CN221400886U - A high-pressure coal slurry pump piston rod that is easy to fasten - Google Patents
A high-pressure coal slurry pump piston rod that is easy to fasten Download PDFInfo
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- CN221400886U CN221400886U CN202323036320.6U CN202323036320U CN221400886U CN 221400886 U CN221400886 U CN 221400886U CN 202323036320 U CN202323036320 U CN 202323036320U CN 221400886 U CN221400886 U CN 221400886U
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- enclasping
- slurry pump
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Abstract
本实用新型公开了一种便于紧固的高压煤浆泵活塞杆，活塞杆安装在液压缸内，液压缸两端均设置有密封；所述活塞杆的一端与曲轴箱的十字头部件螺纹连接，所述活塞杆的该端经紧固环锁紧，所述活塞杆的另一端安装有用于紧固的抱紧装置；通过驱动抱紧装置进而令活塞杆转动，从而紧固活塞杆与曲轴箱的十字头部件之间的连接。优点是：相比于使用随机工具紧固活塞杆的方法，使用抱紧装置在检修时不需要将活塞杆伸入液压缸内部，也不需要放尽活塞缸内部的润滑油、拆下液压缸末端大盖，只需拆除末端活塞杆的保护套，不仅操作简单，减轻了检修工作量，也节约了检修成本。
The utility model discloses a high-pressure coal slurry pump piston rod that is easy to fasten. The piston rod is installed in a hydraulic cylinder, and seals are provided at both ends of the hydraulic cylinder. One end of the piston rod is threadedly connected to the crosshead component of the crankcase, and the end of the piston rod is locked by a fastening ring. The other end of the piston rod is installed with a clamping device for fastening. The piston rod is rotated by driving the clamping device, thereby fastening the connection between the piston rod and the crosshead component of the crankcase. The advantage is that compared with the method of fastening the piston rod with random tools, the use of the clamping device does not require the piston rod to be extended into the hydraulic cylinder during maintenance, nor does it require the lubricating oil inside the piston cylinder to be drained, and the large cover at the end of the hydraulic cylinder to be removed. It is only necessary to remove the protective cover of the end piston rod, which is not only simple to operate, but also reduces the maintenance workload and saves maintenance costs.
Description
Technical Field
The utility model relates to the technical field of coal chemical industry, in particular to a high-pressure coal slurry pump piston rod convenient to fasten.
Background
The high-pressure coal slurry pump is a key device for gasifying the coal water slurry, and belongs to a reciprocating pump, wherein a piston rod is in a working condition of reciprocating alternating load in a long-term operation process. The piston rod is connected with the cross head and belongs to threaded connection, and a locking device is arranged, but the high-pressure coal slurry pump operates for a period (generally about 2 months), the piston rod and the threads of the cross head are loosened, a random tool of the high-pressure coal slurry pump is provided with a piston rod fastening tool, the random tool fastening piston rod is required to extend the piston rod into a hydraulic cylinder, so that lubricating oil in the piston cylinder is required to be discharged, a large hydraulic cylinder cover is detached, and the maintenance cost and the workload are increased. In order to ensure the long-period stable operation of the high-pressure coal slurry pump, the piston rod needs to be fastened once after each operation period, and the operation is complex, so that the high-pressure coal slurry pump has important significance in terms of convenient maintenance and reduction of maintenance cost and long-period stable operation of the high-pressure coal slurry pump.
Disclosure of utility model
The utility model aims to provide a high-pressure coal slurry pump piston rod convenient to fasten, so that the problems in the prior art are solved.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
A piston rod of the high-pressure coal slurry pump convenient to fasten is arranged in a hydraulic cylinder, and both ends of the hydraulic cylinder are provided with seals; one end of the piston rod is in threaded connection with a cross head part of the crankcase, the end of the piston rod is locked through a fastening ring, and a holding device for fastening is arranged at the other end of the piston rod; the piston rod is rotated by driving the hugging device, so that the connection between the piston rod and the cross head part of the crankcase is fastened.
