Closed valve with transmission structure

Abstract

The utility model discloses a closed valve with a transmission structure, relates to the technical field of closed valves, and aims to solve the problems that in an existing closed valve, due to the fact that a designed power structure cannot generate continuous horizontal pressing force on a closed door, the leakage risk exists in sealing between the closed door and a box body, and the sealing effect is poor. According to the technical scheme, the safety valve is characterized by comprising a valve body, one end of the valve body is fixedly connected with a driving motor used for driving, the output end of the driving motor penetrates through the outer side of the valve body and extends into the valve body, and the driving motor is fixedly connected with a driving shaft; a sealing valve cavity for air circulation is formed in one face of the valve body, the outer side of the driving shaft is movably connected with a sealing door plate used for covering the sealing valve cavity, a transmission mechanism used for transmission control is arranged between the driving shaft and the sealing door plate, and the effect that the valve can achieve rapid opening and closing movement is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of closed valve, concretely is a kind of closed valve with transmission structure. BACKGROUND

[0002] Biological closed isolation air-tight valve series product is used for the isolation and sealing device of high-grade biological safety facility or high-activity high-toxicity pharmaceutical facility, ventilation pipeline and isolation protection equipment, opens and closes by valve actuator when operating, isolates toxic and harmful substances in ventilation pipeline, prevents aerosol overflow to cause biological hazard problem to people and surrounding environment.

[0003] However, the device and the prior art still have the following defects:

[0004] In the existing closed valve, the design power structure cannot generate continuous horizontal pressing force on the closed door, which leads to the risk of leakage between the closed door and the box body, and causes danger to the site environment and personnel. At the same time, the structural resistance of the closed door during opening and closing is relatively large, and a large torque actuator is needed to complete the opening and closing task, which has deficiencies in corresponding time and safety. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a closed valve with transmission structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A closed valve with transmission structure, comprising a valve body, one end of the valve body is fixedly connected with a drive motor for driving, the output end of the drive motor extends to the inside of the valve body through the outside of the valve body, the drive motor is fixedly connected with a drive shaft, one side of the valve body is provided with a closed valve cavity for air circulation, the outside of the drive shaft is movably connected with a sealing door plate for closing the closed valve cavity, and a transmission mechanism for transmission control is arranged between the drive shaft and the sealing door plate.

[0008] By adopting the above technical scheme, the transmission structure is used as the power mechanism for opening and closing the closed door, specifically two connecting rods are connected by a transmission shaft, the closed door is assembled on a sliding block, and the sliding block completes the opening and closing process under the movement of the linkage arm along the track.

[0009] Further, the transmission mechanism comprises a first transmission shaft, the first transmission shaft is rotatably connected with the drive shaft, a second transmission shaft is rotatably connected with the first transmission shaft, a guide block is rotatably connected with the outside of the second transmission shaft, and the upper end of the guide block is fixedly connected with the sealing door plate.

[0010] Further, the guide block is rotationally connected with a guide shaft outside, the valve body inner wall is fixedly connected with a positioning plate, the positioning plate is internally provided with a guide groove, and the guide groove is a curved groove with a rotation radian and is communicated with two groups of mutually parallel straight guide grooves.

[0011] Further, the guide block is rotationally connected with a guide shaft outside, the valve body inner wall is fixedly connected with a positioning plate, the positioning plate is internally provided with a guide groove, and the guide groove is a curved groove with a rotation radian and is communicated with two groups of mutually parallel straight guide grooves.

[0012] By adopting the above technical scheme, when the sealing door is opened, the sealing door is turned to a horizontal position, a closing command of an actuator is received, the linkage arm turns the sealing door to a vertical position through a circular arc motion, the secondary connecting rod continues to push the sealing door to move horizontally until the sealing door is completely attached to the sealing gasket on the box body, a compression force is continuously provided, and the sealing door and the box body are completely sealed.

[0013] Further, the sealing door plate is fixedly connected with a sealing rubber strip on one side close to the sealing valve cavity, and the sealing rubber strip is matched with the sealing valve cavity in shape and size.

