CN203836242U - Butterfly-gate-type throttle valve - Google Patents

Abstract

The purpose of this utility model is to provide a butterfly-gate throttle valve, including a valve body, a hollow shaft, a butterfly plate, a main throttle plate, a gate plate, a rotating bracket, a screw, a connecting rod, and the main throttle plate is fixed in the valve body , the outline of the main throttle plate fits the side wall of the valve body, the main throttle plate is provided with a butterfly plate hole and the first main throttle plate throttle hole, the butterfly plate is set in the butterfly plate hole, and the lower part of the hollow shaft is installed on the In the valve body, the upper part of the hollow shaft passes through the side wall of the valve body, the hollow shaft is provided with internal threads, the rotating bracket is fixed on the side wall of the valve body, the internal thread is set in the rotating bracket, and the screw is installed in the rotating bracket and the hollow shaft at the same time And respectively cooperate with the internal thread of the rotating bracket and the hollow shaft. The end of the screw is equipped with a hand wheel, the upper part of the hollow shaft is equipped with a handle, the lower part of the hollow shaft is connected with the butterfly plate, the connecting rod and the gate are arranged in the valve body, and the connecting rod The lower end is connected with the flashboard, and the upper part of the connecting rod is installed in the hollow rotating shaft. The utility model has the advantages of using both the butterfly valve and the gate valve.

Description

Butterfly-gate throttle valve

technical field

The utility model relates to a valve, specifically a mechanical valve.

Background technique

Butterfly valves and gate valves are common forms among many types of valves, and the fluid flow can be adjusted by changing the throttling section or throttling length. In order to improve the throttling effect and meet the flow change requirements under specific conditions, a combined valve that combines the advantages of the two is needed. Many companies and research institutions at home and abroad are committed to the optimal design of the throttle valve.

VT Foot Valve Company of the United States designed and manufactured a pneumatic flat gate valve without diversion holes. The pressing force of the gate to the valve seat is controlled by the medium pressure acting on the floating gate or floating valve seat; Jiangsu University and the electric power department jointly, The research and development of valve-related devices has been carried out. The on-off valve of patent No. CN93118956.X is composed of valve body, valve disc, valve disc translation mechanism and valve disc rotation mechanism. Synthesis of rotary motion of the axis. Therefore, during the movement of the disc of this on-off valve, there is no relative movement and dynamic friction between the valve seat and the sealing surface, and it has the characteristics of wear resistance and long sealing life. A butterfly gate combination valve with patent number CN200420117252.4 is used to provide a combination valve integrating cut-off and adjustment functions and a simple structure. It adds a butterfly plate to the outlet channel body of the gate valve. When the gate valve adopts the side sealing form, the valve body is formed by the butt joint of the inlet and outlet channel bodies. The unique elastic seal can form two seals on both sides of the gate, the elastic seal is not in contact with the medium, and the flow passage is a complete straight-through pipe, which has good sealing performance, small flow resistance, no eddy current and sediment, and wear resistance. . It has two functions of cut-off and flow adjustment, which can save the number of valves in the pipeline system and reduce operating costs, and is suitable for installation and use in the delivery pipeline.

Most of the currently used throttle valves are in a single form, which often has the disadvantages of cumbersome manufacturing process, complicated control and limited application occasions. The valves mentioned above that involve the combination of butterfly and gate are only a butterfly valve added to the pipeline in front (or behind) of the gate valve, which is a simple combination of the two valves and does not reflect the characteristics of both. and advantage effects.

Contents of the invention

The purpose of the utility model is to provide a butterfly-gate throttle valve which has the advantages of both a butterfly valve and a gate valve.

The purpose of this utility model is achieved in that:

The utility model butterfly-gate throttle valve is characterized in that it includes a valve body, a hollow shaft, a butterfly plate, a main throttle plate, a gate plate, a rotating bracket, a screw, and a connecting rod, and the main throttle plate is fixed in the valve body. , the outline of the main throttle plate fits the side wall of the valve body, the main throttle plate is provided with a butterfly plate hole and the first main throttle plate throttle hole, the butterfly plate is set in the butterfly plate hole, and the lower part of the hollow shaft is installed on the In the valve body, the upper part of the hollow shaft passes through the side wall of the valve body, the hollow shaft is provided with internal threads, the rotating bracket is fixed on the side wall of the valve body, the internal thread is set in the rotating bracket, and the screw is installed in the rotating bracket and the hollow shaft at the same time And respectively cooperate with the internal thread of the rotating bracket and the hollow shaft, the end of the screw is installed with a hand wheel, the upper part of the hollow shaft is equipped with a handle, the lower part of the hollow shaft is connected with the butterfly plate, the connecting rod and the gate are arranged in the valve body, and the connecting rod The lower end is connected with the flashboard, and the upper part of the connecting rod is installed in the hollow rotating shaft.

