Heating network heater steam inlet manual butterfly valve executing mechanism

Abstract

The utility model discloses a manual butterfly valve actuating mechanism for steam admission of a heating network heater. The manual butterfly valve actuating mechanism comprises a manual butterfly valve, a valve seat, a rod seat and a valve rod, wherein the manual butterfly valve is mounted on the surface of a valve seat of the heating network heater; the valve seat is arranged at the bottom end of the manual butterfly valve; the chain wheel is installed on the surface of the valve rod in a sleeving mode, the chain is installed on the chain wheel in a sleeving mode and extends to the ground, the valve rod is in a regular hexagon shape from the side view, and a center base ring is fixed to the inner side of the chain wheel. The chain wheel executing mechanism is adopted to replace an original hand wheel operation mode, the core of the chain wheel executing mechanism is that a chain serves as a transmission medium, the function of remotely operating the valve on the ground is achieved, and due to the design, operators do not need to climb to work any more; the opening and closing actions of the valve can be easily completed by pulling the chain only by standing on the ground, so that the operation difficulty and the safety risk are obviously reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of butterfly valves for heating network heaters, and specifically relates to an actuator for a manual butterfly valve for the steam inlet of a heating network heater. Background Technology

[0002] In a thermal system, the heating network heater is a key piece of equipment. Its operating efficiency and safety are directly related to the stability and energy efficiency of the entire heating system. Especially in large industrial facilities such as thermal power plants, the performance optimization and convenient maintenance of the heating network heater are particularly important. Common heating systems are generally equipped with two heating network heaters. Their steam inlet valves are all designed as manual butterfly valves, which are opened and closed by rotating the handwheel.

[0003] However, because the manual butterfly valve of the heating network heater is installed at a height of 3.5 meters above the ground, although the handwheel on the butterfly valve is not difficult to turn during daily operation and adjustment, the operator has to frequently use a ladder to operate it manually. This not only greatly increases the complexity of operation, but more importantly, working at height itself brings significant safety hazards. The operator may face the risk of slipping while climbing the ladder, and due to the limited body posture during operation, it is difficult to maintain a stable operating state, further increasing the possibility of safety accidents. Therefore, this utility model proposes an actuator for the manual butterfly valve of the steam inlet of the heating network heater. Utility Model Content

[0004] The purpose of this utility model is to provide a manual butterfly valve actuator for the steam inlet of a heating network heater, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a manual butterfly valve actuator for the steam inlet of a heating network heater, comprising:

[0006] A manual butterfly valve installed on the surface of the heating network heater gate seat, a valve seat located at the bottom of the manual butterfly valve, a rod seat fixed to the side of the valve seat, and a valve stem rotatably installed inside the valve seat and extending through to one side of the rod seat.

[0007] The valve stem is fitted with a sprocket mounted on the surface of the valve stem and a chain mounted on the sprocket and extending to the ground. The valve stem is hexagonal in side view. A central base ring is fixed inside the sprocket, and a hexagonal hole adapted to the valve stem is opened in the central base ring.

[0008] Preferably, the central base ring is fitted with the rod seat, and the right end of the valve stem extends through to the right side of the sprocket.

[0009] Preferably, it also includes an anti-detachment mechanism, which is located at the right end of the valve stem and to the right of the sprocket.

[0010] Preferably, the anti-detachment mechanism includes a rectangular top block disposed at the top of the right end of the valve stem and a rectangular insert fixed to the bottom surface of the rectangular top block and extending through to the bottom of the valve stem.

[0011] Preferably, the anti-detachment mechanism further includes an inner sliding groove inside the rectangular top block, an inner sliding block slidably disposed in the inner sliding groove, a connecting rod fixed to the right side surface of the inner sliding block and extending through to the right side of the rectangular top block, a movable locking plate fixed to the side of the connecting rod and extending to the right side surface of the valve stem, a triangular locking block fixed to the bottom surface of the movable locking plate, and a rectangular locking groove opened on the right side surface of the valve stem for the triangular locking block to be engaged, wherein the triangular locking block is engaged in the rectangular locking groove.

[0012] Preferably, a spring is also installed in the inner groove on the right side relative to the inner slider, and the connecting rod passes through the spring.

[0013] Preferably, the left end of the spring abuts against the right side surface of the inner slider, and the right end of the spring abuts against the inner wall of the right end of the inner groove.

