WO2015024271A1 - Sealing apparatus for central pivot of circular sprinkling machine - Google Patents
Sealing apparatus for central pivot of circular sprinkling machine Download PDFInfo
- Publication number
- WO2015024271A1 WO2015024271A1 PCT/CN2013/082258 CN2013082258W WO2015024271A1 WO 2015024271 A1 WO2015024271 A1 WO 2015024271A1 CN 2013082258 W CN2013082258 W CN 2013082258W WO 2015024271 A1 WO2015024271 A1 WO 2015024271A1
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- Prior art keywords
- spherical
- sealing
- seat
- spherical seat
- inlet pipe
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
- F16L27/04—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces
- F16L27/06—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces with special sealing means between the engaging surfaces
- F16L27/073—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces with special sealing means between the engaging surfaces one of the cooperating surfaces forming the sealing means
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/09—Watering arrangements making use of movable installations on wheels or the like
- A01G25/092—Watering arrangements making use of movable installations on wheels or the like movable around a pivot centre
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
- F16L27/04—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces
- F16L27/053—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces held in place by bolts passing through flanges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
Definitions
- the invention belongs to the technical field of sprinkler irrigation and relates to a central pivot sealing device of a circular sprinkler.
- sprinkler irrigation technology is a water-saving irrigation technology with advanced technology, stable performance, excellent water-saving effect and remarkable social and economic benefits.
- the circular sprinkler has been widely promoted due to its large single irrigation area, strong adaptability to crops and terrain, high land utilization, high spray uniformity, high mechanization and automation, and energy saving. Good water saving and social and economic benefits have been achieved in irrigation.
- the Chinese utility model patent 201220173311.4 discloses a sealing structure of a large circular sprinkler center center outlet pipe, which comprises a fixed inlet pipe and a rotating water pipe which are sleeved together, and a fixed inlet pipe or a rotating water pipe contact at the socket portion.
- One or three annular grooves are arranged on the surface, and a Y-shaped rubber sealing ring is assembled in each annular groove.
- the Chinese utility model patent 201120025484.7 discloses a water sealing device for the central fulcrum portion of the pointer type sprinkler, comprising an upper water supply pipe and a lower water supply pipe, and the upper water supply pipe is installed between the upper water supply pipe and the lower water supply pipe Lining, upper water supply pipe and upper water supply pipe lining welding Connected on the same axis, the outer wall of the upper water supply pipe is matched with the inner wall of the lower water supply pipe, and the inner wall of the lower water supply pipe is provided with a seal ring groove and a lip seal groove, and the seal ring groove and the lip seal groove are respectively installed There are 0 type seals and lip seals.
- the Chinese utility model patent 201120293780.5 discloses a water-sealing structure of a central vertical pipe of a circular sprinkler, which comprises a rotating upper elbow, a central vertical pipe and a rotating lower elbow, and the upper end of the central vertical pipe is fixedly mounted with a rotating upper elbow, and the lower end of the central vertical pipe
- the fixed installation of the rotating lower elbow is innovative: an annular projection is formed at the upper end of the central riser, a sealing rubber ring is installed in the annular projection, and the bottom end of the rotating upper elbow is inserted into the central vertical tube and passed through The sealing ring is sealed to the central standpipe.
- the oscillating motion causes the frictional forces of the 0-type, Y-type, and lip-type seals in the above-mentioned patented technology to be different at each radial position, and the wear amount is uneven; 4)
- the above-mentioned patented technology is installed on the rotary water pipe and fixed In the radial gap between the inlet pipes, the wear ring can not automatically compensate for the wear gap after the seal ring wears, resulting in serious leakage.
- the transfer pipe and the fixed inlet pipe can be replaced and separated from each other, and the replacement and maintenance require large equipment such as a crane. The replacement work is labor intensive.
- the top of the spherical seat is provided with a spherical seat upper flange, and an annular sealing gland is arranged above the upper flange of the spherical seat; the inner side of the sealing gland is provided with an annular second sealing groove An upper spherical sealing ring is mounted in the second sealing groove, and a side of the upper spherical sealing ring relative to the spherical body is a curved surface; and the upper flange of the spherical seat and the sealing gland are fixedly connected by bolts .
- the design principle of the curved surface of the upper spherical seal is the same as that of the lower spherical seal.
- a sealing adjustment washer is disposed between the upper flange of the spherical seat and the sealing gland, and the flange of the spherical seat, the sealing gland and the sealing adjusting washer are fixedly connected by bolts. Because there is a certain gap between the bottom of the upper spherical sealing ring and the upper flange of the spherical seat, when used, it can be equipped with sealing adjustment washers of different thicknesses. After the arc surface of the upper spherical sealing ring wears, the seal is replaced by a smaller thickness.
- the inner wall of the second seal groove has an inclined surface at an angle of 45 degrees.
- the inclined surface is designed to facilitate the oblique downward movement and the clearance compensation of the upper spherical sealing ring when the sealing adjustment washer with a small thickness is replaced, and the inclined upper surface spherical sealing ring has a diagonal downward pressing effect, which is favorable for the upper spherical sealing.
- the circle fits to the spherical body.
- the top opening of the spherical seat is in the same plane as the center of the spherical body. Further, the plane of the top opening of the spherical seat is slightly higher than the center of the spherical body. In this way, on the one hand, the degree of freedom of the upward movement of the spherical body can be limited; on the other hand, it is advantageous for the downward movement of the upper spherical sealing ring to compensate for the wear gap, because the upper spherical sealing ring and the spherical body are in the downward movement of the upper spherical sealing ring. The diameter of the contact surface is getting larger and larger, so that the relative clearance is getting smaller and smaller.
- an expansion joint is disposed between the fixed inlet pipe and the spherical seat, and an upper end of the expansion joint is fixedly connected to a bottom end of the spherical seat, and a lower end of the expansion joint is fixedly connected to an upper end of the fixed inlet pipe.
- the invention realizes the sealing by the spherical contact surface formed by the mutual pressing between the spherical seat and the spherical body, and the spherical shape formed by the gravity is compared with the cylindrical contact surface between the fixed inlet pipe and the rotating water pipe in the past.