The utility model can also include:

1. There is a groove in the middle of the hollow shaft, and a cross bar is installed in the slot, and the cross bar is connected with the upper end of the connecting rod. When the hollow shaft moves up and down, the connecting rod and gate plate move up and down driven by the cross bar. When the hollow shaft rotates , the groove and the cross bar move relatively, and the connecting rod does not rotate thereupon.

2. When the ram is at the lowest end, the ram will block the orifice of the first main throttle plate, and as the ram moves upward, the ram will move out of the position of the orifice of the first main throttle plate.

3. The second-third main throttle plate throttle hole is set on the main throttle plate, and the first-second gate plate throttle hole is set on the gate plate. When the gate plate is at the bottom end, the gate plate will be the second-second gate The orifice of the third main throttle plate is blocked, and as the gate moves upward and the gate moves out of the position of the orifice of the first main throttle plate, the orifice of the second main throttle plate and the orifice of the first gate plate will The throttle hole of the third main throttle plate communicates with the throttle hole of the second gate plate.

The utility model has the advantages that: the utility model realizes the integrated combination of the butterfly valve and the gate valve, has both the structural characteristics and the advantages of use, saves the use space, and improves the effect of the throttle valve serving the field operation. The utility model can serve pipelines and other application occasions, realize the opening and closing of the butterfly plate and the throttle hole through the rotary motion of the butterfly plate and the linear motion of the gate plate, and achieve the effect of adjusting the opening of different flow rates, and the butterfly plate can be adjusted during the adjustment process. Plate and gate will not interfere with each other.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Figure 2 is a front view of Figure 1:

Fig. 3 is the back view of Fig. 1;

Figure 4 is a schematic diagram of the screw and the rotating bracket:

Fig. 5 is a schematic diagram of butterfly plate and ram fully closed;

Fig. 6 is a side view of Fig. 5;

Fig. 7 is a schematic diagram of butterfly plate opening and gate closing;

Fig. 8 is a side view of Fig. 7;

Fig. 9 is a schematic diagram of butterfly plate opening and gate single hole opening;

Figure 10 is a side view of Figure 9;

Fig. 11 is a schematic diagram of the full opening of the butterfly plate and the ram;

FIG. 12 is a side view of FIG. 11 .

Detailed ways

The utility model is described in more detail below in conjunction with accompanying drawing example:

1-12, the utility model butterfly-gate throttle valve consists of a handwheel 1, a screw rod 2, a handle 3, a rotating bracket 4, a butterfly plate 5, a hollow shaft 6, a valve body 7, a connecting rod 8, and a main throttling valve. Plate 9, gate 10, gate throttle hole 11, flange 12, connection hole 13 and main throttle plate throttle hole 14; the throttle valve body 7 passes through the connection hole 13 on the flange 12 at both ends It is connected with the throttling pipeline; the throttling part combines the main structural features of the butterfly valve and the gate valve, and is composed of the main throttling plate 9, the butterfly plate 5 and the gate plate 10, and the butterfly plate 5, the gate plate 10 and the main throttle plate 9 The relative movement achieves the throttling effect; the butterfly plate 5 rotates around its hollow rotating shaft 6 to adjust the opening degree, and when it is closed, it completely fits the annular inner wall of the main throttle plate 9; when the gate plate 10 is lifted and lowered, the gate plate throttle hole 11 and The orifice 14 of the main throttle plate cooperates with each other, and the cross-sectional area of the orifice 11 and 14 is the same, which has the function of realizing various opening adjustments; There will be no mutual interference during the state.

The utility model can also include:

1. Square or other shape butterfly plate, gate and valve body structure.

2. The number of throttle holes is more than three and the distribution on the throttle plate is different.

3. The number of butterfly plates and rams increases and the relative position of the main throttle plate changes.

4. The ram shaft adopts the internal thread and the screw to cooperate to realize the lifting of the butterfly plate.

5. The butterfly plate shaft and gate shaft are arranged separately.

6. Flexible connection with mainstream pipelines.

With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the main structure of the utility model includes a hand wheel 1, a screw rod 2, a handle 3, a rotating bracket 4, a butterfly plate 5, a hollow shaft 6, a valve body 7, a connecting rod 8, The main throttle plate 9, the gate plate 10, the gate plate throttle hole 11, the flange 12, the connecting hole 13 and the main throttle plate throttle hole 14.

