Double-layer composite sealing butterfly valve

Abstract

The utility model discloses a double -deck composite sealing butterfly valve relates to valve technical field. The double -deck composite sealing butterfly valve includes butterfly valve main part, is equipped with the first valve seat and second valve seat on butterfly valve main part, and the inside of first valve seat and second valve seat all is equipped with the valve core and valve rod, and the valve rod of first valve seat and second valve seat is fixedly connected with first gear and second gear respectively, and the transmission gear is rotatably connected on butterfly valve main part. The double -deck composite sealing butterfly valve passes through the design of first valve seat and second valve seat, and then cooperates the setting of transmission gear, first gear and second gear, makes the valve rod of first valve seat and second valve seat linkage, therefore, the butterfly valve main part is convenient to form stable double -deck composite sealing state, guarantees the internal passage sealing performance of double -deck composite sealing, needs to open the passage of butterfly valve main part, can synchronous control one valve seat and second valve seat passage open, and convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely is a double -layer composite sealing butterfly valve. BACKGROUND

[0002] Butterfly valve is a kind of valve, and the closing piece is disc, rotates around valve shaft to reach opening and closing. In the cylindrical passage of butterfly valve body, disc-shaped butterfly plate rotates around axis, and the rotation angle is between 0 ° and 90 °, and when rotating to 90 °, the valve is in full open state. The opening and closing part of butterfly valve is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjusting.

[0003] In the prior art, the butterfly valve usually only has a single valve core state, when the valve core is damaged, the leakage is easy to occur at the opening and closing position of the whole butterfly valve, it is not stable enough, causes loss, when important materials are transported in enterprises, it is necessary to ensure that the butterfly valve is stable and does not appear leakage, and the traditional butterfly valve is difficult to meet the use requirement, if two groups of butterfly valves are directly added on the pipeline, it will cause inconvenience in operation, and the opening and closing of the two groups of butterfly valves needs to be manually controlled every time, which is time-consuming and laborious, and the utility model provides a double-layer composite sealing butterfly valve to solve the above problems. UTILITY MODEL CONTENT

[0004] In view of the defects of the prior art, the utility model provides a double-layer composite sealing butterfly valve, through the design of first valve seat and second valve seat, and the setting of transmission gear, first gear and second gear, the valve rods of first valve seat and second valve seat are linked, so that the butterfly valve body is convenient to form stable double-layer composite sealing state, the internal passage sealing performance of double-layer composite sealing is guaranteed, when the passage of butterfly valve body needs to be opened, the first valve seat and second valve seat passages can be synchronously controlled to open, and the use is convenient.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a double-layer composite sealing butterfly valve, comprising a butterfly valve body, a first valve seat and a second valve seat are arranged on the butterfly valve body, and valve cores and valve rods are arranged in the first valve seat and the second valve seat.

[0006] First gear and second gear are fixedly connected to the valve rods of the first valve seat and the second valve seat respectively, transmission gear is rotatably connected to the butterfly valve body, and the transmission gear is engaged with the first gear and the second gear.

[0007] A lubricating unit for providing lubrication for the transmission gear is arranged on the butterfly valve body, the lubricating unit comprises a lubricating box arranged on the butterfly valve body and a lubricating nozzle arranged on the lubricating box, and the lubricating nozzle is rotatably connected with a lubricating wheel matched with the transmission gear.

[0008] Preferably, the lubricating unit further comprises a base fixedly connected to the butterfly valve body and a guide rail base fixedly connected to the base, the guide rail base being used for supporting the lubricating box.

[0009] Preferably, the guide rail base is provided with a pressing mechanism used for applying an elastic force to the lubricating box, the pressing mechanism comprising a baffle arranged on the guide rail base and a spring fixedly connected to the baffle, the lubricating box being slidingly connected to the guide rail base.

[0010] Preferably, the bottom of the lubricating box is provided with a sliding block fixed to the spring, and the guide rail base is provided with a sliding groove, the sliding block being slidingly connected to the sliding groove.

[0011] Preferably, the lubricating box is provided with a screw cap, and the lubricating nozzle is provided with an oil discharge groove.

[0012] Preferably, the valve rod of the first valve seat is provided with a control handle.

[0013] The utility model discloses a double -layer composite sealing butterfly valve has the beneficial effect as follows:

[0014] 1, this double -layer composite sealing butterfly valve, through the design of first valve seat and second valve seat, cooperate the setting of transmission gear, first gear and second gear again, make first valve seat and second valve seat's valve rod linkage, therefore butterfly valve body is convenient to form stable double -layer composite sealing state, guarantee the internal passage sealing performance of double -layer composite sealing, need open the passage of butterfly valve body, can synchronous control first valve seat and second valve seat passage open, convenient to use.