- the contact surface gap is extremely small, which can effectively solve the problem of water leakage due to the contact surface gap.
- the sealing device of the invention is designed with a triple leakproof sealing structure: the lower spherical sealing ring functions as the first sealing, and the sealing is transported by the water pump from the fixed inlet pipe into the spherical seat and the spherical body.
- the sealing gasket to function as the second seal, seal the leakage from the contact surface between the spherical body and the spherical seat after the leakage at the lower spherical sealing ring;
- the upper spherical sealing ring serves as the third sealing
- the function of sealing the leakage from the gap between the sealing gland and the spherical body, and the upper spherical sealing ring can also play a second sealing role to a certain extent.
- the expansion or contraction of the fixed inlet pipe and the rotary water pipe eliminates the additional load on the sealing device caused by the expansion and contraction of the fixed inlet pipe and the rotary water pipe, reduces the stress and wear of the sealing device, and improves the service life of the sealing device. In order to minimize the leakage of seal failure.
- FIG. 3 is a schematic structural view of a spherical seat of the present invention.
- Figure 4 is a partial enlarged view of a portion A of Figure 3;
- Figure 5 is a schematic structural view of a spherical body of the present invention.
- Figure 6 is a schematic structural view of a lower spherical seal ring of the present invention.
- Figure 8 is a schematic structural view of the upper spherical seal ring of the present invention.
- Figure 9 is a schematic view showing the assembly of the upper spherical seal ring and the sealing gland according to the present invention.
- Figure 11 is a schematic structural view of a fixed inlet pipe of the present invention
- Figure 12 is a schematic view showing the structure of a rotary water pipe according to the present invention.
- a circular sprinkler central fulcrum sealing device comprises a central fulcrum consisting of a fixed inlet pipe 2 and a rotating water pipe 3, a fixed inlet pipe 2 and a central tower of a circular sprinkler 1 fixed connection, the rotary water pipe 3 is connected to the central tower 1 through the bearing seat 4; a rotating spherical sealing assembly 5 is arranged between the fixed inlet pipe 2 and the rotary water pipe 3, and the rotating spherical sealing assembly 5 comprises a matching spherical surface
- the water receiving hole 9 and the water passing hole 10 are respectively opened at the center of the spherical body 7 and the spherical body 8, and the spherical seat 7 and the spherical body 8, and the water passing hole 9 and the water passing hole 10 communicate with each other, and the inner side wall of the spherical seat 7 is provided.
- the lower flange 18, the top end of the spherical body 8 is provided with a spherical upper flange 19, the upper end of the fixed inlet pipe 2 is provided with a fixed inlet pipe flange 22, and the lower end of the rotating water pipe 3 is provided with a rotating water supply pipe flange 23;
- the upper end of the expansion joint 6 is fixedly connected to the bottom end of the spherical seat 7 through the expansion joint upper flange 21, the spherical seat lower flange 18 and the bolt, and the lower end of the expansion joint 6 passes through the expansion joint lower flange 20 and the fixed inlet water pipe flange 22
- the bolt is fixedly connected to the upper end of the fixed inlet pipe 2;
- the rotary water pipe 3 is fixedly connected to the spherical body 8 through the rotating water pipe flange 23, the spherical upper flange 19 and the bolt.
- the irrigation water is passed through the fixed inlet pipe 2, the expansion joint 6, the water passing hole 9, the water passing hole 10, and the rotating water pipe 3 to reach the nozzle provided on the truss of the circular sprinkler to realize sprinkler irrigation.
- the base seal is realized by the spherical contact surface formed by the squeeze between the spherical seat 7 and the spherical body 8 with a small gap, and the lower spherical seal ring 12, the upper spherical seal ring 17 and the seal adjusting washer 15 are simultaneously It acts as a seal to minimize water leakage.
Abstract
The present application provides a sealing apparatus for a central pivot of a circular sprinkling machine. The sealing apparatus comprises the central pivot consisting of a fixed water inlet pipe (2) and a rotary water delivery pipe (3). A rotary spherical sealing assembly (5) is disposed between the fixed water inlet pipe (2) and the rotary water delivery pipe (3). The sealing assembly comprises a spherical seat (7) and a spherical body (8) which are in fit. Communicated water flow holes (9) are disposed in the centers of the spherical seat (7) and the spherical body (8). A first annular sealing groove (11) is disposed on an inner side of the spherical seat (7). A lower spherical seal ring (12) is disposed in the first sealing groove (11). The bottom end of the spherical seat (7) is fixedly connected to the fixed water inlet pipe (2). The top end of the spherical body (8) is fixedly connected to the rotary water delivery pipe (3). Sealing is implemented by means of a spherical contact surface formed by mutual squeezing of the spherical seat and the spherical body, and the sealing performance is good. The rotary spherical sealing assembly has a high degree of freedom of movement, so that the deflection movement and the additional load between the rotary water delivery pipe and the fixed water inlet pipe can be eliminated, thereby avoiding the phenomenon of non-uniform wear of the seal ring, and extending the service life of the sealing apparatus.
Description
一种圆形喷灌机中心支轴密封装置 技术领域 Circular pivoting machine central support shaft sealing device
本发明属于喷灌技术领域，涉及一种圆形喷灌机中心支轴密封装 置。 The invention belongs to the technical field of sprinkler irrigation and relates to a central pivot sealing device of a circular sprinkler.
背景技术 Background technique
在节水型灌溉技术中， 喷灌技术是一种技术先进、 性能稳定、 节 水效果优良、社会经济效益显著的节水灌溉技术。 圆形喷灌机因具有 单机灌溉面积大、对作物和地形适应性强、 土地利用率高、 喷洒均匀 度高、机械化和自动化程度高以及节能高效等多种优点得到了大力推 广， 在农业节水灌溉中取得了良好的节水效果和社会经济效益。 In the water-saving irrigation technology, sprinkler irrigation technology is a water-saving irrigation technology with advanced technology, stable performance, excellent water-saving effect and remarkable social and economic benefits. The circular sprinkler has been widely promoted due to its large single irrigation area, strong adaptability to crops and terrain, high land utilization, high spray uniformity, high mechanization and automation, and energy saving. Good water saving and social and economic benefits have been achieved in irrigation.