[0014] Preferably, the right end surface of the valve stem has a through hole for a rectangular insert to pass through.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model replaces the original handwheel operation method with a sprocket actuator. The core of the sprocket actuator is to realize the function of remote ground operation of valves by using a chain as a transmission medium. This design allows operators to easily complete the opening and closing of valves by pulling the chain without having to climb to a height. This significantly reduces the difficulty of operation and safety risks. Attached Figure Description

[0016] Figure 1 This is a top perspective view of the present invention;

[0017] Figure 2 This is a bottom-view perspective view of the present invention;

[0018] Figure 3 This utility model Figure 1 A magnified view of a portion of region A in the middle;

[0019] Figure 4 This utility model Figure 2 A magnified view of a portion of region B in the middle;

[0020] Figure 5 This is a cross-sectional view of the anti-detachment mechanism of this utility model;

[0021] In the diagram: 1. Valve stem; 2. Sprocket; 21. Central base ring; 3. Chain; 4. Heater gate seat; 5. Manual butterfly valve; 6. Valve seat; 7. Stem seat; 81. Rectangular top block; 82. Rectangular insert; 83. Movable locking plate; 84. Triangular locking block; 85. Rectangular locking groove; 86. Inner sliding groove; 87. Spring; 88. Inner slider; 89. Connecting rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Please see Figures 1 to 4 This is the first embodiment of the present invention, which provides a technical solution: a manual butterfly valve actuator for the steam inlet of a heating network heater, comprising:

[0025] The manual butterfly valve 5 is installed on the surface of the heating network heater door seat 4, the valve seat 6 is set at the bottom of the manual butterfly valve 5, the rod seat 7 is fixed on the side of the valve seat 6, and the valve stem 1 is rotatably installed inside the valve seat 6 and extends through the rod seat 7. The manual butterfly valve 5, including the above-mentioned structures, is a known technology that has been disclosed in the prior art. The valve stem 1 is a rotatable structure. After it is rotated, it can drive the valve plate inside the manual butterfly valve 5 to rotate and realize the opening and closing. The specific structural principle will not be elaborated here. The end of the valve stem 1 originally had a handwheel installed for subsequent operation by the operator. However, this application replaces the handwheel with a sprocket 2 and a chain 3, so that the valve stem 1 can be rotated on the ground through the chain 3 and the sprocket 2, without the need for climbing.

[0026] The valve stem 1 is equipped with a sprocket 2 mounted on the surface of the valve stem 1 and a chain 3 mounted on the sprocket 2 and extending to the ground. The valve stem 1 is hexagonal in side view. A central base ring 21 is welded and fixed to the inner side of the sprocket 2. The central base ring 21 has a hexagonal hole that matches the valve stem 1. When the sprocket 2 is mounted on the valve stem 1, if the sprocket 2 rotates, it will drive the valve stem 1 to rotate as well. This can achieve the same rotation drive of the valve stem 1 as the original handwheel in the prior art. The operator can stand on the ground without the need for a ladder to climb. By pulling the chain 3, the operator can make the sprocket 2 rotate and drive the valve stem 1 to rotate, thus realizing the opening and closing of the butterfly valve.

[0027] In this embodiment, preferably, the central base ring 21 is fitted with the rod seat 7, and the right end of the valve stem 1 extends through to the right side of the sprocket 2.

[0028] Example 2

[0029] Please see Figures 1 to 5 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that the anti-detachment mechanism can be set to ensure the installation stability of the sprocket 2 and prevent the sprocket 2 from slipping off the right end of the valve stem 1 during use.

[0030] Specifically, it also includes an anti-detachment mechanism, which is located at the right end of the valve stem 1 and to the right of the sprocket 2.

[0031] In this embodiment, preferably, the anti-detachment mechanism includes a rectangular top block 81 disposed at the top right end of the valve stem 1 and a rectangular insert 82 welded and fixed to the bottom surface of the rectangular top block 81 and extending through to the bottom of the valve stem 1. The installation of the rectangular top block 81 and the rectangular insert 82 can prevent the sprocket 2 from slipping off the right end of the valve stem 1 during subsequent use, thus ensuring the installation stability of the sprocket 2.

