Butterfly valve with locking structure

Abstract

The utility model provides a butterfly valve with a locking structure, which comprises a valve body, a valve shaft rotatably arranged on the valve body, and a butterfly plate arranged on the valve shaft, the connecting seat is arranged at the upper end of the valve body and is positioned on the outer side of the valve shaft; the protective cover is arranged at the upper end of the connecting seat; one end of the driving rod is vertically arranged on the side end surface of the valve shaft and is positioned in the protective cover; the arc-shaped side hole is formed in the side end surface of the protective cover and is in clearance fit with the driving rod; the locking sleeve is arranged at the other end of the driving rod in a sliding mode, the locking clamping holes are formed in the protective cover and communicate with the arc-shaped side hole, the positioning mechanism is arranged between the locking sleeve and the arc-shaped side hole, the diameter of the locking clamping holes is larger than that of the arc-shaped side hole, and the locking sleeve is in clearance fit with the locking clamping holes. The other end of the driving rod penetrates through the arc-shaped side hole and is located on the outer side of the protective cover, and the upper end of the valve shaft is located in the protective cover.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field, concretely relates to a butterfly valve with locking structure. BACKGROUND

[0002] The butterfly valve is also called flap valve, it is a simple structure regulating valve, can be used for low pressure pipeline medium switch control butterfly valve is to refer to the closing piece (valve lobe or butterfly plate) for disc, rotates around the valve shaft to reach the opening and closing of a kind of valve. It can be used to control air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive medium and various types of fluid flow. On pipeline, mainly play cut-off and throttling effect. Butterfly valve actuator is a disc-shaped butterfly plate, rotates in the valve body around its own axis, to achieve the purpose of opening and closing or adjusting.

[0003] The current butterfly valve is mainly controlled by driving device (such as turbine worm, rotating handle) to drive the disc plate to turn over, so as to realize the opening or closing of medium flow, although the thread surface can realize the thread self-locking effect, but in the case of frequent vibration or medium pressure fluctuation, the valve shaft is easy to drive the disc plate to rotate slightly, it is unable to further fix the valve shaft after the valve shaft rotates, so as to easily lead to flow control error. UTILITY MODEL CONTENTS

[0004] The utility model is directed at the defects and deficiencies of prior art, provide a kind of butterfly valve with locking structure.

[0005] To achieve the above object, the utility model adopts the following technical scheme: a butterfly valve with locking structure, including valve body, rotatable valve shaft arranged on the valve body, disc plate arranged on the valve shaft, further including connecting seat arranged on the upper end of the valve body and located on the outer side of the valve shaft, protective cover arranged on the upper end of the connecting seat, driving rod vertically arranged on the side end surface of the valve shaft and located in the protective cover, arc-shaped side hole opened in the side end surface of the protective cover and matched with the driving rod, locking sleeve slidably arranged on the other end of the driving rod, at least two locking clamping holes opened on the protective cover and communicated with the arc-shaped side hole, positioning mechanism arranged between the locking sleeve and the arc-shaped side hole, the diameter of the locking clamping hole is greater than the diameter of the arc-shaped side hole, the locking sleeve and the locking clamping hole are matched, the other end of the driving rod passes through the arc-shaped side hole and is located on the outer side of the protective cover, and the upper end of the valve shaft is located in the protective cover.

[0006] Further improvement: the positioning mechanism includes at least one length slot opened on the side of the driving rod, sliding block arranged in the locking sleeve and matched with the length slot, left side slot arranged on the side of the driving rod and communicated with the length slot, and the sliding block and the left side slot are matched.

[0007] Further improvement is that the driving rod is provided with a mounting sliding groove on the circumferential side, the mounting sliding groove is located close to the right end of the driving rod, the mounting sliding groove is located on the side of the length sliding groove on the driving rod, the left end of the mounting sliding groove is connected with the length sliding groove, the right end of the mounting sliding groove penetrates through the right end of the driving rod, the mounting sliding groove is a reverse L-shaped sliding groove, and the mounting sliding groove is in clearance fit with the sliding clamping block.

[0008] Further improvement is that the driving rod is provided with a right side slot on the circumferential side, the right side slot is located close to the right end of the driving rod, the right side slot is connected with the length sliding groove, and the sliding clamping block is in clearance fit with the right side slot.

[0009] Further improvement is that at least one clamping protrusion is arranged on the driving rod and located on the left side slot, and the clamping protrusion is a circular arc protrusion.

[0010] Further improvement is that at least one clamping protrusion is arranged on the driving rod and located on the right side slot, and the clamping protrusion is a circular arc protrusion.

[0011] After the above technical scheme is adopted, the disc plate can be flipped when it is needed to be controlled, the locking sleeve is pulled out of the locking clamping hole, the locking sleeve or the driving rod is driven along the circumference of the protective cover, the driving rod moves circumferentially in the arc-shaped side hole, the valve shaft and the disc plate are driven to flip to an open or closed position, then the locking sleeve is pushed to slide on the driving rod and enters the locking clamping hole, the circumferential movement of the driving rod in the arc-shaped side hole is limited, and the sliding direction of the locking sleeve on the driving rod is limited by the positioning mechanism, so that the valve shaft is fixed, the valve shaft and the disc plate are prevented from being slightly rotated, and the flow control is not prone to be inaccurate.

[0012] Further effect: after the locking sleeve is pulled to slide on the driving rod to the left side, the locking sleeve is driven to drive the sliding clamping block to enter the left side slot, so that the transverse sliding of the locking sleeve on the driving rod is further limited, and the locking sleeve is further limited in the locking clamping hole.

[0013] Further effect: when the locking sleeve needs to be installed on the driving rod, the position of the sliding clamping block is aligned with the position of the mounting sliding groove and is pushed in, so that the sliding clamping block enters the length sliding groove through the mounting sliding groove, and the installation of the locking sleeve is realized.

[0014] Further effect: after the locking sleeve is pulled to slide on the driving rod to the right side, the locking sleeve is driven to drive the sliding clamping block to enter the right side slot, so that the transverse sliding of the locking sleeve on the driving rod is further limited.

[0015] Further effect: the clamping protrusion is used for clamping the locking sleeve in the locking clamping hole when the locking sleeve enters the locking clamping hole. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is a front view of the valve body, the connecting seat, and the protective cover in the present application;

[0018] Figure 2 is a side view of the valve body, the connecting seat, the protective cover, the arc-shaped side hole, the locking sleeve, and the locking clamping hole in the present application;

[0019] Figure 3 is a side view of the protective cover and the locking clamping hole in the present application;

[0020] Figure 4 is a top view of the protective cover and the arc-shaped side hole in the present application;

[0021] Figure 5 is a structural schematic view of the driving rod, the length sliding groove, the left side slot, the mounting sliding groove, and the right side slot in the present application;

[0022] Figure 6 is a structural schematic view of the locking sleeve and the sliding clamping block in the present application;

[0023] Figure 7 is a bottom view of the driving rod, the length sliding groove, the mounting sliding groove, and the right side slot in the present application;

[0024] Figure 8 is an enlarged view of A part corresponding to Figure 5

[0025] Explanation of reference signs: valve body 1, valve shaft 2, disc plate 3, connecting seat 4, protective cover 5, driving rod 6, arc-shaped side hole 7, locking sleeve 8, locking clamping hole 9, length sliding groove 10, sliding clamping block 11, left side slot 12, mounting sliding groove 13, right side slot 14, clamping protrusion 15. DETAILED DESCRIPTION

[0026] The present application will be further described in combination with the drawings and specific embodiments.

[0027] Referring to Figures 1 to 8 ​The technical scheme adopted in the embodiment is shown as follows: a butterfly valve with a locking structure, comprising a valve body 1, a valve shaft 2 rotatably arranged on the valve body 1, a disc plate 3 arranged on the valve shaft 2, a connecting seat 4 arranged on the upper end of the valve body 1 and located outside the valve shaft 2, a protective cover 5 arranged on the upper end of the connecting seat 4, a driving rod 6 vertically arranged on the side end face of the valve shaft 2 and located in the protective cover 5, an arc-shaped side hole 7 opened in the side end face of the protective cover 5 and in clearance fit with the driving rod 6, a locking sleeve 8 slidably arranged on the other end of the driving rod 6, at least two locking clamping holes 9 opened in the protective cover 5 and in communication with the arc-shaped side hole 7, a positioning mechanism arranged between the locking sleeve 8 and the arc-shaped side hole 7, the diameter of the locking clamping hole 9 being greater than the diameter of the arc-shaped side hole 7, the locking sleeve 8 being in clearance fit with the locking clamping hole 9, the other end of the driving rod 6 passing through the arc-shaped side hole 7 and being located outside the protective cover 5, and the upper end of the valve shaft 2 being located in the protective cover 5. The protective cover 5 is a circular cover, and the lower end of the protective cover 5 is bolted to the upper end of the connecting seat 4. One end of the driving rod 6 is fixedly connected to the valve shaft 2 by welding or bolts or screws. A sealing ring is arranged between the valve shaft 2 and the connecting seat 4.

[0028] When the locking clamping hole 9 is two, the two locking clamping holes 9 are arranged at positions where the valve shaft 2 is driven to rotate to the fully open or fully closed position of the valve body 1. When the locking clamping hole 9 is four, the four locking clamping holes 9 are equidistantly arranged along the position of the arc-shaped side hole 7. When the four locking clamping holes 9 are arranged, the disc plate 3 in the half-open state can be fixed.

[0029] The positioning mechanism comprises at least one length sliding groove 10 opened in the circumferential side of the driving rod 6, a sliding clamping block 11 arranged in the locking sleeve 8 and in clearance fit with the length sliding groove 10, and a left side slot 12 arranged on the circumferential side of the driving rod 6 and in communication with the length sliding groove 10, the sliding clamping block 11 being in clearance fit with the left side slot 12. The length sliding groove 10 is arranged along the length direction of the driving rod 6. The length sliding groove 10, the sliding clamping block 11 and the left side slot can be arranged as one. If it is required to arrange two components, the two length sliding grooves 10 and the sliding clamping block 11 are respectively symmetrically arranged upward and downward, and the two left side slots 12 are staggered arranged upward and downward. The left side slot 12 is arranged at the left side of the length sliding groove 10.

[0030] An installation sliding groove 13 is opened in the circumferential side of the driving rod 6, the installation sliding groove 13 is located close to the right end of the driving rod 6, the installation sliding groove 13 is located on the side of the length sliding groove 10 on the driving rod 6, the left end of the installation sliding groove 13 is in communication with the length sliding groove 10, the right end of the installation sliding groove 13 passes through the right end of the driving rod 6, the installation sliding groove 13 is a reverse L-shaped sliding groove, and the installation sliding groove 13 is in clearance fit with the sliding clamping block 11. The size of the installation sliding groove 13 is the same as that of the length sliding groove 10.

[0031] The right side slot 14 is located close to the right end of the driving rod 6, and the right side slot 14 is communicated with the length slot 10, and the sliding block 11 is in clearance fit with the right side slot 14.

[0032] At least one clamping protrusion 15 is arranged on the driving rod 6 and located on the left side slot 12, and the clamping protrusion 15 is a circular arc protrusion.

[0033] At least one clamping protrusion 15 is arranged on the driving rod 6 and located on the right side slot 14, and the clamping protrusion 15 is a circular arc protrusion.

[0034] The working principle of the utility model is: when it is needed to control the disc plate 3 to turn over, the locking sleeve 8 is pulled out of the locking clamping hole 9, then the locking sleeve 8 or the driving rod 6 is driven along the circumference of the protective cover 5, the driving rod 6 is moved circumferentially in the arc-shaped side hole 7, thereby the valve shaft 2 is driven to turn over the disc plate 3 to the open or closed position, then the locking sleeve 8 is pushed to slide on the driving rod 6, and the locking sleeve 8 is entered into the locking clamping hole 9, thereby the circumferential movement of the driving rod 6 in the arc-shaped side hole 7 is limited, and the sliding direction of the locking sleeve 8 on the driving rod 6 is limited through the positioning mechanism, so as to realize the fixation of the valve shaft 2, and further prevent the valve shaft 2 from driving the disc plate 3 to slightly rotate, so that the flow control is not prone to be inaccurate.

[0035] After the locking sleeve 8 is pulled to slide on the driving rod 6 to the left side, the locking sleeve 8 is rotated to drive the sliding block 11 to enter into the left side slot 12, thereby the transverse sliding of the locking sleeve 8 on the driving rod 6 is further limited, so that the locking sleeve 8 is further limited in the locking clamping hole 9.

[0036] When it is needed to install the locking sleeve 8 on the driving rod 6, the position of the sliding block 11 is aligned with the position of the installation slot 13 and is pushed in, so that the sliding block 11 enters into the length slot 10 through the installation slot 13, thereby the installation of the locking sleeve 8 is realized.

[0037] After pulling the locking sleeve 8 to slide on the drive rod 6 to the right side, the sliding block 11 is driven into the right slot 14 by rotating the locking sleeve 8, so as to further limit the transverse sliding of the locking sleeve 8 on the drive rod 6;

[0038] The engaging protrusion 15 is used for clamping the locking sleeve 8 in the locking clamping hole 9 when the locking sleeve 8 enters the locking clamping hole 9.

[0039] The utility model wants to protect is the structure of product, the model of each element is not the content of the utility model protection, also is the known art, the element on the market can be as a butterfly valve with locking structure selection application as long as it can realize the above-mentioned function of the utility model. Therefore, the model of the element and other parameters are not described in detail in the utility model. The contribution of the utility model is to combine each element scientifically.

[0040] The basic principle and main features of the utility model and its advantages are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements. 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 attached claims and their equivalents. The utility model is not described in detail, which is the known technology of those skilled in the art.

Claims

1. A butterfly valve with locking structure, comprising a valve body, a valve shaft rotatably arranged on the valve body, and a disc plate arranged on the valve shaft, characterized in that: The valve further comprises a connecting seat arranged on the upper end of the valve body and outside the valve shaft, a protective cover arranged on the upper end of the connecting seat, a driving rod vertically arranged on the side end face of the valve shaft and inside the protective cover, an arc-shaped side hole arranged on the side end face of the protective cover and in clearance fit with the driving rod, a locking sleeve slidably arranged on the other end of the driving rod, at least two locking clamping holes arranged on the protective cover and in communication with the arc-shaped side hole, a positioning mechanism arranged between the locking sleeve and the arc-shaped side hole, the diameter of the locking clamping hole is larger than that of the arc-shaped side hole, the locking sleeve and the locking clamping hole are in clearance fit, the other end of the driving rod passes through the arc-shaped side hole and is located outside the protective cover, and the upper end of the valve shaft is located inside the protective cover.

2. The butterfly valve with locking structure according to claim 1, characterized in that: The positioning mechanism comprises at least one length sliding groove arranged on the circumferential side of the driving rod, a sliding clamping block arranged in the locking sleeve and in clearance fit with the length sliding groove, and a left side slot arranged on the circumferential side of the driving rod and in communication with the length sliding groove, and the sliding clamping block and the left side slot are in clearance fit.

3. The butterfly valve with locking structure according to claim 2, characterized in that: The circumferential side of the driving rod is provided with a mounting sliding groove, the mounting sliding groove is located close to the right end of the driving rod, the mounting sliding groove is located on the side of the length sliding groove on the driving rod, the left end of the mounting sliding groove is in communication with the length sliding groove, the right end of the mounting sliding groove passes through the right end of the driving rod, the mounting sliding groove is a reverse L-shaped sliding groove, and the mounting sliding groove and the sliding clamping block are in clearance fit.

4. The butterfly valve with locking structure according to claim 2, characterized in that: The circumferential side of the driving rod is provided with a right side slot, the right side slot is located close to the right end of the driving rod, the right side slot is in communication with the length sliding groove, and the sliding clamping block and the right side slot are in clearance fit.

5. The butterfly valve with locking structure according to claim 2, characterized in that: At least one clamping protrusion is arranged on the left side slot of the driving rod, and the clamping protrusion is a circular arc protrusion.

6. The butterfly valve with locking structure according to claim 4, characterized in that: At least one clamping protrusion is arranged on the right side slot of the driving rod, and the clamping protrusion is a circular arc protrusion.

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