Butterfly valve capable of preventing mistaken touch

Abstract

The utility model relates to the technical field of valves, and discloses a mistaken touch prevention butterfly valve which comprises a valve body, a valve seat fixedly installed at the upper end of the valve body, an end seat fixedly installed at the upper end of the valve seat, a plurality of limiting grooves formed in the outer side of the end seat, a butterfly plate movably installed in the valve body, and a rotating shaft fixedly installed in the middle of the butterfly plate. The upper end of the rotating shaft sequentially penetrates through the valve seat and the end seat and is fixedly provided with a fixed handle, the lower end of the fixed handle is in shaft connection with a limiting handle, and a limiting block is fixedly installed on the side, opposite to the end seat, of the limiting handle and clamped in the corresponding limiting groove. The rotatable mistaken touch prevention wheel is arranged at one end of the fixed handle, the two displacement through grooves are formed in the inner side of the mistaken touch prevention wheel, and the medium balancing weight is matched, so that the mistaken touch prevention wheel located between the two displacement through grooves is always located above the limiting handle under the normalized condition, and the mistaken touch prevention effect on the limiting handle is achieved; the use stability of the whole valve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, especially a kind of anti-misoperation butterfly valve. BACKGROUND

[0002] Butterfly valve, also known as flap valve or butterfly valve, is a simple structure regulating valve, widely used in chemical industry, petroleum, natural gas, food, pharmaceutical, metallurgy, water treatment and other industries pipeline system;

[0003] The main components of butterfly valve include valve body, valve stem and butterfly plate, butterfly valve is rotated around its axis by disc-shaped butterfly plate in valve body, to realize the function of opening, closing or regulating medium flow, after rotating butterfly plate by operating handle, generally, a press handle with limit block is also provided at the lower end of operating handle, so that the limit block at one end of press handle can be clamped into the corresponding limit slot on valve seat, to realize the limit of operating handle, and then realize the limit of axial movement of valve stem, but although press handle with limit block is provided at the lower end of operating handle, and is clamped into the limit slot on valve seat to realize the limit, due to the complex operating site environment, other equipment or objects may accidentally collide with press handle, causing its accidental movement, at the same time, the operator may not be familiar with the equipment layout, and may accidentally touch press handle during operation. SUMMARY

[0004] The utility model aims at providing a kind of anti-misoperation butterfly valve, can effectively solve the problems in the background art.

[0005] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0006] An anti-misoperation butterfly valve, comprising a valve body, a valve seat is fixedly installed on the upper end of the valve body, an end seat is fixedly installed on the upper end of the valve seat, a plurality of limit slots are formed on the outer side of the end seat, a butterfly plate is movably installed in the valve body, a rotating shaft is fixedly installed in the middle of the butterfly plate, and a fixed handle is fixedly installed on the upper end of the rotating shaft, which passes through the valve seat and the end seat in sequence, a limit handle is connected to the lower end of the fixed handle, a limit block is fixedly installed on one side of the limit handle relative to the end seat, the limit block is clamped in the corresponding limit slot, a compression spring is connected between the upper end of the limit handle and the fixed handle, an anti-misoperation wheel is movably installed on one end of the fixed handle away from the end seat, and two displacement grooves are formed on the inner side of the anti-misoperation wheel.

[0007] As a further preferred embodiment of the utility model, an installation hole is formed on one end of the fixed handle, and two positioning grooves are formed on the installation hole side of one end of the fixed handle.

[0008] As a further preferred scheme of the present utility model, the installation hole is inserted with a pin shaft, one end of the pin shaft is fixedly installed with a fixed block, and the fixed block is located in the fixed handle, and after the pin shaft is inserted in the installation hole, conditions are provided for the rotation installation of the wheel.

[0009] As a further preferred scheme of the present utility model, the anti-mis-touch wheel is fixedly installed with a horizontal shaft tube in the middle, the shaft tube is rotationally installed on the pin shaft at one end of the fixed handle, and one end of the pin shaft extends through the shaft tube to one end of the anti-mis-touch wheel and is clamped with a clamping spring.