Preferably, the enclasping device is sleeved at one end of the piston rod, and comprises an upper enclasping semi-ring and a lower enclasping semi-ring which are identical in shape, the upper enclasping semi-ring and the lower enclasping semi-ring are attached to the outer wall of the piston rod along the circumferential direction of the piston rod, and the upper enclasping semi-ring and the lower enclasping semi-ring are fixedly connected to form the annular enclasping device.
Preferably, both ends of the upper hug semi-ring, which are close to the lower hug semi-ring, are provided with upper connecting plates extending outwards along the radial direction of the upper hug semi-ring, and both ends of the lower hug semi-ring, which are close to the upper hug semi-ring, are provided with lower connecting plates extending outwards along the radial direction of the lower hug semi-ring; the upper connecting plates and the lower connecting plates on the corresponding sides are correspondingly connected, and a certain gap exists between the upper connecting plates and the lower connecting plates on the corresponding sides.
Preferably, the clasping device further comprises a fastener; the corresponding positions of the upper connecting plate and the lower connecting plate are respectively provided with a connecting hole, and a fastener penetrates through the connecting holes on the corresponding upper connecting plate and the lower connecting plate to enable the upper hugging semi-ring and the lower hugging semi-ring to be fixedly connected.
Preferably, a protective layer is arranged between the inner wall of the enclasping device and the outer wall of the piston rod.
Preferably, the protective layer is a 1mm copper sheet.
Preferably, the hugging semi-ring and the connecting plate are integrally formed, or are respectively and independently arranged and fixedly connected.
Preferably, the fastener is a hexagon head bolt and a hexagon head nut.
The beneficial effects of the utility model are as follows: 1. because the connecting end of the cross head part is provided with a seal, the space is narrow and the maintenance operation is inconvenient, and the holding device is arranged at the other end of the piston rod, thereby facilitating the maintenance operation. 2. Compared with the method for fastening the piston rod by using a random tool, the enclasping device is used, when overhauling is carried out, the piston rod does not need to extend into the hydraulic cylinder, lubricating oil in the piston cylinder does not need to be discharged, the large end cover of the hydraulic cylinder is removed, and only the protective sleeve of the end piston rod is removed, so that the operation is simple, the overhauling workload is reduced, and the overhauling cost is saved. 3. The piston rod is connected with the cross head part of the crankcase through threads, the piston rod is installed in the hydraulic cylinder, and the two ends of the hydraulic cylinder are provided with seals, so that the sealing performance of the high-pressure coal slurry pump is ensured.
Drawings
FIG. 1 is a schematic installation diagram of a piston rod of a high-pressure coal slurry pump in an embodiment of the utility model;
fig. 2 is a schematic structural view of a clasping device in accordance with an embodiment of the present utility model.
In the figure: 1. a piston rod; 2. a piston body; 3. a fastening ring; 4. a cross head member; 5. a clasping device; 51. tightly holding the semi-ring; 52. a lower hug semi-ring; 53. an upper connecting plate; 54. a lower connecting plate; 55. a connection hole; 56. a fastener.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description is presented by way of example only and is not intended to limit the utility model.
As shown in fig. 1, in this embodiment, a high-pressure coal slurry pump piston rod convenient for fastening is provided, a piston rod 1 is installed in a hydraulic cylinder, both ends of the hydraulic cylinder are provided with seals, a piston body 2 is installed on the piston rod 1, one end of the piston rod 1 is in threaded connection with a cross head part 4 of a crankcase, the end of the piston rod 1 is used for locking the connection between the two through a fastening ring 3, and a holding device 5 used for fastening is installed at the other end of the piston rod 1; the connection between the piston rod 1 and the cross-head part 4 of the crankcase is tightened by driving the hugging device 5 and thereby rotating the piston rod 1.