在喷灌作业时，圆形喷灌机的整个桁架和悬臂部分在塔架车的驱 动下围绕中心支轴作转动， 要求中心支轴的固定进水管固定不动、旋 转输水管随同桁架作转动， 喷灌用水在水泵作用下， 经固定进水管和 旋转输水管输送到桁架上的各喷头。在结构上就出现了旋转输水管要 以固定进水管为转轴作 360度连续旋转运动，这就要求在旋转输水管 与固定进水管之间留存一定活动间隙，如果旋转输水管与固定进水管 连接位置处的密封结构设计不合理， 就会发生大量漏水现象， 严重降 低喷灌机的节水效果。 During the sprinkler irrigation operation, the entire truss and cantilever portion of the circular sprinkler rotates around the central fulcrum under the driving of the tower car. The fixed inlet pipe of the central fulcrum is required to be fixed, and the rotating water pipe is rotated along with the truss. The water is pumped by the water pump to the nozzles on the truss through the fixed inlet pipe and the rotary water pipe. In the structure, a rotating water pipe is required to make a 360-degree continuous rotation motion with a fixed inlet pipe as a rotating shaft, which requires a certain movable gap between the rotating water pipe and the fixed water inlet pipe, if the rotating water pipe is connected with the fixed water inlet pipe. The design of the sealing structure at the location is unreasonable, and a large amount of water leakage will occur, which will seriously reduce the water saving effect of the sprinkler.
中国实用新型专利 201220173311.4公开了一种大型圆形喷灌机 中心架出水管的密封结构，包括相互套接在一起的固定进水管和旋转 输水管，在套接部位固定进水管或旋转输水管的接触面上设置 1~3个 环形槽， 在每个环形槽内装配一个 Y型橡胶密封圈。 The Chinese utility model patent 201220173311.4 discloses a sealing structure of a large circular sprinkler center center outlet pipe, which comprises a fixed inlet pipe and a rotating water pipe which are sleeved together, and a fixed inlet pipe or a rotating water pipe contact at the socket portion. One or three annular grooves are arranged on the surface, and a Y-shaped rubber sealing ring is assembled in each annular groove.
中国实用新型专利 201120025484.7公开了一种用于指针式喷灌 机中心支轴部位的水密封装置， 包括上供水管和下供水管， 所述上供 水管和下供水管之间装有上供水管内衬，上供水管与上供水管内衬焊
接在同一轴线上， 上供水管内衬外壁与下供水管内壁间隙配合， 所述 下供水管内壁设有密封圈槽和唇型密封圈槽，密封圈槽和唇型密封圈 槽中分别装有 0型密封圈和唇型密封圈。 The Chinese utility model patent 201120025484.7 discloses a water sealing device for the central fulcrum portion of the pointer type sprinkler, comprising an upper water supply pipe and a lower water supply pipe, and the upper water supply pipe is installed between the upper water supply pipe and the lower water supply pipe Lining, upper water supply pipe and upper water supply pipe lining welding Connected on the same axis, the outer wall of the upper water supply pipe is matched with the inner wall of the lower water supply pipe, and the inner wall of the lower water supply pipe is provided with a seal ring groove and a lip seal groove, and the seal ring groove and the lip seal groove are respectively installed There are 0 type seals and lip seals.
中国实用新型专利 201120293780.5公开了一种圆形喷灌机中心 竖管水封结构， 包括旋转上弯头、 中心竖管及旋转下弯头， 中心竖管 上端固定安装旋转上弯头， 中心竖管下端固定安装旋转下弯头， 其创 新点为： 在中心竖管的上端部制有环形凸起， 在该环形凸起内安装密 封胶圈，旋转上弯头底端插装在中心竖管内并通过该密封胶圈与中心 竖管密封。 The Chinese utility model patent 201120293780.5 discloses a water-sealing structure of a central vertical pipe of a circular sprinkler, which comprises a rotating upper elbow, a central vertical pipe and a rotating lower elbow, and the upper end of the central vertical pipe is fixedly mounted with a rotating upper elbow, and the lower end of the central vertical pipe The fixed installation of the rotating lower elbow is innovative: an annular projection is formed at the upper end of the central riser, a sealing rubber ring is installed in the annular projection, and the bottom end of the rotating upper elbow is inserted into the central vertical tube and passed through The sealing ring is sealed to the central standpipe.
上述专利均可以实现圆形喷灌机中心支轴的密封，但上述专利均 局限于采用 0型、 Y型、 唇型密封圈等橡胶质密封圈， 尽最大限度减 小旋转输水管与中心固定进水管之间径向间隙的径向密封技术来解 决两者相对旋转运动时的漏水密封问题。现有密封技术存在的不足表 现在以下几个方面： 1 ) 为保证固定进水管与旋转输水管之间的旋转 运动， 两者之间必须留有最小旋转间隙， 此间隙的存在成为漏水的最 大隐患； 2 ) 因 0型、 Y型、 唇型密封圈均为橡胶材质制造， 喷灌机 旋转输水管相对固定进水管作 360度旋转运动时，上述专利技术中的 密封圈磨损速度均较快， 随着密封圈的磨损漏水量迅速增大； 3 ) 喷 灌机旋转输水管在围绕固定进水管作 360度旋转运动时，因受到地面 平整度的影响， 旋转输水管相对固定进水管会产生偏斜摆动运动， 导 致上述专利技术中的 0型、 Y型、 唇型密封圈在各径向位置的摩擦力 不同， 磨损量不均匀； 4 )上述专利技术中密封圈均安装于旋转输水 管与固定进水管之间的径向间隙内，密封圈磨损后不能自动补偿磨损 间隙， 导致漏水进一歩严重， 更换维修时， 只有把旋转输水管与固定 进水管相互拆卸分离才能更换， 而且更换维修需要吊车等大型设备，
更换工作劳动强度大。 All of the above patents can achieve the sealing of the center pivot of the circular sprinkler, but the above patents are limited to the use of rubber seals such as 0-type, Y-type, lip seals, etc., to minimize the rotation of the rotating water pipe and the center The radial sealing technique of the radial gap between the water pipes solves the problem of water leakage sealing during the relative rotational movement of the two. The existing shortage of sealing technology is manifested in the following aspects: 1) In order to ensure the rotational movement between the fixed inlet pipe and the rotating water pipe, there must be a minimum rotation gap between the two, and the existence of this gap becomes the largest leakage. Hidden troubles; 2) Because the 0-type, Y-type, and lip-type seals are made of rubber material, when the rotary water supply pipe of the sprinkler is rotated 360 degrees relative to the fixed inlet pipe, the wear speed of the seal ring in the above patent technology is relatively fast. With the wear of the seal ring, the water leakage increases rapidly; 3) When the rotary water pipe of the sprinkler rotates around the fixed inlet pipe for 360 degrees, due to the influence of the ground flatness, the rotating water pipe will be deflected relative to the fixed inlet pipe. The oscillating motion causes the frictional forces of the 0-type, Y-type, and lip-type seals in the above-mentioned patented technology to be different at each radial position, and the wear amount is uneven; 4) The above-mentioned patented technology is installed on the rotary water pipe and fixed In the radial gap between the inlet pipes, the wear ring can not automatically compensate for the wear gap after the seal ring wears, resulting in serious leakage. When replacing the repair, only the rotation The transfer pipe and the fixed inlet pipe can be replaced and separated from each other, and the replacement and maintenance require large equipment such as a crane. The replacement work is labor intensive.
