Closed glasses valve opening indicating mechanism

Abstract

The utility model relates to the technical field of glasses valves, in particular to a closed glasses valve opening indicating mechanism which comprises a fixed shell, a synchronous gear, a reduction gear, a driving gear and an indicating rack, and the synchronous gear, the reduction gear, the driving gear and the indicating rack are arranged in the fixed shell. The synchromesh gear and the glasses valve opening degree driving shaft are coaxially arranged and relatively fixed, a synchromesh shaft is rotationally arranged on the fixed shell, the reduction gear and the synchromesh shaft are coaxially arranged, and the upper end of the reduction gear is meshed with the lower end of the synchromesh gear; the driving gear is coaxially and fixedly arranged on the synchronizing shaft, and the indicating rack is arranged in the fixed shell in a sliding mode in the vertical direction. By arranging the synchronous gear and the reduction gear which are meshed with each other, the small rotation angle of the glasses valve opening degree driving shaft is converted into the large rotation angle of the synchronous shaft, then rotation is converted into movement of the indication rack, scales on the indication rack are read through the opening, and the opening degree of the glasses valve is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of glasses valves, and more specifically to a closed glasses valve opening indicating mechanism. Background Art

[0002] Traditional closed glasses valves are usually closed as a whole to prevent foreign matter from entering the pipeline system during use. There is a problem that the valve switch status cannot be intuitively judged and needs to be confirmed by other auxiliary equipment or personal experience. Therefore, a mechanism with an indication function and capable of closing glasses valves is needed. Utility Model Content

[0003] In order to overcome the deficiencies in the prior art, a closed glasses valve opening indicating mechanism is provided.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A closed glasses valve opening indicating mechanism, comprising a fixed housing and a synchronous gear, a reduction gear, a driving gear and an indicating rack arranged inside the fixed housing, wherein the fixed housing is arranged in a direction perpendicular to the axis of the glasses valve opening driving shaft, the fixed housing is sealed and connected to the glasses valve, the synchronous gear is coaxially arranged and relatively fixed with the glasses valve opening driving shaft, a synchronous shaft is rotatably arranged on the fixed housing, the reduction gear is coaxially arranged and fixedly connected with the synchronous shaft, and the upper end of the reduction gear is meshed with the lower end of the synchronous gear;

[0006] The driving gear is coaxially fixed on the synchronization shaft, the indicating rack is slidably arranged inside the fixed shell along the vertical direction, the indicating rack is meshed with the driving gear, the indicating rack is provided with a scale, and an opening matching the scale on the indicating rack is provided on the side of the fixed shell away from the glasses valve.

[0007] Preferably, the number of teeth of the synchronous gear is greater than the number of teeth of the reduction gear, and the number of teeth of the driving gear is greater than the number of teeth of the synchronous gear.

[0008] Preferably, the indicating rack includes a rack I and a rack II, a slide groove is provided on the fixed shell, the side of the rack I away from the teeth is slidably set in the slide groove, the rack II is slidably set on the rack I, and the teeth of the rack II and the rack I are set on the same straight line.

[0009] Preferably, a spring is provided between the rack I and the rack II to keep the rack I and the rack II away from each other.

[0010] Preferably, a threaded rod is threadedly connected to one end of the glasses valve opening drive shaft close to the fixed shell, and the threaded rod and the glasses valve opening drive shaft are locked by a locking nut, and the synchronous gear is threadedly connected to the threaded rod, and the synchronous gear and the threaded rod are locked by a set screw.

[0011] Preferably, a window glass is provided on the opening, and the window glass is fixed on the fixed shell through a window pressure plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model converts a smaller rotation angle of the glasses valve opening drive shaft into a larger rotation angle of the synchronization shaft by setting mutually meshing synchronization gears and reduction gears, and then converts the rotation into the movement of the indication rack by meshing the driving gear on the synchronization shaft with the indication rack, and uses the opening to read the scale on the indication rack to obtain the opening of the glasses valve.

[0014] 2. The indicating rack of the utility model adopts a telescopic structure, which can limit and reduce the volume of the fixed shell, thereby reducing the volume of the entire glasses valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the installation of the utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the indicator rack.

[0019] In the figure: 1-fixed housing, 1.1-slideway, 2-synchronous gear, 3-reduction gear, 4-driving gear, 5-indicating rack, 5.1-rack I, 5.2-rack II, 6-eyeglass valve opening driving shaft, 7-synchronous shaft, 8-opening, 9-spring, 10-threaded rod, 11-locking nut, 12-setting screw. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1 to 3 As shown, a closed glasses valve opening indicating mechanism comprises a fixed housing 1 and a synchronous gear 2, a reduction gear 3, a driving gear 4 and an indicating rack 5 arranged inside the fixed housing 1. The fixed housing 1 is fixedly arranged on one side of the glasses valve, and the end face of the fixed housing 1 is arranged in a direction perpendicular to the axis of the glasses valve opening driving shaft 6. The fixed housing 1 is sealed and connected to the glasses valve to prevent foreign matter from entering the pipeline system. A threaded rod 10 is threadedly connected to one end of the glasses valve opening driving shaft 6 close to the fixed housing 1, and the threaded rod 10 is locked with the glasses valve opening driving shaft 6 by a locking nut 11. One end of the threaded rod 10 extends into the fixed housing 1, and the synchronous gear 2 is threadedly connected to the threaded rod 10. The synchronous gear 2 and the threaded rod 10 are locked by a set screw 12. The synchronous gear 2 is coaxially arranged with the glasses valve opening driving shaft 6.

[0022] A synchronous shaft 7 is rotatably arranged on the fixed housing 1, the reduction gear 3 is coaxially arranged and fixedly connected with the synchronous shaft 7, the upper end of the reduction gear 3 is meshed with the lower end of the synchronous gear 2, and the driving gear 4 is coaxially fixedly arranged on the synchronous shaft 7. When the eyeglass valve opening driving shaft 6 rotates, the threaded rod 10 and the synchronous gear 2 thereon are driven to rotate, and then the driving gear 4 is driven to rotate through the reduction gear 3 and the synchronous shaft 7. The number of teeth of the synchronous gear 2 is greater than the number of teeth of the reduction gear 3. Preferably, the number of teeth of the driving gear 4 is greater than the number of teeth of the synchronous gear 2. The rotation angle is amplified by the synchronous gear 2, the reduction gear 3, and the driving gear 4.

[0023] The indicating rack 5 comprises a rack I5.1 and a rack II5.2. A slide groove 1.1 is arranged on the fixed housing 1. The side of the rack I5.1 away from the teeth is slidably arranged in the slide groove 1.1. The rack II5.2 is slidably arranged on the rack I5.1. The teeth of the rack II5.2 and the rack I5.1 are arranged on the same straight line. A spring 9 is arranged between the rack I5.1 and the rack II5.2 to keep the rack I5.1 and the rack II5.2 away from each other.

[0024] When the glasses valve is closed, the indicator rack 5 retracts, most of the rack II5.2 is in the rack I5.1, and the driving gear 4 is meshed with the rack II5.2; when the glasses valve is opened, the driving gear 4 drives the rack II5.2 to move upward, and when the rack II5.2 reaches the maximum stroke, it pulls the rack I5.1 to mesh with the driving gear 4, and when the upper end of the rack II5.2 contacts the upper end of the fixed shell 1, the rack II5.2 gradually retracts into the rack I5.1.

[0025] Scales are arranged on the rack I 5 . 1 and the rack II 5 . 2 . An opening 8 matching the scales on the indicating rack 5 is arranged on the side of the fixed housing 1 away from the glasses valve, and the current scale can be read through the opening 8 .

[0026] Preferably, a window glass is provided on the opening 8, and the window glass is fixed on the fixed housing 1 through a window pressing plate 13, so as to facilitate sealing of the fixed housing 1.

[0027] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A closed glasses valve opening indicating mechanism, characterized in that: The invention comprises a fixed housing (1) and a synchronous gear (2), a reduction gear (3), a driving gear (4) and an indicating rack (5) arranged inside the fixed housing (1); the fixed housing (1) is arranged in a direction perpendicular to the axis of a glasses valve opening driving shaft (6); the fixed housing (1) is sealedly connected to the glasses valve; the synchronous gear (2) and the glasses valve opening driving shaft (6) are coaxially arranged and relatively fixed; a synchronous shaft (7) is rotatably arranged on the fixed housing (1); the reduction gear (3) and the synchronous shaft (7) are coaxially arranged and fixedly connected; the upper end of the reduction gear (3) is meshed with the lower end of the synchronous gear (2); The driving gear (4) is coaxially fixedly arranged on the synchronization shaft (7), the indicating rack (5) is slidably arranged in the vertical direction inside the fixed housing (1), the indicating rack (5) is meshed with the driving gear (4), a scale is arranged on the indicating rack (5), and an opening (8) matching the scale on the indicating rack (5) is arranged on a side of the fixed housing (1) away from the glasses valve.

2. A closed type glasses valve opening indicating mechanism according to claim 1, characterized in that: The number of teeth of the synchronous gear (2) is greater than the number of teeth of the reduction gear (3), and the number of teeth of the driving gear (4) is greater than the number of teeth of the synchronous gear (2).

3. The closed type eyeglass valve opening indicating mechanism according to claim 1, characterized in that: The indicating rack (5) comprises a rack I (5.1) and a rack II (5.2), the fixed housing (1) is provided with a slide groove (1.1), the side of the rack I (5.1) away from the teeth is slidably arranged in the slide groove (1.1), the rack II (5.2) is slidably arranged on the rack I (5.1), and the teeth of the rack II (5.2) and the rack I (5.1) are arranged on the same straight line.

4. A closed type glasses valve opening indicating mechanism according to claim 3, characterized in that: A spring (9) is provided between the rack I (5.1) and the rack II (5.2) to keep the rack I (5.1) and the rack II (5.2) away from each other.

5. The closed type eyeglass valve opening indicating mechanism according to claim 1, characterized in that: A threaded rod (10) is threadedly connected to one end of the glasses valve opening drive shaft (6) close to the fixed housing (1); the threaded rod (10) and the glasses valve opening drive shaft (6) are locked by a locking nut (11); the synchronous gear (2) is threadedly connected to the threaded rod (10); the synchronous gear (2) and the threaded rod (10) are locked by a set screw (12).

6. The closed type eyeglass valve opening indicating mechanism according to claim 1, characterized in that: A window glass is arranged on the opening (8), and the window glass is fixedly arranged on the fixed housing (1) via a window pressing plate (13).

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