[0015] 2, this double -layer composite sealing butterfly valve, cooperate the design of lubricating unit, make transmission gear automatic lubrication at the junction of first gear and second gear, thereby guarantee first valve seat and second valve seat's internal passage control smooth, small resistance, stable in the use process. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the front view of the utility model;

[0019] Figure 3The utility model discloses a lubricating unit's structure schematic drawing.

[0020] Figure 4 The utility model discloses a structure schematic drawing of the abutting mechanism.

[0021] In the drawing: 1, butterfly valve main body;2, first valve seat;21, first gear;22, control handle;3, second valve seat;31, second gear;4, transmission gear;5, lubricating unit;51, base;52, guide rail seat;53, lubricating box;531, screw cap;54, lubricating mouth;541, oil discharge groove;55, lubricating wheel;6, abutting mechanism;61, sliding groove;62, sliding block;63, baffle;64, spring. Specific implementation

[0022] In order to make the utility model embodiment's purpose, technical scheme and advantage more clearly, the technical scheme in the utility model embodiment is clearly and completely described, obviously, the described embodiment is a part embodiment of the utility model, instead of all embodiments. Based on the embodiment in the utility model, all other embodiments that the person skilled in the art obtains without making creative labor belong to the range of the utility model protection.

[0023] The embodiment of the application provides a double-layer composite sealing butterfly valve, which solves the problem that the prior art butterfly valve usually only has a single valve core state, when the valve core is damaged, leakage is prone to occur at the opening and closing positions of the whole butterfly valve, the stability is not enough, losses are caused, when important materials are transported in enterprises, the butterfly valve needs to be stable and cannot leak, and the traditional butterfly valve cannot meet the use requirement.

[0024] In order to better understand the above technical scheme, the above technical scheme will be described in detail in combination with the drawings of the specification and specific implementation.

[0025] The utility model embodiment discloses a double-layer composite sealing butterfly valve, according to the attached Figures 1-4 As shown in the figure, including butterfly valve main body 1, be equipped with first valve seat 2 and second valve seat 3 on butterfly valve main body 1, the inside of first valve seat 2 and second valve seat 3 is equipped with valve core and valve rod;

[0026] The valve rod of first valve seat 2 is equipped with control handle 22, and the device is designed to make the valve rod of first valve seat 2 convenient for rotating

[0027] The valve rod of first valve seat 2 and second valve seat 3 is fixedly connected with first gear 21 and second gear 31 respectively, transmission gear 4 is rotatably connected on butterfly valve main body 1, and transmission gear 4 is engaged with first gear 21 and second gear 31 respectively.

[0028] The double-layer composite sealing butterfly valve, through the design of the first valve seat 2 and the second valve seat 3, in combination with the setting of the transmission gear 4, the first gear 21 and the second gear 31, the valve rods of the first valve seat 2 and the second valve seat 3 are linked, so that the butterfly valve body 1 is convenient to form a stable double-layer composite sealing state, and the sealing performance of the internal passage of the double-layer composite sealing is good, when the passage of the butterfly valve body 1 needs to be opened, the first valve seat 2 and the second valve seat 3 can be opened synchronously, and the use is convenient.

[0029] When the valve rod of the first valve seat 2 rotates, the first gear 21 is driven to rotate, the transmission gear 4 is driven to rotate by the first gear 21, the second gear 31 is driven to rotate by the transmission gear 4, and the valve rod of the second valve seat 3 is driven to rotate by the second gear 31, so that the valve rods of the first valve seat 2 and the second valve seat 3 are linked, and the opening and closing of the internal passages of the first valve seat 2 and the second valve seat 3 are synchronized.

[0030] The butterfly valve body 1 is provided with a lubricating unit 5 for providing lubrication for the transmission gear 4, the lubricating unit 5 comprises a lubricating box 53 arranged on the butterfly valve body 1 and a lubricating nozzle 54 arranged on the lubricating box 53, and the lubricating nozzle 54 is rotatably connected with a lubricating wheel 55 abutting against the transmission gear 4.

[0031] The device cooperates with the design of the lubricating unit 5, so that the transmission gear 4 is automatically lubricated at the connection position of the first gear 21 and the second gear 31, thereby ensuring that the internal passage control of the first valve seat 2 and the second valve seat 3 is smooth, the resistance is small, and the use process is stable.

[0032] The structure of the lubricating unit 5 is simple, the lubricating wheel 55 is abutted against the transmission gear 4, when the first gear 21 rotates to drive the transmission gear 4 and the second gear 31 to rotate, the transmission gear 4 synchronously drives the lubricating wheel 55 to rotate, the lubricating wheel 55 automatically absorbs the lubricating oil in the lubricating nozzle 54 when rotating, the lubricating box 53 is used for storing lubricating oil, so that the lubricating oil is transmitted to the transmission gear 4, and then transmitted to the connection position of the first gear 21 and the second gear 31 by the transmission gear 4, thereby ensuring that the connection position has small resistance.