发明内容 Summary of the invention
本发明的目的在于针对现有技术存在的问题，提供一种密封效果 好且使用寿命长的圆形喷灌机中心支轴密封装置。 SUMMARY OF THE INVENTION The object of the present invention is to provide a center pivot sealing device for a circular sprinkler having a good sealing effect and a long service life in view of the problems existing in the prior art.
为此， 本发明采用如下技术方案： To this end, the present invention adopts the following technical solutions:
一种圆形喷灌机中心支轴密封装置，包括由固定进水管和旋转输 水管构成的中心支轴，所述固定进水管与旋转输水管之间设有旋转球 形密封组件， 所述旋转球形密封组件包括相适配的球面座和球面体， 所述球面座和球面体的中心处开设有相连通的通水孔，所述球面座的 内侧设有环形的第一密封槽，所述第一密封槽内安装有下球面密封圈， 且所述下球面密封圈相对球面体的一侧为弧形面；所述球面座底端与 固定进水管固定连接，所述球面体顶端与旋转输水管固定连接。其中， 下球面密封圈弧形面的设计目的在于使下球面密封圈外侧面与球面 体的球形面相适配， 减小下球面密封圈与球面体之间的摩擦。 A circular pivoting machine central fulcrum sealing device comprises a central fulcrum composed of a fixed inlet pipe and a rotating water pipe, and a rotating spherical sealing assembly is arranged between the fixed inlet pipe and the rotating water pipe, the rotating spherical seal The assembly includes a matching spherical seat and a spherical body, and the center of the spherical seat and the spherical body is provided with a communicating water passage hole, and an inner side of the spherical seat is provided with an annular first sealing groove, the first a lower spherical sealing ring is mounted in the sealing groove, and a side of the lower spherical sealing ring with respect to the spherical body is an arc surface; the bottom end of the spherical seat is fixedly connected with the fixed inlet pipe, the spherical body top end and the rotating water pipe Fixed connection. Among them, the curved surface of the lower spherical sealing ring is designed to match the outer surface of the lower spherical sealing ring with the spherical surface of the spherical body, and reduce the friction between the lower spherical sealing ring and the spherical body.
进一歩地， 所述球面座顶端设有球面座上法兰， 所述球面座上法 兰的上方设有环形的密封压盖；所述密封压盖的内侧面设有环形的第 二密封槽， 所述第二密封槽内安装有上球面密封圈， 且所述上球面密 封圈相对球面体的一侧为弧形面；所述球面座上法兰与密封压盖之间 通过螺栓固定连接。上球面密封圈弧形面的设计原理同下球面密封圈。 Further, the top of the spherical seat is provided with a spherical seat upper flange, and an annular sealing gland is arranged above the upper flange of the spherical seat; the inner side of the sealing gland is provided with an annular second sealing groove An upper spherical sealing ring is mounted in the second sealing groove, and a side of the upper spherical sealing ring relative to the spherical body is a curved surface; and the upper flange of the spherical seat and the sealing gland are fixedly connected by bolts . The design principle of the curved surface of the upper spherical seal is the same as that of the lower spherical seal.
进一歩地，所述球面座上法兰与密封压盖之间设有密封调整垫圈， 所述球面座上法兰、密封压盖及密封调整垫圈之间通过螺栓固定连接。 因上球面密封圈底部与球面座上法兰之间存在一定间隙， 使用时， 可 配备不同厚度的密封调整垫圈，在上球面密封圈的圆弧面出现磨损后， 通过更换厚度较小的密封调整垫圈即可使上球面密封圈的位置向下 移动，进而减小上球面密封圈内侧弧形面与球面体外球面之间的间隙，
达到上球面密封圈磨损间隙的自动补偿。而且， 相对于上球面密封圈 的更换， 更换密封调整垫圈更为简单， 只要预先准备不同厚度的密封 调整垫圈， 根据上球面密封圈磨损量的大小随时更换密封调整垫圈， 即可起到延长上球面密封圈使用寿命和减少检修更换时间的目的。 Further, a sealing adjustment washer is disposed between the upper flange of the spherical seat and the sealing gland, and the flange of the spherical seat, the sealing gland and the sealing adjusting washer are fixedly connected by bolts. Because there is a certain gap between the bottom of the upper spherical sealing ring and the upper flange of the spherical seat, when used, it can be equipped with sealing adjustment washers of different thicknesses. After the arc surface of the upper spherical sealing ring wears, the seal is replaced by a smaller thickness. Adjusting the washer moves the position of the upper spherical seal downward, thereby reducing the gap between the inner curved surface of the upper spherical seal and the spherical outer spherical surface. Automatic compensation for the wear gap of the upper spherical seal is achieved. Moreover, it is simpler to replace the seal adjustment washer with respect to the replacement of the upper spherical seal ring. As long as the seal adjustment washers of different thicknesses are prepared in advance, the seal adjustment washer can be replaced at any time according to the amount of wear of the upper spherical seal ring, and the extension can be extended. The purpose of the spherical seal life and the reduction of repair and replacement time.
