Butterfly flap ball valve

Abstract

The utility model discloses a butterfly clack ball valve which comprises a valve body, a valve element is arranged in the valve body, valve seats are arranged on the valve element, sealing rings are arranged on the two valve seats, compression springs are installed on the two valve seats, a first valve rod is arranged on the valve body, a butterfly clack is arranged on the valve element, an installation channel hole is formed in the first valve rod, and a second valve rod is arranged on the installation channel hole. A round buttress is arranged on the valve body, a cylindrical block is arranged on the round buttress, a first round concave hole is formed in the butterfly valve, a spherical groove is formed in the cylindrical block, a steel ball is arranged on the spherical groove, and a first self-lubricating shaft sleeve is arranged on the first round concave hole; a second round concave hole is formed in the valve element, a thrust bearing is arranged on the round buttress, and a second self-lubricating shaft sleeve is arranged on the second round concave hole. The utility model provides a multipurpose ball valve which is good in sealing performance and capable of accurately adjusting the medium flow, not only reduces the operation complexity of a pipeline, but also can greatly reduce the manufacturing cost and the maintenance cost of the whole equipment, and is worthy of popularization and application.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve, especially a butterfly ball valve. BACKGROUND

[0002] Ball valve is a kind of valve that controls fluid on-off by rotating ball, because of its simple structure, good sealing, strong medium pressure resistance, convenient operation and other characteristics, it is widely used in industrial pipeline system;Ball valve can be used to adjust medium flow, but the effect is not good, the principle of ball valve adjusting medium flow is to change the size of pipeline passage by rotating ball, so as to realize the adjustment of flow, however, the medium adjustment range of ball valve is narrow, and it is easy to appear flickering, poor engagement and other problems at small flow, and the passage opening of ball on ball is small when adjusting medium flow, under the condition of transporting impurities and many particles, it is easy to cause blockage, therefore, ball valve is not used to control medium flow traditionally, and is only used as pipeline full opening or full closing, and an additional regulating valve is installed on pipeline to adjust flow, which greatly increases the operation complexity of pipeline and the manufacturing cost of equipment.

[0003] Chinese utility model patent CN201320154413.6 discloses a soft sealing floating ball valve, the ball valve includes valve body, medium inlet pipeline, medium outlet pipeline and connecting cavity connected with medium inlet pipeline and medium outlet pipeline, valve seat is arranged in connecting cavity, ball body that can float in connecting cavity is arranged in valve seat to guide medium inlet pipeline and medium outlet pipeline to be connected or closed, ball body is driven by transmission member arranged on valve body, characterized in that: the valve seat is extension body that medium inlet pipeline and medium outlet pipeline extend to connecting cavity respectively, medium inlet pipeline and medium outlet pipeline are screwed with the inner wall of connecting cavity, and sealing ring is arranged between the outer circumferential surface of extension body and connecting cavity, and the end face of extension body towards ball body is respectively provided with sealing element that seals ball body. The ball valve can only be fully opened or closed to pipeline, and cannot accurately adjust the flow of pipeline medium. SUMMARY

[0004] The utility model solves the above-mentioned defects of prior art, provides a butterfly ball valve that is good in sealing performance and can accurately adjust medium flow, meets the demand of good sealing and accurate medium flow adjustment.

