ring is provided with a color layer and an indicating mark on the surface. The upper disc is provided with a plurality of uniformly arranged hollow grooves. The mounting hole is in hexagonal structure. The swing knob is provided with a color mark at opposite ends.

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