进一歩地， 所述第二密封槽的内壁具有一 45度角的倾斜面。 倾 斜面的设计有利于更换厚度较小的密封调整垫圈时上球面密封圈作 斜向下移动和间隙补偿，因倾斜面对上球面密封圈有斜向下挤压的作 用， 有利于上球面密封圈向球面体贴合。 Further, the inner wall of the second seal groove has an inclined surface at an angle of 45 degrees. The inclined surface is designed to facilitate the oblique downward movement and the clearance compensation of the upper spherical sealing ring when the sealing adjustment washer with a small thickness is replaced, and the inclined upper surface spherical sealing ring has a diagonal downward pressing effect, which is favorable for the upper spherical sealing. The circle fits to the spherical body.
进一歩地， 所述球面座顶端开口与球面体的球心处于同一平面。 进一歩地， 所述球面座顶端开口所在平面稍高于球面体的球心。 如此， 一方面可限制球面体向上运动的自由度； 另一方面有利于上球 面密封圈出现磨损后向下运动补偿磨损间隙，因为上球面密封圈向下 运动过程中上球面密封圈与球面体接触面的直径越来越大，从而相对 间隙越来越小。 Further, the top opening of the spherical seat is in the same plane as the center of the spherical body. Further, the plane of the top opening of the spherical seat is slightly higher than the center of the spherical body. In this way, on the one hand, the degree of freedom of the upward movement of the spherical body can be limited; on the other hand, it is advantageous for the downward movement of the upper spherical sealing ring to compensate for the wear gap, because the upper spherical sealing ring and the spherical body are in the downward movement of the upper spherical sealing ring. The diameter of the contact surface is getting larger and larger, so that the relative clearance is getting smaller and smaller.
进一歩地， 所述固定进水管与球面座之间设有膨胀节， 所述膨胀 节的上端与球面座的底端固定连接，膨胀节的下端与固定进水管的上 端固定连接。 Further, an expansion joint is disposed between the fixed inlet pipe and the spherical seat, and an upper end of the expansion joint is fixedly connected to a bottom end of the spherical seat, and a lower end of the expansion joint is fixedly connected to an upper end of the fixed inlet pipe.
本发明通过球面座与球面体之间相互挤压形成的球形接触面来 实现密封， 相较于以往固定进水管与旋转输水管间的圆柱形接触面， 在重力作用下， 挤压形成的球形接触面间隙极小， 可有效解决因接触 面间隙发生漏水的问题。 另外， 为达到不漏水的理想密封效果， 本发 明密封装置设计了三重防漏密封结构：下球面密封圈起第一道密封的 作用，密封经水泵输送从固定进水管进入球面座和球面体通水孔的水； 调整密封垫圈起第二道密封的作用，密封于下球面密封圈处泄漏后从 球面体与球面座接触面之间渗出的漏水；上球面密封圈起第三道密封
的作用， 密封从密封压盖与球面体之间缝隙渗出的漏水， 而且， 上球 面密封圈一定程度上也可起到第二道密封的作用。 The invention realizes the sealing by the spherical contact surface formed by the mutual pressing between the spherical seat and the spherical body, and the spherical shape formed by the gravity is compared with the cylindrical contact surface between the fixed inlet pipe and the rotating water pipe in the past. The contact surface gap is extremely small, which can effectively solve the problem of water leakage due to the contact surface gap. In addition, in order to achieve the ideal sealing effect without water leakage, the sealing device of the invention is designed with a triple leakproof sealing structure: the lower spherical sealing ring functions as the first sealing, and the sealing is transported by the water pump from the fixed inlet pipe into the spherical seat and the spherical body. Water in the water hole; adjust the sealing gasket to function as the second seal, seal the leakage from the contact surface between the spherical body and the spherical seat after the leakage at the lower spherical sealing ring; the upper spherical sealing ring serves as the third sealing The function of sealing the leakage from the gap between the sealing gland and the spherical body, and the upper spherical sealing ring can also play a second sealing role to a certain extent.
本发明的有益效果在于： 1 ) 本发明通过球面座与球面体之间相 互挤压形成的球形接触面来实现密封， 密封性能好； 2) 本发明旋转 球形密封组件采用具有万向性的球面结构， 运动自由度好， 能够消除 因地面平整度差产生的旋转输水管与固定进水管之间的偏斜运动和 相应附加载荷，避免了密封组件各径向位置处摩擦力不相同和密封圈 磨损量不均匀的现象， 提高了密封装置的使用寿命； 3 ) 通过更换更 易拆卸的密封调整垫圈， 可实现上球面密封圈磨损间隙的自动补偿； 4) 能够通过膨胀节的伸缩消除不同季节下固定进水管和旋转输水管 的膨胀或收缩量，消除固定进水管和旋转输水管因热胀冷缩对密封装 置造成的附加载荷， 减小密封装置的受力及磨损， 提高密封装置的使 用寿命， 从而最大限度的消除密封失效漏水。 The invention has the following advantages: 1) The invention realizes sealing by the spherical contact surface formed by the mutual extrusion between the spherical seat and the spherical body, and the sealing performance is good; 2) The rotating spherical sealing assembly of the invention adopts a spherical surface with universality Structure, good freedom of motion, can eliminate the skew movement between the rotating water pipe and the fixed inlet pipe caused by the difference in ground level and the corresponding additional load, avoiding the frictional force at each radial position of the sealing assembly and the sealing ring The uneven wear amount improves the service life of the sealing device; 3) By replacing the more easily disassembled sealing adjustment washer, the automatic compensation of the wear gap of the upper spherical seal can be realized; 4) The expansion and expansion of the expansion joint can be eliminated under different seasons. The expansion or contraction of the fixed inlet pipe and the rotary water pipe eliminates the additional load on the sealing device caused by the expansion and contraction of the fixed inlet pipe and the rotary water pipe, reduces the stress and wear of the sealing device, and improves the service life of the sealing device. In order to minimize the leakage of seal failure.