[0005] The utility model discloses a butterfly ball valve, including the valve body, the valve body is opened with the transverse flow channel, is provided with the valve core of the valve body and opens the transverse flow channel, the valve core is opened with the transverse through hole, the left and right sides of valve core are equipped with the valve seat of inserting in the valve body, two valve seat all are fixed with the sealing ring of cooperation in the ball surface of valve core, the side end of two valve seat all is installed with the compression spring of driving two valve seat and pressing to the ball surface direction of the ball, the valve body is rotatably connected with the first valve rod of driving the valve core rotation, is equipped with the butterfly valve on the transverse through hole, the first valve rod and the valve core are opened with the mutual installation channel hole, and the installation channel hole is installed with the second valve rod of driving the butterfly valve rotation, the bottom of valve body is fixed with the circular pier, the top of circular pier is fixed with the cylinder block, the bottom of butterfly valve is opened with the first round recess, the top of cylinder block is opened with the spherical recess, is installed with the steel ball on the spherical recess, the first round recess is placed at the steel ball, and the first round recess is installed with the first self-lubricating bushing of the insertion joint cooperation of cylinder block, the bottom of valve core is opened with the second round recess, the top of circular pier is opened with the circular ring installation groove, is installed with the thrust bearing at the circular ring installation groove, the bottom of valve core is placed at the top of thrust bearing through the second round recess, and the second round recess is installed with the second self-lubricating bushing of the insertion joint cooperation of circular pier. The effect of valve body, transverse flow channel, valve core, transverse through hole here is that can carry out the opening and closing operation to the pipeline, the effect of valve seat, compression spring here is that when the ball valve is used for a long time, the rotation of valve core can cause the abrasion of sealing ring, the sealing ring can be smaller, the compression spring can drive the valve seat to move, thereby the position of sealing ring is compensated, thereby the service life of sealing ring is improved, and the service life of ball valve is improved, and the maintenance cost is reduced, the effect of butterfly valve here is that can accurately regulate the flow of medium, the effect of circular pier, cylinder block, first round recess, steel ball, first self-lubricating bushing here is that can vertically support the butterfly valve, and the butterfly valve can resist the transverse load through the first self-lubricating bushing, so that when the butterfly valve is rotated, it is more relaxed and labor-saving, the effect of circular ring installation groove, thrust bearing here is that can vertically support the valve core, avoids the weight of valve core and press in the lower half of sealing ring, causes the lower half of sealing ring to wear too fast, needs to maintain frequently, and the thrust bearing can reduce the rotation resistance of valve core when the valve core is rotated, the effect of second self-lubricating bushing here is that can vertically support the valve core, and the valve core can resist the transverse load pressure of medium, so that the abrasion of the sealing ring on the pressure side is small, and the service life of sealing ring is long, the effect of first valve rod here is that can drive the valve core to rotate, the effect of second valve rod here is that can drive the rotation angle of butterfly valve.

[0006] Further improvement, the top surface of the first round concave hole is provided with a round ring notch in the shape of "eight", the round ring notch is in line with the steel ball, and the spherical groove is provided with a first self-lubricating layer. Here, the role of the round ring notch is to enable the butterfly valve to be conveniently, smoothly and stably installed at the steel ball; here, the role of the first self-lubricating layer is to enable the butterfly valve to rotate, and the weight is applied to the steel ball, the steel ball can rotate on the first self-lubricating layer, the friction resistance is small, the wear is small, and the butterfly valve rotates more labor-saving; here, the first self-lubricating layer is made of tin bronze material.

[0007] Further improvement, the valve body is provided with dovetail grooves on both sides, the two valve seat side ends are fixed with dovetail blocks matched with the two dovetail grooves respectively, and the valve body is provided with a first O-shaped sealing ring matched with the dovetail blocks. Here, the role of the dovetail groove, the dovetail block and the first O-shaped sealing ring is to block the medium from contacting the compression spring, thereby avoiding the compression spring from aging too fast and losing elasticity, greatly increasing the service life of the compression spring, and reducing the maintenance frequency and cost of the ball valve.

[0008] Further improvement, the outer contour of the two valve seats is provided with a second self-lubricating layer matched with the valve body; the outer contour of the two dovetail blocks is provided with a third self-lubricating layer matched with the dovetail groove. Here, the role of the second self-lubricating layer and the third self-lubricating layer is to enable the valve seat to move with small resistance, smoothness and avoid jamming after long-term use; here, the second self-lubricating layer and the third self-lubricating layer are made of tin bronze material.

[0009] Further improvement, the top end of the valve body is fixed with a mounting seat, the top end of the first valve rod is fixedly installed with a first worm gear, the mounting seat is rotatably connected with a first worm shaft meshing with the first worm gear, and the mounting seat is installed with a first hand wheel driving the first worm shaft to rotate; the top end of the second valve rod is installed with a second worm gear, the mounting seat is rotatably connected with a second worm shaft meshing with the second worm gear, and the mounting seat is installed with a second hand wheel driving the second worm shaft to rotate. Here, the mounting seat, the first worm gear, the first worm shaft and the first hand wheel can drive the first worm shaft to rotate through the rotation of the first hand wheel, then drive the first worm gear to rotate, and then drive the first valve rod to rotate, thereby driving the valve core to rotate to open and close the pipeline, here, the first worm gear and the first worm shaft have one-way self-locking property, only the first hand wheel can drive the valve core to rotate, and the valve core cannot be rotated by the medium pressure, thereby ensuring the accuracy of the rotation position of the valve core; here, the role of the second worm gear, the second worm shaft and the second hand wheel is to drive the second worm shaft to rotate through the rotation of the second hand wheel, then drive the second worm gear to rotate, and then drive the second valve rod to rotate, thereby driving the butterfly valve to rotate to accurately control the flow size of the pipeline; here, the second worm gear and the second worm shaft also have one-way self-locking property, only the second hand wheel can drive the butterfly valve to rotate, and the butterfly valve cannot be rotated by the medium pressure, thereby ensuring the accuracy of the rotation angle of the butterfly valve, and further ensuring the accuracy of the control of the medium flow.