[0014] By adopting the above technical scheme, the low-hardness foamed silica gel material is adopted, and the material has super high corrosion resistance and anti-aging characteristics; meanwhile, the fixed position of the sealing gasket is on the box body frame, so that abrasion caused by the turning motion of the sealing door is avoided.

[0015] In summary, the beneficial technical effects of the utility model are as follows:

[0016] 1. The transmission structure is adopted as the power mechanism for opening and closing the sealing door, specifically, two connecting rods are connected with the transmission shaft, the sealing door is assembled on the sliding block, the sliding block completes the opening and closing process under the motion of the linkage arm along the track, the valve can realize the quick opening and closing motion process, the motion process has low resistance, the sealing plate is uniformly stressed, the parts run stably, and maintenance is not needed.

[0017] 2. When the sealing door is opened, the sealing door is turned to a horizontal position, a closing command of an actuator is received, the linkage arm turns the sealing door to a vertical position through a circular arc motion, the secondary connecting rod continues to push the sealing door to move horizontally until the sealing door is completely attached to the sealing gasket on the box body, a compression force is continuously provided, and the sealing door and the box body are completely sealed, so that the effect of sufficient sealing is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and do not constitute a limitation to the utility model. In the drawings:

[0019] Figure 1 It is a utility three-dimensional structure diagram.

[0020] Figure 2 is the bottom structure diagram of the utility model;

[0021] Figure 3 is the three-dimensional structure diagram of the transmission mechanism of the utility model;

[0022] Figure 4 is the bottom structure diagram of the transmission mechanism of the utility model.

[0023] In the figure, 1, valve body;2, drive motor;3, drive shaft;4, closed valve cavity;5, sealing door plate;6, transmission mechanism;11, positioning plate;12, guide groove;41, sealing rubber strip;61, first transmission shaft;62, second transmission shaft;63, guide block;64, guide shaft;65, positioning slide;66, ball slide. DETAILED DESCRIPTION

[0024] The utility model will be further described in detail below in combination with the drawings.

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not 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 the utility model.

[0026] Please refer to Figures 1-4 The utility model provides technical scheme: a closed valve with transmission structure, including valve body 1, valve body 1 one end fixedly connected with the drive motor 2 for driving, drive motor 2 output end passes through valve body 1 outside and extends to valve body 1 inside, drive motor 2 is fixedly connected with drive shaft 3, and valve body 1 one side is set up with the closed valve cavity 4 for the air circulation, and drive shaft 3 outside is movably connected with the sealing door plate 5 for closing closed valve cavity 4, and drive shaft 3 and sealing door plate 5 between set up transmission mechanism 6 for transmission control, and sealing door plate 5 can and closed valve cavity 4 fully adhere to seal, to guarantee the whole good sealing effect.

[0027] Refer to Figure 3, the transmission mechanism 6 inside includes the first transmission shaft 61, the first transmission shaft 61 is rotatably connected with the drive shaft 3, the first transmission shaft 61 upper end rotatably connected with the second transmission shaft 62, the second transmission shaft 62 outside rotatably connected with the guide block 63, the guide block 63 upper end and sealing door plate 5 fixedly connected, the second transmission shaft 62 and the first transmission shaft 61 through the circular shaft rotatably connected, and the second transmission shaft 62 and the first transmission shaft 61 normal state is V-shaped structure, the guide block 63 outside rotatably connected with the guide shaft 64, the valve body 1 inner wall fixedly connected with the positioning plate 11, the positioning plate 11 inside is provided with guide groove 12, the guide groove 12 is the structure that two groups of parallel linear guide grooves are communicated with the curved groove with rotation radian, the guide shaft 64 in the guide groove 12 inside the process of moving will not produce deviation, and ensure that the guide shaft 64 moves along the guide groove 12.

[0028] With reference to Figure 4 , the side of the guide block 63 close to the positioning plate 11 rotatably connected with the ball slide 66, the ball slide 66 is located outside the guide shaft 64, the positioning plate 11 close to the ball slide 66 one side fixedly connected with the positioning slide 65 that is matched with ball slide 66, the positioning slide 65 and ball slide 66 slidingly connected, the ball slide 66 moves outside the positioning slide 65, so as to ensure the overall good adjustment effect, and provides displacement for the rotation of the guide block 63, ensure normal operation.