附图说明 DRAWINGS
图 1为本发明的结构示意图； Figure 1 is a schematic structural view of the present invention;
图 2为本发明旋转球形密封组件的结构示意图； 2 is a schematic structural view of a rotary spherical seal assembly of the present invention;
图 3为本发明球面座的结构示意图； 3 is a schematic structural view of a spherical seat of the present invention;
图 4为图 3的 A部局部放大图； Figure 4 is a partial enlarged view of a portion A of Figure 3;
图 5为本发明球面体的结构示意图； Figure 5 is a schematic structural view of a spherical body of the present invention;
图 6为本发明下球面密封圈的结构示意图； Figure 6 is a schematic structural view of a lower spherical seal ring of the present invention;
图 7为本发明密封压盖的结构示意图； Figure 7 is a schematic structural view of a sealing gland of the present invention;
图 8为本发明上球面密封圈的结构示意图； Figure 8 is a schematic structural view of the upper spherical seal ring of the present invention;
图 9为本发明上球面密封圈与密封压盖的装配示意图； Figure 9 is a schematic view showing the assembly of the upper spherical seal ring and the sealing gland according to the present invention;
图 10为本发明膨胀节的结构示意图； Figure 10 is a schematic structural view of an expansion joint of the present invention;
图 11为本发明固定进水管的结构示意图；
图 12为本发明旋转输水管的结构示意图。 Figure 11 is a schematic structural view of a fixed inlet pipe of the present invention; Figure 12 is a schematic view showing the structure of a rotary water pipe according to the present invention.
图中， 1-中心塔架， 2-固定进水管， 3-旋转输水管， 4-轴承座， 5-旋转球形密封组件， 6-膨胀节， 7-球面座， 8-球面体， 9-通水孔， 10- 通水孔， 11-第一密封槽， 12-下球面密封圈， 1201-圆弧面， 13-球面 座上法兰， 14-密封压盖， 15-密封调整垫圈， 16-第二密封槽， 1601- 倾斜面， 17-上球面密封圈， 1701-圆弧面， 18-球面座下法兰， 19-球 面体上法兰， 20-膨胀节下法兰， 21-膨胀节上法兰， 22-固定进水管法 兰， 23-旋转输水管法兰。 In the figure, 1-center tower, 2-fixed inlet pipe, 3-rotary water pipe, 4-bearing seat, 5-rotating spherical seal assembly, 6-expansion joint, 7-spherical seat, 8-spherical body, 9- Water hole, 10-water hole, 11-first seal groove, 12-lower spherical seal, 1201-circular surface, 13-spherical upper flange, 14-sealing gland, 15-sealing adjustment washer, 16-Second sealing groove, 1601- inclined surface, 17-up spherical sealing ring, 1701-circular surface, 18-spherical lower flange, 19-spherical upper flange, 20-expansion lower flange, 21 - Expansion joint flange, 22- fixed inlet flange, 23-rotating water supply flange.
具体实施方式 detailed description
如图 1-12所示， 一种圆形喷灌机中心支轴密封装置， 包括由固 定进水管 2和旋转输水管 3构成的中心支轴，固定进水管 2与圆形喷 灌机的中心塔架 1固定连接，旋转输水管 3通过轴承座 4与中心塔架 1相连接； 固定进水管 2与旋转输水管 3之间设有旋转球形密封组件 5， 旋转球形密封组件 5包括相适配的球面座 7和球面体 8， 球面座 7 和球面体 8的中心处分别开设有通水孔 9和通水孔 10， 且通水孔 9 和通水孔 10相互连通，球面座 7的内侧壁设有环形的第一密封槽 11， 第一密封槽 11内安装有下球面密封圈 12， 且下球面密封圈 12相对 球面体 8的一侧为弧形面 1201;球面座 7顶端设有球面座上法兰 13， 球面座上法兰 13的上方还设有环形的密封压盖 14，球面座上法兰 13 与密封压盖 14之间设有密封调整垫圈 15，球面座上法兰 13、密封压 盖 14及密封调整垫圈 15之间通过螺栓固定连接； 密封压盖 14的内 侧面设有环形的第二密封槽 16，且第二密封槽 16的内壁具有一呈 45 度角倾斜的倾斜面 1601， 第二密封槽 16内安装有上球面密封圈 17， 上球面密封圈 17相对球面体 8的一侧为弧形面 1701; 并且球面座 7 顶端开口所在平面稍高于球面体 8的球心， 这点由图 2和 4可看出，
图 2中标示有两根水平中心线， 其中， 较上一根指示球面座 7顶端开 口所在平面，较下一根指示球面体 8的水平中心线亦即球面体 8球心 所在水平面； 图 4更好地表示了球面座 7顶端开口处的结构， 图 3和 4中的圆形虚线表示球面体 8的安装位置； As shown in Figure 1-12, a circular sprinkler central fulcrum sealing device comprises a central fulcrum consisting of a fixed inlet pipe 2 and a rotating water pipe 3, a fixed inlet pipe 2 and a central tower of a circular sprinkler 1 fixed connection, the rotary water pipe 3 is connected to the central tower 1 through the bearing seat 4; a rotating spherical sealing assembly 5 is arranged between the fixed inlet pipe 2 and the rotary water pipe 3, and the rotating spherical sealing assembly 5 comprises a matching spherical surface The water receiving hole 9 and the water passing hole 10 are respectively opened at the center of the spherical body 7 and the spherical body 8, and the spherical seat 7 and the spherical body 8, and the water passing hole 9 and the water passing hole 10 communicate with each other, and the inner side wall of the spherical seat 7 is provided. a first sealing groove 11 having a ring shape, a lower spherical sealing ring 12 is mounted in the first sealing groove 11, and a side of the lower spherical sealing ring 12 with respect to the spherical body 8 is a curved surface 1201; a spherical seat is provided at the top end of the spherical seat 7 The upper flange 13 is provided with an annular sealing gland 14 above the flange 13 of the spherical seat, and a sealing adjusting washer 15 is disposed between the upper flange 13 of the spherical seat and the sealing gland 14 , and the flange 13 on the spherical seat The sealing gland 14 and the sealing adjustment washer 15 are fixedly connected by bolts; the sealing gland 14 The inner side surface is provided with an annular second sealing groove 16, and the inner wall of the second sealing groove 16 has an inclined surface 1601 inclined at an angle of 45 degrees, and the upper spherical sealing ring 17 is mounted in the second sealing groove 16, the upper spherical sealing ring 17 is a curved surface 1701 with respect to one side of the spherical body 8; and the plane of the top opening of the spherical seat 7 is slightly higher than the center of the spherical body 8, as can be seen from FIGS. 2 and 4. In Fig. 2, two horizontal center lines are indicated, wherein the upper one indicates the plane of the top opening of the spherical seat 7, and the horizontal center line indicating the spherical body 8 is the horizontal plane of the spherical body 8; The structure at the top opening of the spherical seat 7 is better shown, and the circular dotted lines in Figs. 3 and 4 indicate the mounting position of the spherical body 8;