The butterfly-gate throttle valve is connected to the mainstream pipeline through the flange 12, the main throttle plate 9 is consolidated with the valve body 7, and forms a throttling part together with the butterfly plate 5 and the gate plate 10; the hollow shaft 6 Connected with the butterfly plate 5 and the handle 3, one end of the connecting rod 8 is connected with the gate 10, the other end is connected with the screw rod and runs through the hollow shaft 6: the other end of the screw rod 2 is fixedly connected with the hand wheel, and the internal thread structure of the rotating bracket 4 Cooperate to drive the lifting and lowering of the gate 10; there are three main throttle plate throttle holes 14 distributed on the design position of the main throttle plate 9, and two gate plate throttle holes 11 are distributed on the gate plate 10, which are connected with the main throttle plate. The plate orifice 14 cooperates to realize throttling.

Combined with the above structural description, when the utility model is working, the position of the handle 3 is changed by turning, and the hollow shaft 6 is driven to rotate to realize the adjustment of different openings of the butterfly plate 5 until it is fully opened; when it is necessary to further increase the flow, rotate the hand Wheel 1, the rise of the gate 10 is adjusted by the linear movement of the screw 2, and the position of the throttle hole 11 of the gate changes accordingly. When the lower end hole of the throttle hole 14 of the main throttle plate is fully opened, the single hole of the gate 10 is opened. state, continue to adjust until the two holes at the upper end of the throttle hole 11 of the gate plate and the throttle hole 14 of the main throttle plate completely overlap to reach the maximum flow opening.

Figure 5, Figure 7, Figure 9 and Figure 11 show the four typical operations of the butterfly plate and the gate fully closed, the butterfly plate open, the gate closed, the butterfly plate open, the single hole of the gate open, and the butterfly plate and the gate fully open State, combined with other valve plate switch sequences constitutes the working process of the utility model flow regulation.

Claims (5)

1. butterfly-lock formula throttle valve, it is characterized in that: comprise valve body, hollow rotating shaft, butterfly plate, main Rectifier plate, flashboard, swinging mounting, screw rod, connecting rod, main Rectifier plate is fixed in valve body, profile and the body wall of main Rectifier plate fit, butterfly plate hole and the first main Rectifier plate throttle orifice are set on main Rectifier plate, butterfly plate is arranged in butterfly plate hole, hollow rotating shaft bottom is arranged in valve body, hollow rotating shaft top passes the sidewall of valve body, in hollow rotating shaft, be provided with internal thread, swinging mounting is fixed on body wall, internal thread is set in swinging mounting, screw rod is arranged in swinging mounting and hollow rotating shaft simultaneously and matches with the internal thread of swinging mounting and hollow rotating shaft respectively, handwheel is installed in the end of screw rod, hollow rotating shaft top mounting handle, hollow rotating shaft bottom is connected with butterfly plate, connecting rod and flashboard are arranged in valve body, the underpart of connecting rod is connected with flashboard, the top of connecting rod is arranged in hollow rotating shaft.

2. butterfly-lock formula throttle valve according to claim 1, it is characterized in that: the middle part of hollow rotating shaft arranges groove, cross bar is installed in groove, cross bar is connected with the upper end portion of connecting rod, when hollow rotating shaft moves up and down, connecting rod and flashboard move up and down under the drive of cross bar, when hollow rotating shaft rotates, groove and cross bar relatively move, and connecting rod does not rotate thereupon.

3. butterfly-lock formula throttle valve according to claim 1 and 2, is characterized in that: when flashboard is positioned at bottom, flashboard blocks the first main Rectifier plate throttle orifice, and along with after flashboard moves up, flashboard shifts out the first main Rectifier plate throttle orifice position.

4. butterfly-lock formula throttle valve according to claim 1 and 2, it is characterized in that: the main Rectifier plate throttle orifice of second-tri-is set on main Rectifier plate, the the first-the second flashboard throttle orifice is set on flashboard, when flashboard is positioned at bottom, flashboard blocks the main Rectifier plate throttle orifice of second-tri-, along with flashboard moves up, flashboard shifts out behind the first main Rectifier plate throttle orifice position, the second main Rectifier plate throttle orifice communicates with the first flashboard throttle orifice, and the 3rd main Rectifier plate throttle orifice communicates with the second flashboard throttle orifice.

5. butterfly-lock formula throttle valve according to claim 3, it is characterized in that: the main Rectifier plate throttle orifice of second-tri-is set on main Rectifier plate, the the first-the second flashboard throttle orifice is set on flashboard, when flashboard is positioned at bottom, flashboard blocks the main Rectifier plate throttle orifice of second-tri-, along with flashboard moves up, flashboard shifts out behind the first main Rectifier plate throttle orifice position, the second main Rectifier plate throttle orifice communicates with the first flashboard throttle orifice, and the 3rd main Rectifier plate throttle orifice communicates with the second flashboard throttle orifice.