[0029] With reference to Figure 2 , the side of the sealing door plate 5 close to the closed valve cavity 4 fixedly connected with sealing rubber strip 41, the sealing rubber strip 41 and the shape and size of the closed valve cavity 4 are matched, the sealing rubber strip 41 adopts imported "foamed silica gel" material sealing gasket, the gasket has super low "20 hardness value", nearly 80% lower than the existing valve gasket hardness value, has super high corrosion resistance and anti-aging characteristics.

[0030] Working principle: first drive motor 2 drive shaft 3 rotation, and drive shaft 3 rotation in the process of driving the first transmission shaft 61 and the second transmission shaft 62 transmission, transmission process, the first transmission shaft 61 rotation pull second transmission shaft 62 and the guide block 63 angle change, when the second transmission shaft 62 and the guide block 63 angle change, the guide shaft 64 in the guide groove 12 inside the movement, namely in the linear guide groove 12 inside the movement, the process of movement guide block 63 angle does not produce greater change, namely the ball slider 66 along the positioning slide bar 65 long distance movement, drive sealing door plate 5 transverse displacement, when the guide shaft 64 moves to the guide groove 12 rotation radian curve type groove, the guide block 63 angle change, namely the ball slider 66 along the positioning slide bar 65 smaller position compensation movement, guide block 63 rotation to nearly vertical, drive sealing door plate 5 rotation to the horizontal state, specifically transmission shaft linkage two connecting rods, sealed door assembly on the slide block, slide block along the track in the linkage arm under the movement of the process of opening and closing, the valve can realize the quick opening and closing movement process.

[0031] It should be noted that in this document, the terms "first" and "second" and the like are used merely as identifiers to distinguish between two entities or operations from each other, and are not necessarily required or implied to be in any such actual relationship or order. Also, the terms "comprise", "comprising", or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements recited, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A closed valve with a belt drive structure, comprising a valve body (1), characterized in that: The valve body (1) one end fixedly connected with the drive motor (2) for driving, the drive motor (2) output side through the valve body (1) outside extends to the valve body (1) inside, the drive motor (2) fixedly connected with drive shaft (3), the valve body (1) one side is provided with the airtight valve cavity (4) for the air circulation, the drive shaft (3) outside movably connected with the sealing door plate (5) for closing airtight valve cavity (4), the drive shaft (3) and sealing door plate (5) between be provided with for transmission control transmission mechanism (6).

2. A hermetic valve with a belt drive structure according to claim 1, characterized in that: The transmission mechanism (6) inside includes first transmission shaft (61), the first transmission shaft (61) is rotatably connected with drive shaft (3), the first transmission shaft (61) upper end rotatably connected with second transmission shaft (62), the second transmission shaft (62) outside rotatably connected with guide block (63), the guide block (63) upper end and sealing door plate (5) fixedly connected.

3. A hermetic valve with a belt drive according to claim 2, characterized in that: The guide block (63) outside rotatably connected with guide shaft (64), the valve body (1) inner wall fixedly connected with positioning plate (11), the positioning plate (11) inside is provided with guide groove (12), the guide groove (12) is the structure of two groups of parallel straight guide grooves with the rotation arc type groove communication.

4. The enclosed valve with a belt drive structure according to claim 3, characterized in that: The guide block (63) is rotatably connected with the ball slide (66) on the side close to the positioning plate (11), the ball slide (66) is located outside the guide shaft (64), the positioning plate (11) is fixedly connected with the positioning slide (65) matched with the ball slide (66) on the side close to the ball slide (66), the positioning slide (65) is slidably connected with the ball slide (66).

5. The enclosed valve with a belt drive structure according to claim 1, characterized in that: The sealing door plate (5) is fixedly connected with the sealing rubber strip (41) on the side close to the airtight valve cavity (4), and the sealing rubber strip (41) is matched with the shape and size of the airtight valve cavity (4).

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