固定进水管 2与球面座 7之间还设有膨胀节 6， 膨胀节 6的上端 设有膨胀节上法兰 21、 下端设有膨胀节下法兰 20， 球面座 7的底端 设有球面座下法兰 18， 球面体 8的顶端设有球面体上法兰 19， 固定 进水管 2的上端设有固定进水管法兰 22， 旋转输水管 3的下端设有 旋转输水管法兰 23; 膨胀节 6的上端通过膨胀节上法兰 21、 球面座 下法兰 18及螺栓与球面座 7的底端固定连接， 膨胀节 6的下端通过 膨胀节下法兰 20、 固定进水管法兰 22及螺栓与固定进水管 2的上端 固定连接； 旋转输水管 3通过旋转输水管法兰 23、 球面体上法兰 19 和螺栓与球面体 8固定连接。并且，为使密封压盖 14能够顺利安装， 球面体上法兰 19和旋转输水管法兰 23的外径应小于密封压盖 14的 内径。 An expansion joint 6 is further disposed between the fixed inlet pipe 2 and the spherical seat 7, the upper end of the expansion joint 6 is provided with an expansion joint upper flange 21, the lower end is provided with an expansion joint lower flange 20, and the bottom end of the spherical seat 7 is provided with a spherical surface. The lower flange 18, the top end of the spherical body 8 is provided with a spherical upper flange 19, the upper end of the fixed inlet pipe 2 is provided with a fixed inlet pipe flange 22, and the lower end of the rotating water pipe 3 is provided with a rotating water supply pipe flange 23; The upper end of the expansion joint 6 is fixedly connected to the bottom end of the spherical seat 7 through the expansion joint upper flange 21, the spherical seat lower flange 18 and the bolt, and the lower end of the expansion joint 6 passes through the expansion joint lower flange 20 and the fixed inlet water pipe flange 22 And the bolt is fixedly connected to the upper end of the fixed inlet pipe 2; the rotary water pipe 3 is fixedly connected to the spherical body 8 through the rotating water pipe flange 23, the spherical upper flange 19 and the bolt. Further, in order to enable the sealing gland 14 to be smoothly mounted, the outer diameter of the spherical upper flange 19 and the rotary water delivery pipe flange 23 should be smaller than the inner diameter of the sealing gland 14.
为延长密封装置的使用寿命和维修更换周期， 减少漏水量， 球面 座 7、 球面体 8的表面经过精密磨削加工后镀硬铬以提高表面硬度并 进行耐磨性处理， 达到配合精密、 耐磨、 耐腐蚀不泄漏的目的。 使用过程中， 固定进水管 2、 膨胀节 6及球面座 7均固定不动， 旋转 输水管 3带动球面体 8做旋转运动。在水泵作用下， 灌溉用水经固定 进水管 2、 膨胀节 6、 通水孔 9、 通水孔 10、 旋转输水管 3到达设在 圆形喷灌机桁架上的喷头， 实现喷灌。在此过程中， 通过球面座 7与 球面体 8 之间相互挤压形成的具有微小间隙的球形接触面实现基础 密封， 下球面密封圈 12、 上球面密封圈 17及密封调整垫圈 15同时
起到进一歩密封的作用， 最大程度防止漏水。 且当上球面密封圈 17 发生磨损、与球面体 8间形成间隙时， 可根据磨损量更换厚度较小的 密封调整垫圈 15， 实现上球面密封圈 17磨损间隙的自动补偿。
In order to prolong the service life of the sealing device and repair and replacement cycle, and reduce the amount of water leakage, the surface of the spherical seat 7 and the spherical body 8 is subjected to precision grinding and then hard chrome plating to improve the surface hardness and wear resistance treatment, so as to achieve precision and resistance. Grinding, corrosion resistance, no leakage. During use, the fixed inlet pipe 2, the expansion joint 6 and the spherical seat 7 are fixed, and the rotating water pipe 3 drives the spherical body 8 to perform a rotary motion. Under the action of the water pump, the irrigation water is passed through the fixed inlet pipe 2, the expansion joint 6, the water passing hole 9, the water passing hole 10, and the rotating water pipe 3 to reach the nozzle provided on the truss of the circular sprinkler to realize sprinkler irrigation. In this process, the base seal is realized by the spherical contact surface formed by the squeeze between the spherical seat 7 and the spherical body 8 with a small gap, and the lower spherical seal ring 12, the upper spherical seal ring 17 and the seal adjusting washer 15 are simultaneously It acts as a seal to minimize water leakage. When the upper spherical seal ring 17 wears and forms a gap with the spherical body 8, the seal adjusting washer 15 having a small thickness can be replaced according to the amount of wear, thereby realizing automatic compensation of the wear gap of the upper spherical seal ring 17.
Claims
1. 一种圆形喷灌机中心支轴密封装置， 包括由固定进水管和旋转输 水管构成的中心支轴， 其特征在于， 所述固定进水管与旋转输水管之 间设有旋转球形密封组件，所述旋转球形密封组件包括相适配的球面 座和球面体， 所述球面座和球面体的中心处开设有相连通的通水孔， 所述球面座的内侧设有环形的第一密封槽，所述第一密封槽内安装有 下球面密封圈， 且所述下球面密封圈相对球面体的一侧为弧形面； 所 述球面座底端与固定进水管固定连接，所述球面体顶端与旋转输水管 固定连接。 1. A circular pivoting machine central fulcrum sealing device comprising a central fulcrum formed by a fixed inlet pipe and a rotating water pipe, wherein a rotating spherical seal assembly is arranged between the fixed inlet pipe and the rotating water pipe The rotating spherical seal assembly includes a matching spherical seat and a spherical body, and the center of the spherical seat and the spherical body is provided with a communicating water passage hole, and the inner side of the spherical seat is provided with an annular first seal a groove, a lower spherical sealing ring is mounted in the first sealing groove, and a side of the lower spherical sealing ring is opposite to the spherical body; the bottom end of the spherical seat is fixedly connected with the fixed inlet pipe, the spherical surface The top of the body is fixedly connected to the rotating water pipe.