[0010] As a further preferred scheme of the present utility model, the two displacement grooves are obliquely forty-five degrees from the shaft tube as the center, the anti-mis-touch wheel between the two displacement grooves is further fixedly installed with a counterweight, the front side of the counterweight is fixedly installed with a positioning protrusion, through the setting of the anti-mis-touch wheel, the pressing operation of the limiting handle can be limited under the condition of no external rotation of the anti-mis-touch wheel, and when the displacement groove rotates to the position above the limiting handle, the pressing operation of the limiting handle can be realized.

[0011] Compared with the prior art, the present utility model has the following beneficial effects:

[0012] In the present utility model, the rotatable anti-mis-touch wheel is arranged at one end of the fixed handle, two displacement grooves are arranged in the inner side of the anti-mis-touch wheel, and the cooperation of the medium counterweight makes the anti-mis-touch wheel between the two displacement grooves always located above the limiting handle in the normal state, thereby playing the role of preventing the anti-mis-touch of the limiting handle and improving the stability of the whole valve. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the main structure schematic view of the present utility model;

[0014] Figure 2 It is the limiting handle sectional view of the present utility model;

[0015] Figure 3 It is the fixed handle structure schematic view of the present utility model;

[0016] Figure 4 It is the anti-mis-touch wheel structure schematic view of the present utility model.

[0017] In the drawing: 1, valve body; 2, valve seat; 3, end seat; 4, limiting groove; 5, butterfly plate; 6, rotating shaft; 7, fixed handle; 8, limiting handle; 9, limiting block; 10, compression spring; 11, anti-mis-touch wheel; 12, displacement groove; 13, installation hole; 14, pin shaft; 15, fixed block; 16, positioning groove; 17, shaft tube; 18, counterweight; 19, positioning protrusion. PREFERRED EMBODIMENT

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figures 1-4 As shown, the present invention provides an anti-accidental contact butterfly valve, comprising a valve body 1, a valve seat 2 fixedly installed on the upper end of the valve body 1, an end seat 3 fixedly installed on the upper end of the valve seat 2, a plurality of limiting grooves 4 opened on the outer side of the end seat 3, a butterfly plate 5 movably installed inside the valve body 1, a rotating shaft 6 fixedly installed in the middle of the butterfly plate 5, and the upper end of the rotating shaft 6 passing through the valve seat 2 and the end seat 3 in sequence and fixedly installed with a fixed handle 7, a limiting handle 8 axially connected to the lower end of the fixed handle 7, a limiting block 9 fixedly installed on the side of the limiting handle 8 opposite to the end seat 3, the limiting block 9 being snapped into the corresponding limiting groove 4, a compression spring 10 being inserted between the upper end of the limiting handle 8 and the fixed handle 7, and an anti-accidental contact wheel 11 movably installed on the end of the fixed handle 7 away from the end seat 3, with two displacement through grooves 12 opened on the inner side of the anti-accidental contact wheel 11.

[0020] like Figures 2-3 As shown, a mounting hole 13 is provided at one end of the fixed handle 7, and two positioning grooves 16 are provided at one end of the fixed handle 7 near the mounting hole 13. A pin 14 is inserted into the mounting hole 13, and a fixing block 15 is fixedly installed at one end of the pin 14. The fixing block 15 is located inside the fixed handle 7. After the pin 14 is inserted into the mounting hole 13, it can provide conditions for the rotation installation of the anti-accidental contact wheel 11.

[0021] like Figures 1-4 As shown, a transverse shaft tube 17 is fixedly installed in the middle of the anti-accidental touch wheel 11. The shaft tube 17 is rotatably mounted on a pin 14 located at one end of the fixed handle 7. One end of the pin 14 passes through the shaft tube 17 and extends to one end of the anti-accidental touch wheel 11 and is secured with a snap ring. Two displacement grooves 12 are opened at a 45-degree angle with the shaft tube 17 as the center. A counterweight 18 is also fixedly installed in the anti-accidental touch wheel 11 located between the two displacement grooves 12. A positioning protrusion 19 is fixedly installed on the front side of the counterweight 18. By setting the anti-accidental touch wheel 11, the anti-accidental touch wheel 11 can limit the pressing operation of the limit handle 8 without external force rotation. When the displacement groove 12 rotates to the position above the limit handle 8, the pressing operation of the limit handle 8 can be realized.

[0022] It should be noted that the utility model discloses a kind of anti-misoperation butterfly valves, when needing to rotate shaft 6 to drive butterfly plate 5 to rotate, hand can hold anti-misoperation wheel 11, and anti-misoperation wheel 11 is rotated to one direction, to make anti-misoperation wheel 11 with shaft tube 17 as pivot rotate certain angle on pin shaft 14, and make the positioning lug 19 of counterweight 18 one side contact with the positioning groove 16 of fixed handle 7 one side corresponding, i.e., it can be used Positioning lug 19 and the shock feeling generated when positioning groove 16 contact are transmitted to operator hand through anti-misoperation wheel 11, to prompt operator anti-misoperation wheel 11 to rotate in place, i.e., one of displacement through groove 12 is located above counterweight 18, at this time, limit handle 8 can be pressed upwards synchronously, i.e., limit block 9 of limit handle 8 one side can be separated from corresponding limit groove 4, i.e., it can be driven by anti-misoperation wheel 11 Limit handle 7 drives shaft 6 to rotate, and then make shaft 6 drive butterfly plate 5 to rotate in valve body 1, when the opening and closing degree of butterfly plate 5 is adjusted, limit handle 8 can be released, and limit handle 8 is pressed down by the extension rebound force of compressed compression spring 10, i.e., limit handle 8 can be rotated in fixed handle 7 and make limit block 9 re-enter corresponding limit groove 4, i.e., it can be limited to fixed handle 7, and anti-misoperation wheel 11 can be rotated in reverse direction certain angle, to make anti-misoperation wheel 11 automatically reset rotation by the gravity of counterweight 18, and make anti-misoperation wheel 11 between two displacement through grooves 12 Always located above limit handle 8, to prevent limit handle 8 from being pressed and misoperation.

[0023] The basic principles and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A mistake-proof butterfly valve, characterized by: Including the valve body (1), the valve body (1) upper end fixed mounting has valve seat (2), the valve seat (2) upper end fixed mounting has end seat (3), the end seat (3) outside is provided with a plurality of limit slot (4), the valve body (1) inside movable mounting has butterfly plate (5), the butterfly plate (5) middle part fixed mounting has rotating shaft (6), and the rotating shaft (6) upper end sequentially passes through valve seat (2) and end seat (3) and fixed mounting has fixed handle (7), the fixed handle (7) lower end shaft connects with limit handle (8), the limit handle (8) relative to one side of end seat (3) fixed mounting has limit block (9), the limit block (9) clamping in corresponding limit slot (4), the limit handle (8) upper end and fixed handle (7) between intersperse connection has compression spring (10), the fixed handle (7) away from one end of end seat (3) movable mounting has anti-misoperation wheel (11), the anti-misoperation wheel (11) inside is provided with two displacement through slot (12).

2. A false touch prevention butterfly valve according to claim 1, characterized in that: One end of the fixed handle (7) is provided with a mounting hole (13), and two positioning grooves (16) are formed on one end of the fixed handle (7) close to the mounting hole (13).

3. A false touch prevention butterfly valve according to claim 2, characterized in that: The mounting hole (13) is provided with a pin shaft (14), one end of the pin shaft (14) is fixedly connected with a fixed block (15), and the fixed block (15) is located in the fixed handle (7).

4. A false touch prevention butterfly valve according to claim 3, characterized in that: The anti-misoperation wheel (11) is provided with a horizontal shaft tube (17) in the middle, the shaft tube (17) is rotatably connected with the pin shaft (14) located at one end of the fixed handle (7), and one end of the pin shaft (14) extends through the shaft tube (17) to one end of the anti-misoperation wheel (11) and is clamped with a clamping spring.

5. A false touch proof butterfly valve as claimed in claim 1, wherein: The two displacement through slots (12) are inclined at 45 degrees with the shaft tube (17) as the center, and a counterweight (18) is further fixedly connected in the anti-misoperation wheel (11) between the two displacement through slots (12), and the counterweight (18) is provided with a positioning protrusion (19) on the front side.

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