[0033] The lubricating unit 5 further comprises a base 51 fixedly connected to the butterfly valve body 1 and a guide rail seat 52 fixedly connected to the base 51, and the guide rail seat 52 is used for supporting the lubricating box 53, and the device is supported at the bottom of the lubricating box 53 through the design of the base 51 and the guide rail seat 52.

[0034] The guide rail base 52 is provided with a pressing mechanism 6 for applying elastic force to the lubricating box 53, the pressing mechanism 6 comprises a baffle 63 arranged on the guide rail base 52 and a spring 64 fixedly connected to the baffle 63, the lubricating box 53 is slidingly connected to the guide rail base 52, the bottom of the lubricating box 53 is provided with a sliding block 62, the sliding block 62 is fixed to the spring 64, and the guide rail base 52 is provided with a sliding groove 61, and the sliding block 62 is slidingly connected in the sliding groove 61;

[0035] The device provides the pressing mechanism 6, the pressing mechanism 6 is used for applying the thrust force to the lubricating box 53, so that the lubricating box 53 drives the lubricating nozzle 54 to move, the lubricating nozzle 54 drives the lubricating wheel 55 to move and makes the lubricating wheel 55 keep the state of close contact with the transmission gear 4, thereby improving the lubricating effect;

[0036] The pressing mechanism 6 is simple in structure, the spring 64 provides the elastic force, the spring 64 applies the elastic force to the sliding block 62, the sliding block 62 drives the lubricating box 53 to move, and the lubricating box 53 drives the lubricating nozzle 54 and the lubricating wheel 55 to move;

[0037] The lubricating box 53 is provided with a screw cap 531, the inside of the lubricating nozzle 54 is provided with an oil discharge groove 541, the device is designed through the screw cap 531, so that the lubricating oil in the lubricating box 53 is convenient to add, and the oil discharge groove 541 makes the oil in the lubricating nozzle 54 convenient to apply to the lubricating wheel 55.

[0038] The basic principle and main features and advantages of the device are shown and described above. It should be understood by those skilled in the art that the device is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the device, and various changes and improvements can be made to the device without departing from the spirit and scope of the device, and these changes and improvements all fall within the scope of the claimed device. The scope of protection of the device is defined by the appended claims and their equivalents.

Claims

1. A double-layer composite-seal butterfly valve comprising a butterfly valve body (1), characterized in that, The butterfly valve body (1) is provided with a first valve seat (2) and a second valve seat (3), the interiors of the first valve seat (2) and the second valve seat (3) are provided with a valve core and a valve rod; The valve rods of the first valve seat (2) and the second valve seat (3) are respectively fixedly connected with a first gear (21) and a second gear (31), the butterfly valve body (1) is rotatably connected with a transmission gear (4), the transmission gear (4) is meshed with the first gear (21) and the second gear (31); The butterfly valve body (1) is provided with a lubricating unit (5) for providing lubrication for the transmission gear (4), the lubricating unit (5) comprises a lubricating box (53) arranged on the butterfly valve body (1) and a lubricating nozzle (54) arranged on the lubricating box (53), the lubricating nozzle (54) is rotatably connected with a lubricating wheel (55) abutting against the transmission gear (4).

2. A double-layered composite-seal butterfly valve according to claim 1, characterized in that, The lubricating unit (5) further comprises a base (51) fixedly connected to the butterfly valve body (1) and a guide rail seat (52) fixedly connected to the base (51), the guide rail seat (52) is used for supporting the lubricating box (53).

3. A double door butterfly valve according to claim 2, wherein The guide rail seat (52) is provided with a pressing mechanism (6) for applying an elastic force to the lubricating box (53), the pressing mechanism (6) comprises a baffle (63) arranged on the guide rail seat (52) and a spring (64) fixedly connected to the baffle (63), the lubricating box (53) is slidably connected to the guide rail seat (52).

4. A double door butterfly valve according to claim 3, wherein The bottom of the lubricating box (53) is provided with a sliding block (62), the sliding block (62) is fixed with the spring (64), the guide rail seat (52) is provided with a sliding groove (61), and the sliding block (62) is slidably connected in the sliding groove (61).

5. A double door butterfly valve according to claim 4, wherein The lubricating box (53) is provided with a screw cap (531), and the interior of the lubricating nozzle (54) is provided with an oil discharge groove (541).

6. A double door butterfly valve according to claim 1, wherein The valve rod of the first valve seat (2) is provided with a control handle (22).

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