The two ends of the upper hug semi-ring 51, which are close to the lower hug semi-ring 52, are respectively provided with an upper connecting plate 53 which extends outwards along the radial direction of the upper hug semi-ring, and the two ends of the lower hug semi-ring 52, which are close to the upper hug semi-ring 51, are respectively provided with a lower connecting plate 54 which extends outwards along the radial direction of the lower hug semi-ring; the upper and lower connection plates 53 and 54 of the respective sides are correspondingly connected, with a certain gap between the upper and lower connection plates 53 and 54 of the respective sides.
The connecting plate and the hugging semi-rings can be integrally formed, and also can be respectively and independently arranged and fixedly connected, and can be specifically selected according to actual conditions.
The clasping device 5 further comprises a fastener 56; the corresponding positions of the upper connecting plate 53 and the lower connecting plate 54 are respectively provided with a connecting hole 55, and a fastening piece 56 passes through the connecting holes 55 on the corresponding upper connecting plate 53 and the lower connecting plate 54 to fixedly connect the upper hugging semi-ring 51 and the lower hugging semi-ring 52. The fasteners 56 may be hex head bolts and nuts, or other components capable of achieving fastening, as may be practical.
The quantity of connecting holes 55 on each connecting plate can be set up according to actual conditions, as shown in fig. 2, be provided with two connecting holes 55 on the connecting plate, pass corresponding connecting hole 55 respectively through two fastener 56 and make and hold up semi-ring 51 and lower semi-ring 52 fixed connection tightly, two connecting holes 55 can guarantee to hold tightly device 5 and piston rod 1 between have sufficient cohesion force, when driving cohesion device 5, it can be smoothly with moment of torsion transmission for piston rod 1, reaches the effect of fastening piston rod 1.
The diameter of the piston rod 1 is 70mm, the diameters of the upper hug semi-ring 51 and the lower hug semi-ring 52 are required to be ensured to be 70mm, a gap of 4mm exists between the joint surfaces of the upper hug semi-ring 51 and the lower hug semi-ring 52, and the gap is formed by tightening the fastener 56 when the fastener 56 is used for connecting the upper hug semi-ring 51 and the lower hug semi-ring 52, so that the hug device 5 can achieve high-degree hug with the piston rod 1, and the effect of transmitting torque is achieved.
In this embodiment, in order to avoid the situation that the piston rod 1 is scratched due to friction collision between the enclasping device 5 and the piston rod 1 in the process of installing the enclasping device 5 and fastening the piston rod 1, a protective layer is disposed between the inner wall of the enclasping device 5 and the outer wall of the piston rod 1, and the protective layer separates the enclasping device 5 and the piston rod 1, so that the enclasping device 5 and the piston rod 1 are in indirect contact with each other, and the scratch to the piston rod 1 is avoided. The protective layer is convenient to detach, and when the protective layer is damaged, the protective layer can be replaced by a new protective layer.
In this embodiment, the protective layer is a 1mm copper sheet.
When the enclasping device 5 enclasps with the piston rod 1, the large pipe tongs are adopted to clamp the enclasping device 5 to drive the enclasping device 5 to rotate, and the enclasping device 5 drives the piston rod 1 to rotate together, so that the fastening connection between the piston rod 1 and the cross head part 4 of the lower crank case is realized.
By adopting the technical scheme disclosed by the utility model, the following beneficial effects are obtained:
The utility model provides a high-pressure coal slurry pump piston rod convenient to fasten, which is convenient to overhaul because the connecting end of a cross head part is provided with a seal, the space is narrow, and a holding device is arranged at the other end of the piston rod. Compared with the method for fastening the piston rod by using a random tool, the enclasping device is used, when overhauling is carried out, the piston rod does not need to extend into the hydraulic cylinder, lubricating oil in the piston cylinder does not need to be discharged, the large end cover of the hydraulic cylinder is removed, and only the protective sleeve of the end piston rod is removed, so that the operation is simple, the overhauling workload is reduced, and the overhauling cost is saved. The piston rod is connected with the cross head part of the crankcase through threads, the piston rod is installed in the hydraulic cylinder, and the two ends of the hydraulic cylinder are provided with seals, so that the sealing performance of the high-pressure coal slurry pump is ensured.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which is also intended to be covered by the present utility model.