[0032] In this embodiment, preferably, the anti-detachment mechanism further includes an inner sliding groove 86 opened inside the rectangular top block 81, an inner sliding block 88 slidably disposed in the inner sliding groove 86, a connecting rod 89 welded and fixed to the right side surface of the inner sliding block 88 and extending through to the right side of the rectangular top block 81, a movable locking plate 83 welded and fixed to the side of the connecting rod 89 and extending to the right side surface of the valve stem 1, a triangular locking block 84 welded and fixed to the bottom surface of the movable locking plate 83, and a rectangular slot 85 opened on the right side surface of the valve stem 1 for the triangular locking block 84 to be engaged. The triangular locking block 84 is engaged in the rectangular slot 85, which can limit the movable locking plate 83 and the rectangular top block 81, prevent the movable locking plate 83 and the rectangular top block 81 from moving upward, and ensure the installation stability of the rectangular top block 81 and the rectangular insert 82.

[0033] In this embodiment, preferably, a spring 87 is also installed in the inner groove 86 on the right side relative to the inner slider 88, and the connecting rod 89 passes through the spring 87. Under the pushing action of the spring 87, the triangular locking block 84 can be stably locked in the rectangular locking groove 85 during daily use, ensuring the limiting stability of the movable locking plate 83 and the rectangular top block 81. When it is necessary to remove the rectangular top block 81 and the rectangular insert 82, simply pull the movable locking plate 83 forcefully to the side, so that the connecting rod 89 moves the inner slider 88 to the side and compresses the spring 87, causing the triangular locking block 84 to gradually move out of the rectangular locking groove 85. Then the movable locking plate 83 and the rectangular top block 81 can be moved upward, realizing the removal of the rectangular top block 81 and the rectangular insert 82. Without the obstruction of the rectangular top block 81 and the rectangular insert 82, the sprocket 2 can be disassembled and assembled.

[0034] In this embodiment, preferably, the left end of the spring 87 abuts against the right side surface of the inner slider 88, and the right end of the spring 87 abuts against the inner wall of the right end of the inner groove 86.

[0035] In this embodiment, preferably, the right end surface of the valve stem 1 is provided with a through hole for the rectangular insert 82 to pass through.

[0036] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat grid heater inlet manual butterfly valve actuator characterized by: include: A manual butterfly valve (5) installed on the surface of the heating network heater door seat (4), a valve seat (6) set at the bottom of the manual butterfly valve (5), a rod seat (7) fixed on the side of the valve seat (6), and a valve stem (1) rotatably installed inside the valve seat (6) and extending through to one side of the rod seat (7). The valve stem (1) is fitted with a sprocket (2) on the surface of the valve stem (1) and a chain (3) fitted on the sprocket (2) and extending to the ground. The valve stem (1) is hexagonal in side view. A central base ring (21) is fixed on the inner side of the sprocket (2), and a hexagonal hole adapted to the valve stem (1) is opened in the central base ring (21). The valve stem (1) also includes an anti-detachment mechanism. The anti-detachment mechanism is located at the right end of the valve stem (1) and to the right of the sprocket (2). The anti-detachment mechanism includes a rectangular top block (81) located at the top of the right end of the valve stem (1) and a rectangular insert (82) fixed to the bottom surface of the rectangular top block (81) and extending to the bottom of the valve stem (1). The anti-detachment mechanism also includes an inner groove (86) opened inside the rectangular top block (81) and an inner slider (82) slidably set in the inner groove (86). 88) A connecting rod (89) fixed on the right side surface of the inner slider (88) and extending through to the right side of the rectangular top block (81); a movable retaining plate (83) fixed on the side of the connecting rod (89) and extending to the right side surface of the valve stem (1); a triangular retaining block (84) fixed on the bottom surface of the movable retaining plate (83); and a rectangular slot (85) opened on the right side surface of the valve stem (1) for the triangular retaining block (84) to be inserted into. The triangular retaining block (84) is inserted into the rectangular slot (85). A spring (87) is also installed in the inner slide groove (86) relative to the right side of the inner slider (88), and the connecting rod (89) passes through the spring (87). The left end of the spring (87) abuts against the right side surface of the inner slider (88), and the right end of the spring (87) abuts against the inner wall of the right end of the inner slide groove (86).

2. A manual butterfly valve actuator for a heat exchanger inlet according to claim 1, characterized in that: The central base ring (21) is fitted with the rod seat (7), and the right end of the valve stem (1) extends through to the right side of the sprocket (2).

3. A manual butterfly valve actuator for a heat exchanger inlet according to claim 1, characterized in that: The right end surface of the valve stem (1) has a through hole for the rectangular insert (82) to pass through.

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