2.根据权利要求 1所述的一种圆形喷灌机中心支轴密封装置， 其特征 在于， 所述球面座顶端设有球面座上法兰， 所述球面座上法兰的上方 设有环形的密封压盖；所述密封压盖的内侧面设有环形的第二密封槽， 所述第二密封槽内安装有上球面密封圈，且所述上球面密封圈相对球 面体的一侧为弧形面；所述球面座上法兰与密封压盖之间通过螺栓固 定连接。 2 . The center pivot sealing device of a circular sprinkler according to claim 1 , wherein a top end of the spherical seat is provided with a spherical seat upper flange, and a upper ring of the spherical seat is provided with a ring a sealing gland; the inner side of the sealing gland is provided with an annular second sealing groove, the second sealing groove is provided with an upper spherical sealing ring, and the side of the upper spherical sealing ring relative to the spherical body is a curved surface; the upper flange of the spherical seat and the sealing gland are fixedly connected by bolts.
3. 根据权利要求 2所述的一种圆形喷灌机中心支轴密封装置， 其特 征在于， 所述第二密封槽的内壁具有一 45度角的倾斜面。 3. A circular sprinkler central fulcrum seal according to claim 2, wherein the inner wall of the second seal groove has an inclined surface at an angle of 45 degrees.
4. 根据权利要求 2所述的一种圆形喷灌机中心支轴密封装置， 其特 征在于， 所述球面座上法兰与密封压盖之间设有密封调整垫圈， 所述 球面座上法兰、 密封压盖及密封调整垫圈之间通过螺栓固定连接。 The central pivot sealing device for a circular sprinkler according to claim 2, wherein a sealing adjustment washer is disposed between the upper flange of the spherical seat and the sealing gland, and the spherical seat is mounted thereon The flanges of the flange, the sealing gland and the sealing adjustment washer are fixed by bolts.
5. 根据权利要求 1或 2所述的一种圆形喷灌机中心支轴密封装置， 其特征在于， 所述球面座顶端开口与球面体的球心处于同一平面。The central pivot sealing device for a circular sprinkler according to claim 1 or 2, wherein the spherical seat top opening is in the same plane as the spherical center of the spherical body.
6. 根据权利要求 1或 2所述的一种圆形喷灌机中心支轴密封装置， 其特征在于， 所述球面座顶端开口所在平面稍高于球面体的球心。 The central pivot sealing device for a circular sprinkler according to claim 1 or 2, wherein the plane of the top end opening of the spherical seat is slightly higher than the spherical center of the spherical body.
7. 根据权利要求 1所述的一种圆形喷灌机中心支轴密封装置， 其特
征在于， 所述固定进水管与球面座之间设有膨胀节， 所述膨胀节的上 端与球面座的底端固定连接，膨胀节的下端与固定进水管的上端固定 连接。
7. The circular pivoting machine center pivot sealing device according to claim 1, wherein An expansion joint is disposed between the fixed inlet pipe and the spherical seat, and an upper end of the expansion joint is fixedly connected to a bottom end of the spherical seat, and a lower end of the expansion joint is fixedly connected to an upper end of the fixed inlet pipe.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310363974.1 | 2013-08-19 | ||
| CN201310363974.1A CN103423535B (en) | 2013-08-19 | 2013-08-19 | A kind of center pivot sprinkling machine center pivot sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015024271A1 true WO2015024271A1 (en) | 2015-02-26 |
Family
ID=49648695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2013/082258 WO2015024271A1 (en) | 2013-08-19 | 2013-08-26 | Sealing apparatus for central pivot of circular sprinkling machine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN103423535B (en) |
| AU (1) | AU2013101705A4 (en) |
| WO (1) | WO2015024271A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109874476B (en) * | 2019-04-10 | 2021-10-26 | 山东农业工程学院 | Three-dimensional adjustable spray head for fruit tree spraying equipment |
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| CN2221680Y (en) * | 1995-01-24 | 1996-03-06 | 曹宗瑞 | Bearing contact efficient sealing structure |
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| CN202812560U (en) * | 2012-09-22 | 2013-03-20 | 山东飞越机械有限公司 | Half-ring flange type spherical rotary joint |
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2013
- 2013-08-19 CN CN201310363974.1A patent/CN103423535B/en active Active
- 2013-08-26 WO PCT/CN2013/082258 patent/WO2015024271A1/en active Application Filing
- 2013-08-26 AU AU2013101705A patent/AU2013101705A4/en not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR982411A (en) * | 1943-06-17 | 1951-06-11 | Messier Sa | Seals on joint faces, ball joints and others |
| US4012060A (en) * | 1975-03-31 | 1977-03-15 | Reneau Bobby J | Ball flex union |
| CN201496714U (en) * | 2009-09-08 | 2010-06-02 | 泰州市新方圆补偿器制造有限公司 | High temperature resistant corrugated expansion joint |
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| CN102563254A (en) * | 2012-03-28 | 2012-07-11 | 天津佩霖分析仪器有限公司 | Novel rotary joint |
| CN202868155U (en) * | 2012-09-07 | 2013-04-10 | 江苏中兴水务有限公司 | Spherical universal joint swing arm-type connecting pipe of water intaking pump vessel |
| CN203453675U (en) * | 2013-08-19 | 2014-02-26 | 甘肃华瑞农业股份有限公司 | Sealing device of central supporting shaft of center pivot sprinkling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103423535A (en) | 2013-12-04 |
| AU2013101705A4 (en) | 2015-01-22 |
| CN103423535B (en) | 2016-12-28 |
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