[0010] Further improvement, the outer contour of the butterfly is provided with a sharp edge. Here the role of the sharp edge is to reduce the impact resistance generated by the medium impacting the butterfly, and when there are linear and muddy materials in the medium, the sharp edge can cut and split them, greatly reducing the risk of ball valve blockage.

[0011] Further improvement, the valve body includes a middle valve part, a left valve part and a right valve part, and the left valve part and the right valve part are fixed together with the middle valve part by fasteners. Here the role of the valve body including the middle valve part, the left valve part and the right valve part is to facilitate the assembly of the valve body, and then facilitate the installation and maintenance of the valve core, the valve seat and the valve rod, and the splicing method can make the valve body not need to be processed by casting, so the manufacturing cost is lower and the environment is more friendly (casting pollutes the environment).

[0012] The utility model has the beneficial effect that:

[0013] 1. The valve body, the horizontal flow channel, the valve core, and the horizontal through hole can be used to open and close the pipeline; the valve seat and the compression spring can compensate for the position of the sealing ring when the valve core rotates and causes wear to the sealing ring during long-term use of the ball valve, thereby prolonging the service life of the sealing ring and the ball valve and reducing maintenance costs.

[0014] 2. The butterfly valve can accurately regulate the flow of the medium; the circular support pier, the cylindrical block, the first circular recess, the steel ball, and the first self-lubricating bushing can longitudinally support the butterfly valve, and the first self-lubricating bushing can resist lateral loads on the butterfly valve, making it easier and more labor-saving to rotate the butterfly valve; the circular ring mounting groove and the thrust bearing can longitudinally support the valve core, preventing the valve core from pressing on the lower half of the sealing ring and causing excessive wear to the lower half of the sealing ring, which would require frequent maintenance. The thrust bearing can also reduce the rotational resistance of the valve core when it rotates.

[0015] 3. The second self-lubricating bushing can longitudinally support the valve core and resist lateral load pressure from the medium, thereby reducing wear to the sealing ring on the pressure side and prolonging the service life of the sealing ring; the first valve rod can rotate the valve core; and the second valve rod can rotate the butterfly valve.

[0016] 4). Through the mounting seat, the first worm wheel, the first worm, the first hand wheel, the rotation of the first hand wheel can drive the first worm to rotate, then drive the first worm wheel to rotate, and then drive the first valve rod to rotate, thereby driving the valve core to rotate to open and close the pipeline; through the second worm wheel, the second worm, the second hand wheel, the rotation of the second hand wheel can drive the second worm to rotate, then drive the second worm wheel to rotate, and then drive the second valve rod to rotate, thereby driving the butterfly valve to rotate to accurately control the flow of the pipeline;

[0017] 5). Through the sharp edge, the impact resistance generated by the impact of the medium on the butterfly valve can be reduced, and when there are linear objects and mud in the medium, the sharp edge can cut and split them, thereby greatly reducing the risk of ball valve blockage. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic diagram of the utility model;

[0019] Figure 2 It is Figure 1 A area local enlarged view of;

[0020] Figure 3 It is Figure 1 B area local enlarged view of;

[0021] Figure 4 It is a structure schematic diagram of the utility model in the mounting seat area is removed;

[0022] Figure 5 It is a structure schematic diagram of the mounting seat area in the utility model;

[0023] Figure 6 It is a perspective view of the butterfly valve in the utility model;

[0024] Figure 7 It is a working principle flow chart of adjusting the medium flow of the utility model.

[0025] Explanation of reference signs: valve body 1, middle valve part 1a, left valve part 1b, right valve part 1c, transverse flow passage 1-1, dovetail groove 1-2, valve core 2, transverse through hole 2-1, second round recess 2-2, valve seat 3, dovetail block 3-1, second self-lubricating layer 3-2, third self-lubricating layer 3-3, sealing ring 4, compression spring 5, first valve rod 6, installation passage hole 6-1, butterfly valve 7, first round recess 7-1, circular ring recess 7-2, sharp edge 7-3, second valve rod 8, circular support 9, circular ring installation groove 9-1, cylindrical block 10, spherical recess 10-1, first self-lubricating layer 10-2, steel ball 11, first self-lubricating sleeve 12, thrust bearing 13, second self-lubricating sleeve 14, first O-shaped sealing ring 15, mounting seat 16, first worm wheel 17, first worm 18, first hand wheel 19, second worm wheel 20, second worm 21, second hand wheel 22. DETAILED DESCRIPTION