Claims (8)
1. The utility model provides a high pressure coal slurry pump piston rod convenient to fastening which characterized in that: the piston rod is arranged in the hydraulic cylinder, and both ends of the hydraulic cylinder are provided with seals; one end of the piston rod is in threaded connection with a cross head part of the crankcase, the end of the piston rod is locked through a fastening ring, and a holding device for fastening is arranged at the other end of the piston rod; the piston rod is rotated by driving the hugging device, so that the connection between the piston rod and the cross head part of the crankcase is fastened.
2. The conveniently fastened piston rod of the high-pressure coal slurry pump according to claim 1, wherein: the enclasping device is sleeved at one end of the piston rod and comprises an upper enclasping semi-ring and a lower enclasping semi-ring which are identical in shape, the upper enclasping semi-ring and the lower enclasping semi-ring are attached to the outer wall of the piston rod along the circumferential direction of the piston rod, and the upper enclasping semi-ring and the lower enclasping semi-ring are fixedly connected to form the annular enclasping device.
3. The conveniently fastened piston rod of the high-pressure coal slurry pump according to claim 2, wherein: the two ends of the upper hugging semi-ring, which are close to the lower hugging semi-ring, are respectively provided with an upper connecting plate extending outwards along the radial direction of the upper hugging semi-ring, and the two ends of the lower hugging semi-ring, which are close to the upper hugging semi-ring, are respectively provided with a lower connecting plate extending outwards along the radial direction of the lower hugging semi-ring; the upper connecting plates and the lower connecting plates on the corresponding sides are correspondingly connected, and a certain gap exists between the upper connecting plates and the lower connecting plates on the corresponding sides.
4. The high pressure coal slurry pump piston rod convenient to fasten according to claim 3, wherein: the enclasping device also comprises a fastener; the corresponding positions of the upper connecting plate and the lower connecting plate are respectively provided with a connecting hole, and a fastener penetrates through the connecting holes on the corresponding upper connecting plate and the lower connecting plate to enable the upper hugging semi-ring and the lower hugging semi-ring to be fixedly connected.
5. The conveniently fastened piston rod of the high-pressure coal slurry pump according to claim 2, wherein: a protective layer is arranged between the inner wall of the enclasping device and the outer wall of the piston rod.
6. The conveniently fastened piston rod of the high-pressure coal slurry pump according to claim 5, wherein: the protective layer is a 1mm copper sheet.
7. The high pressure coal slurry pump piston rod convenient to fasten according to claim 3, wherein: the hug semi-ring and the connecting plate are integrally formed, or are respectively and independently arranged and fixedly connected.
8. The conveniently fastened piston rod of the high-pressure coal slurry pump according to claim 4, wherein: the fasteners are hexagon head bolts and hexagon head nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323036320.6U CN221400886U (en) | 2023-11-09 | 2023-11-09 | A high-pressure coal slurry pump piston rod that is easy to fasten |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323036320.6U CN221400886U (en) | 2023-11-09 | 2023-11-09 | A high-pressure coal slurry pump piston rod that is easy to fasten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221400886U true CN221400886U (en) | 2024-07-23 |
Family
ID=91914082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323036320.6U Active CN221400886U (en) | 2023-11-09 | 2023-11-09 | A high-pressure coal slurry pump piston rod that is easy to fasten |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221400886U (en) |
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2023
- 2023-11-09 CN CN202323036320.6U patent/CN221400886U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20260224 Address after: 277527 Shandong city of Zaozhuang province Tengzhou City Stone Town resident (Stone Industrial Park) Patentee after: Lianhong New Materials Technology Co.,Ltd. Country or region after: China Address before: 277527 Mushi Town, Tengzhou City, Zaozhuang City, Shandong Province (resident) Patentee before: Lianhong (Shandong) Chemical Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |