CN211599558U

CN211599558U - Improved butterfly valve

Info

Publication number: CN211599558U
Application number: CN201922353434.0U
Authority: CN
Inventors: 李良福; 李铭良
Original assignee: Quanwatts Valves Co ltd
Current assignee: Quanwa Valve Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-29
Anticipated expiration: 2029-12-24

Abstract

The utility model provides an improved butterfly valve with simple structure and capable of preventing others from opening, which comprises a butterfly valve body, a valve cover and a valve plate arranged on the butterfly valve body, a valve rod is arranged above the valve plate and positioned in the valve body, a ciphering box is fixedly arranged on the valve cover, the upper end part of the valve rod is positioned in the ciphering box, a ciphering sleeve is fixedly arranged on the valve rod and provided with a second channel, a spline groove is arranged on the inner wall of the second channel of the ciphering sleeve, a slide block is slidably arranged in the ciphering box, a limiting device for limiting the slide sleeve to slide out of the ciphering box is arranged between the slide block and the ciphering box, the upper end part of the slide block is provided with a spline engaged with the spline groove, a rotating rod is arranged on the ciphering box in a penetrating way, one end of the rotating rod penetrates out of the ciphering box, and the other end of the rotating rod penetrates through, and a sliding device for enabling the sliding block to slide upwards is arranged between the rotating rod and the sliding block.

Description

Improved butterfly valve

Technical Field

The utility model relates to the technical field of valves, in particular to improved generation butterfly valve.

Background

With the development of society, the application of pipelines in production and life is more and more extensive. Wherein, the butterfly valve is a commonly used opening and closing valve in pipeline connection. But because it is light and easy to open, it has certain potential safety hazard in production. If the door is opened maliciously by others, the door is easy to lose in production. In the public resource management, if the system is started by non-working personnel, resource waste is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides an improved generation butterfly valve that simple structure, can prevent that other people from opening.

In order to achieve the above object, the technical solution of the present invention is to provide an improved butterfly valve, which comprises a butterfly valve body, a valve cover disposed on the butterfly valve body, a water inlet channel and a water outlet channel radially disposed along the butterfly valve body, and a valve plate disposed between the water inlet channel and the water outlet channel for controlling opening and closing of fluid, wherein a valve rod is disposed above the valve plate and inside the butterfly valve body, a first channel is disposed above the butterfly valve body, a lower end of the valve rod is fixedly connected to the valve plate, an upper end of the valve rod penetrates out of the first channel, a ciphering box is fixedly disposed on the valve cover, an upper end of the valve rod is disposed inside the ciphering box, a ciphering sleeve is fixedly disposed on the valve rod, a second channel is disposed on the ciphering sleeve, a spline groove is disposed on an inner wall of the second channel, and a slider is slidably disposed inside the ciphering sleeve, be equipped with the stop device who is used for restricting the sliding sleeve roll-off encryption cover between slider and the encryption cover, slider upper end be equipped with spline groove meshing's spline, wear to be equipped with the dwang on the encryption box, dwang one end is worn out the encryption box, the dwang other end is worn to locate the slider, the dwang with be equipped with the slider of messenger's slider gliding slider that makes progress between the slider.

The further improvement is that: the sliding device is a plurality of first limiting bulges, the first limiting bulges are fixedly arranged at the lower end part of the rotating rod, a cavity for the first limiting bulges to rotate is formed in the sliding block, and the sliding block is positioned on the upper end surface of the cavity and provided with a first limiting groove clamped with the first limiting bulges.

The further improvement is that: the limiting device is characterized in that a limiting table is arranged on the sliding block, and a limiting surface clamped with the limiting table is arranged on the encryption sleeve.

The further improvement is that: the upper end of dwang is fixed to be provided with the rotation hand wheel that conveniently rotates the dwang.

The utility model has the advantages and the beneficial effects that:

if the butterfly valve is not opened by a worker, other people are difficult to open the butterfly valve according to the step of opening the butterfly valve, the butterfly valve is encrypted, and the problems that the butterfly valve is opened by other people by mistake, production loss and waste of public resources are caused are avoided.

Drawings

Fig. 1 is the utility model discloses an improved generation butterfly valve structure schematic diagram of cutting open.

Fig. 2 is the embodiment of the utility model provides an encrypt spline groove of cover and the spline meshing structure sketch map of slider.

Fig. 3 is a schematic sectional view of embodiment a-a of the present invention.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1-2, an improved butterfly valve comprises a butterfly valve body 1, a valve cover 3 disposed on the butterfly valve body 1, a water inlet channel and a water outlet channel radially disposed along the butterfly valve body 1, a valve plate 2 disposed between the water inlet channel and the water outlet channel for controlling opening and closing of a fluid, a valve rod 4 disposed above the valve plate 2 and inside the butterfly valve body 1, a first channel disposed above the butterfly valve body 1, a lower end of the valve rod 4 fixedly connected to the valve plate 2, an upper end of the valve rod 4 extending out of the first channel, a cryptographic box 5 fixedly disposed on the valve cover 3, an upper end of the valve rod 4 disposed inside the cryptographic box 5, a cryptographic sleeve 7 fixedly disposed on the valve rod 4, a second channel 71 disposed on the cryptographic sleeve 7, and a spline 103 groove 73 disposed on an inner wall of the second channel 71 of the cryptographic sleeve 7, but the slidable is equipped with slider 10 in the encryption cover 7, be equipped with spacing platform 7 on the slider 10, encryption cover 7 go up seted up with spacing face 104 of spacing platform 7 block, spacing platform 7 and spacing face 104 block can spacing slider 10 roll-off encryption cover 7, slider 10 upper end be equipped with spline 103 groove 73 meshed spline 103, wear to be equipped with dwang 8 on the encrypt case 5, dwang 8 one end is worn out encrypt case 5, the dwang 8 other end is worn to locate slider 10, the tip symmetrical fixed two first spacing archs 81 that are equipped with under the dwang 8, set up on the slider 10 and supply the rotatory cavity 101 of first spacing protruding 81, slider 10 is located cavity 101 up end seted up with the first spacing groove 102 of first spacing protruding 81 block.

In order to facilitate the opening of the butterfly valve, a rotating hand wheel which facilitates the rotation of the rotating rod 8 is fixedly arranged at the upper end of the rotating rod 8.

The working principle is as follows:

when will open the butterfly valve, upwards stimulate dwang 8 earlier, under the effect of first spacing arch 81, dwang 8 drives slider 10 and upwards slides, spline 103 on the slider 10 and the spline 103 groove 73 block on the encryption cover 7, make slider 10 and encryption cover 7 realize the interlock, spacing boss and spacing face 104 block this moment, prevent slider 10 roll-off encryption cover 7, upwards rotate dwang 8 again, make first spacing arch 81 and first spacing groove 102 block on the dwang 8, rotate dwang 8 again, dwang 8 drives slider 10 and rotates, slider 10 drives encryption cover 7 and rotates, secret cover drives valve rod 4 and rotates, open valve plate 2. If the operator is not working, according to the operation, under the normal condition, the rotating rod 8 can only be rotated, so that the problems that the butterfly valve is mistakenly opened by other people, the production loss and the waste of public resources are caused are avoided.

Having shown and described the basic principles and essential features of the invention and its advantages, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but is susceptible to various changes and modifications without departing from the spirit and scope of the invention, all of which are intended to be covered by the appended claims and their equivalents.

Claims

1. The utility model provides an improved generation butterfly valve, include the butterfly valve body, set up in valve gap on the butterfly valve body, along radial inhalant canal and the exhalant canal of seting up of butterfly valve body, set up in inhalant canal with be used for controlling the valve plate that the fluid opened and close between the exhalant canal, the valve plate top is located the inside valve rod that is equipped with of butterfly valve body, first passageway has been seted up to butterfly valve body top, the lower tip of valve rod with valve plate fixed connection, wear out the valve rod upper end first passageway, its characterized in that: the valve rod upper end is located in the encrypted box, the fixed encrypted cover that is equipped with on the valve rod, the second passageway has been seted up to the encrypted cover, the encrypted cover is located the spline groove has been seted up on the inner wall of second passageway, slidable is equipped with the slider in the encrypted cover, be equipped with the stop device who is used for restricting the sliding sleeve roll-off encrypted cover between slider and the encrypted cover, slider upper end be equipped with spline groove meshing's spline, wear to be equipped with the dwang on the encrypted box, dwang one end is worn out the encrypted box, the dwang other end is worn to locate the slider, the dwang with be equipped with the slider that makes the slider upwards slide between the slider.

2. An improved butterfly valve as claimed in claim 1, wherein: the sliding device is a plurality of first limiting bulges, the first limiting bulges are fixedly arranged at the lower end part of the rotating rod, a cavity for the first limiting bulges to rotate is formed in the sliding block, and the sliding block is positioned on the upper end surface of the cavity and provided with a first limiting groove clamped with the first limiting bulges.

3. An improved butterfly valve as claimed in claim 1, wherein: the limiting device is characterized in that a limiting table is arranged on the sliding block, and a limiting surface clamped with the limiting table is arranged on the encryption sleeve.

4. An improved butterfly valve as claimed in claim 1, wherein: the upper end of dwang is fixed to be provided with the rotation hand wheel that conveniently rotates the dwang.