[0026] The utility model will be further explained in connection with the drawings:

[0027] Referring to the drawings: this butterfly ball valve, including valve body 1, the valve body 1 is opened transverse flow passage 1-1, be provided with the valve core 2 of opening and closing transverse flow passage 1-1 in the valve body 1, the valve core 2 is opened transverse through hole 2-1, the left and right sides of valve core 2 are both provided with the valve seat 3 of inserting in the valve body 1 place, two valve seats 3 are all fixed with the sealing ring 4 of cooperation in the spherical surface of valve core 2, the side end of two valve seats 3 is all installed with the compression spring 5 of driving two valve seats 3 to the spherical surface direction of spherical body 2 pressure operation, the valve body 1 is rotatably connected with the first valve rod 6 of driving valve core 2 rotation, transverse through hole 2-1 is equipped with butterfly valve 7, the first valve rod 6 with valve core 2 is opened installation passage hole 6-1 of intercommunication, installation passage hole 6-1 is installed with the second valve rod 8 of driving butterfly valve 7 rotation;The bottom surface of valve body 1 is fixed with circular support 9, the top end of circular support 9 is fixed with cylindrical block 10, the bottom of butterfly valve 7 is opened first round recess 7-1, the top end of cylindrical block 10 is opened spherical recess 10-1, spherical recess 10-1 is installed with steel ball 11, first round recess 7-1 is placed at steel ball 11, first round recess 7-1 is installed with the first self-lubricating sleeve 12 of the insertion cooperation of cylindrical block 10;The bottom surface of valve core 2 is opened second round recess 2-2, the top end of circular support 9 is opened circular ring installation groove 9-1, circular ring installation groove 9-1 is installed with thrust bearing 13, valve core 2 bottom is placed through second round recess 2-2 the top end of thrust bearing 13, second round recess 2-2 is installed with the second self-lubricating sleeve 14 of the insertion cooperation of circular support 9.

[0028] The top surface of first round recess 7-1 is opened circular ring recess 7-2 of "eight" type, circular ring recess 7-2 is in line with steel ball 11, and spherical recess 10-1 is provided with first self-lubricating layer 10-2.

[0029] The valve body 1 is provided with dovetail grooves 1-2 on both sides, and the two valve seats 3 are fixed with dovetail blocks 3-1 matched with the dovetail grooves 1-2 respectively.

[0030] The outer contour of the two valve seats 3 is provided with a second self-lubricating layer 3-2 matched with the valve body 1 for plug-in cooperation, and the outer contour of the two dovetail blocks 3-1 is provided with a third self-lubricating layer 3-3 matched with the dovetail grooves 1-2 for plug-in cooperation.

[0031] The top end of the valve body 1 is fixed with a mounting seat 16, the top end of the first valve rod 6 is fixedly installed with a first worm gear 17, the mounting seat 16 is rotatably connected with a first worm 18 engaged with the first worm gear 16, and the mounting seat 16 is installed with a first hand wheel 19 for driving the first worm 18 to rotate; the top end of the second valve rod 8 is installed with a second worm gear 20, the mounting seat 16 is rotatably connected with a second worm 21 engaged with the second worm gear 20, and the mounting seat 16 is installed with a second hand wheel 22 for driving the second worm 21 to rotate.

[0032] The outer contour of the butterfly valve 7 is provided with a sharp edge 7-3.

[0033] The valve body 1 comprises a middle valve part 1a, a left valve part 1b and a right valve part 1c, and the left valve part 1b and the right valve part 1c are fixed together with the middle valve part 1a by fasteners.

[0034] The working principle of the utility model is: when it is needed to open the pipeline and adjust the medium flow, only the first hand wheel 19 needs to be twisted first, the rotation of the first hand wheel 19 will drive the first worm 18 to rotate, the rotation of the first worm 18 will drive the first valve rod 6 to rotate, thereby driving the valve core 2 to rotate and making the transverse through hole 2-1 and the transverse flow channel 1-1 be in the coaxial position, and then the pipeline is in the fully open state, but sometimes the medium flow needs to be adjusted, at this time, the second hand wheel 22 can be twisted, the rotation of the second hand wheel 22 will drive the second worm 21 to rotate, the rotation of the second worm 21 will drive the second worm gear 20 to rotate, thereby driving the second valve rod 8 to rotate, thereby driving the butterfly valve 7 to rotate, and the rotation angle of the butterfly valve 7 needs to be adjusted only to adjust the medium flow (as shown in the figure). Figure 7 The utility model not only has strong sealing performance for the opening and closing of the pipeline, but also can adjust the medium flow, thereby reducing the complexity of the pipeline operation, greatly reducing the manufacturing cost of the whole equipment, greatly reducing the maintenance cost of the whole equipment, and being worth popularization and application.

[0035] Although the utility model has been illustrated and described by referring to the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details can be made within the scope of the claims.

Claims

1. A butterfly ball valve comprising a valve body (1) having a transverse flow channel (1-1) formed therein, characterized in that: The valve body (1) is provided with a valve core (2) opening and closing the transverse flow channel (1-1), the valve core (2) is provided with a transverse through hole (2-1), the left and right sides of the valve core (2) are provided with valve seats (3) inserted in the valve body (1), the two valve seats (3) are fixed with sealing rings (4) matched with the spherical surface of the valve core (2), the side ends of the two valve seats (3) are provided with compression springs (5) driving the two valve seats (3) to press towards the spherical surface of the valve core (2), the valve body (1) is rotatably connected with a first valve rod (6) driving the valve core (2) to rotate, the transverse through hole (2-1) is provided with a butterfly valve (7), the first valve rod (6) and the valve core (2) are provided with an installation channel hole (6-1) communicating with each other, and the installation channel hole (6-1) is installed with a second valve rod (8) driving the butterfly valve (7) to rotate. The bottom surface of the valve body (1) is fixed with a circular pier (9), the top end of the circular pier (9) is fixed with a cylindrical block (10), the bottom of the butterfly valve (7) is provided with a first circular recess (7-1), the top end of the cylindrical block (10) is provided with a spherical recess (10-1), the spherical recess (10-1) is installed with a steel ball (11), the first circular recess (7-1) is placed at the steel ball (11), and the first circular recess (7-1) is installed with a first self-lubricating bushing (12) inserted with the cylindrical block (10); the bottom surface of the valve core (2) is provided with a second circular recess (2-2), the top end of the circular pier (9) is provided with a circular ring installation groove (9-1), the circular ring installation groove (9-1) is installed with a thrust bearing (13), the bottom of the valve core (2) is placed on the top end of the thrust bearing (13) through the second circular recess (2-2), and the second circular recess (2-2) is installed with a second self-lubricating bushing (14) inserted with the circular pier (9).

2. A butterfly ball valve according to claim 1, characterized in that: The top surface of the first circular recess (7-1) is provided with a circular ring notch (7-2) in the shape of "eight", the circular ring notch (7-2) is linearly matched with the steel ball (11), and the spherical recess (10-1) is provided with a first self-lubricating layer (10-2).

3. A butterfly ball valve according to claim 2, characterised in that: The two sides of the valve body (1) are provided with dovetail grooves (1-2), the side ends of the two valve seats (3) are fixed with dovetail blocks (3-1) matched with the two dovetail grooves (1-2) respectively, and the valve body (1) is installed with a first O-shaped sealing ring (15) matched with the dovetail blocks (3-1).

4. The butterfly ball valve according to claim 1, characterized in that: The outer contours of the two valve seats (3) are provided with a second self-lubricating layer (3-2) inserted with the valve body (1), and the outer contours of the two dovetail blocks (3-1) are provided with a third self-lubricating layer (3-3) inserted with the dovetail grooves (1-2).

5. The butterfly ball valve according to claim 1, characterized in that: The top end of the valve body (1) is fixed with a mounting seat (16), the top end of the first valve rod (6) is fixedly installed with a first worm wheel (17), the mounting seat (16) is rotatably connected with a first worm (18) engaged with the first worm wheel (16), and the mounting seat (16) is installed with a first hand wheel (19) rotating the first worm (18); the top end of the second valve rod (8) is installed with a second worm wheel (20), the mounting seat (16) is rotatably connected with a second worm (21) engaged with the second worm wheel (20), and the mounting seat (16) is installed with a second hand wheel (22) rotating the second worm (21).

6. The butterfly ball valve according to claim 1, characterized in that: The outer contour of the butterfly valve (7) is provided as a sharp blade (7-3).

7. The butterfly valve of claim 1, wherein: The valve body (1) comprises a middle valve part (1a), a left valve part (1b) and a right valve part (1c), and the left valve part (1b) and the right valve part (1c) are fixed together with the middle valve part (1a) by fasteners.

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