CN218235678U - Hydraulic cylinder of medium-speed coal mill - Google Patents
Hydraulic cylinder of medium-speed coal mill Download PDFInfo
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- CN218235678U CN218235678U CN202222069685.8U CN202222069685U CN218235678U CN 218235678 U CN218235678 U CN 218235678U CN 202222069685 U CN202222069685 U CN 202222069685U CN 218235678 U CN218235678 U CN 218235678U
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Abstract
The utility model discloses a medium speed pulverizer pneumatic cylinder relates to thermal power plant's fuel powder process equipment technical field, and main aim at solves piston pneumatic cylinder head and piston rod and is connected uide bushing department oil leak or oil leakage problem. The main technical scheme is that the device comprises a piston hydraulic cylinder; the energy accumulator is fixed on the piston hydraulic cylinder body through a hoop; the variable loading valve block is connected with the oil port of the energy accumulator and is fixed at the oil port of the rod cavity of the piston hydraulic cylinder through a fastener; the overflow valve is fixed at the upper side mounting hole of the variable loading valve block; and an oil inlet hole of the oil drainage way is positioned in a mounting groove of a second sealing ring counted from the outer side at the positions of a mounting guide sleeve and a sealing ring which are connected with the cylinder head of the piston hydraulic cylinder and the piston rod, and corresponds to an oil leakage drainage point, an oil outlet hole of the oil drainage way is connected with an oil drainage hole of the overflow valve, and the oil drainage hole of the overflow valve is connected with an oil tank through an external pipeline.
Description
Technical Field
The utility model relates to a fuel powder process equipment technical field of thermal power plant especially relates to a medium speed pulverizer pneumatic cylinder.
Background
The medium-speed coal mill is efficient raw coal pulverizing equipment, belongs to a wheel-type coal mill in form, and realizes pulverizing operation by circularly rolling and rolling raw coal stacked on a grinding disc at a wheel-shaped grinding roller and a bowl-mounted grinding disc relatively, the material grinding force between the grinding roller and the grinding disc is realized by a loading force hydraulic system applying force on a loading frame through three hydraulic cylinders and finally transmitting the force on the grinding roller, the hydraulic system provides variable acting force and reacting force for the medium-speed coal mill, and a variable loading damping system is formed in the upper cavity and the lower cavity of a piston of the hydraulic cylinder through the hydraulic system.
The variable loading hydraulic cylinder in the prior art mainly comprises a double-acting piston hydraulic cylinder 1, a variable loading valve block 2, an accumulator 3 and a connecting pipeline. The connection mode is as shown in figure 1, an energy accumulator 3 is fixed on a hydraulic cylinder body 1 through a hoop, an oil port of the energy accumulator 3 is connected with a variable loading valve block 2 through a flange and a pipeline, the variable loading valve block 2 is fixed on an oil port of a rod cavity of a double-acting piston hydraulic cylinder 1 through a fastener, and an overflow valve 4 is fixed in an upper side mounting hole of the variable loading valve block 2. The oil leakage and leakage point 5 is arranged at the position of a guide sleeve connecting the piston rod with the cylinder head of the double-acting piston hydraulic cylinder body. The schematic diagram of these parts connected is shown in fig. 2.
The piston hydraulic cylinder in the prior art adopts a double-acting piston cylinder, and due to the reason of working load, the hydraulic cylinder can do continuous cyclic reciprocating oscillating motion within a certain distance range within a stroke range, and the hydraulic cylinder has long working time all day, belongs to a working system of a whole day system, and has long working time and a movement mode which easily cause premature wear of a sealing element of the hydraulic cylinder to generate a gap, so that the problem of oil leakage or oil seepage at a guide sleeve of the hydraulic cylinder is caused, and the pollution to equipment and environment is caused.
Disclosure of Invention
In view of this, the utility model provides a medium speed pulverizer pneumatic cylinder, main aim at solve piston pneumatic cylinder head and piston rod and be connected uide bushing department oil leak or oil impregnate problem.
In order to achieve the above object, the utility model mainly provides the following technical scheme:
the embodiment of the utility model provides a medium speed coal pulverizer pneumatic cylinder. It includes:
a piston hydraulic cylinder;
the energy accumulator is fixed on the piston hydraulic cylinder body through a hoop;
the variable loading valve block is connected with the oil port of the energy accumulator and is fixed at the oil port of the rod cavity of the piston hydraulic cylinder through a fastener;
the overflow valve is fixed at the upper side mounting hole of the variable loading valve block;
and the oil inlet hole of the oil drainage oil path is positioned in a mounting groove of a second sealing ring counted from the outer side at the positions of a mounting guide sleeve and a sealing ring which are connected with the cylinder head of the piston hydraulic cylinder and the piston rod, and corresponds to an oil leakage drainage point, the oil outlet hole of the oil drainage oil path is connected with one end of an oil drainage hole channel of the overflow valve, and the other end of the oil drainage hole channel of the overflow valve is connected with an oil tank through an external pipeline.
As mentioned above, the oil drainage path includes the oil drainage hole connected to the oil inlet, and the oil drainage inclined hole connected to the oil drainage hole and the oil outlet respectively;
one end of the oil drainage hole channel is positioned in a mounting groove of a second sealing ring counted from the outer side at the positions of a mounting guide sleeve and a sealing ring which are connected with the piston rod at the cylinder head of the piston hydraulic cylinder and is connected with the oil inlet hole, and the other end of the oil drainage hole channel is positioned on the mounting surface of the cylinder head of the piston hydraulic cylinder and the variable loading valve block and is connected with the oil drainage inclined hole channel;
the oil drainage inclined hole is located on a joint surface of the variable loading valve block and the cylinder head of the piston hydraulic cylinder, one end of the oil drainage inclined hole is connected with the other end of the oil drainage hole, and the other end of the oil drainage inclined hole is connected with the oil outlet.
As described above, the oil drain hole passage is machined on the circumferential surface of the oil inlet hole diameter by using a rotary machine.
As mentioned above, after the oil drainage duct is processed, the fabrication hole for additional processing of the oil drainage duct is plugged by the plug.
As mentioned above, a dust cover is mounted on the outside of the piston rod.
Borrow by above-mentioned technical scheme, the utility model discloses an intermediate speed coal pulverizer pneumatic cylinder has following advantage at least:
the utility model discloses a medium speed pulverizer pneumatic cylinder is through setting up the draining oil circuit, makes the fluid that collects from the oil leak oil drain point through being located piston pneumatic cylinder head and become the draining oil circuit in the loading valve block and flow to overflow valve draining port pore, make the fluid of revealing loop through overflow valve draining port pore, external pipeline finally get back to the oil tank, reach the hydraulic oil leakage problem of the during operation draining point of the installation uide bushing department that effectively solves piston pneumatic cylinder head and piston rod and be connected, and then solve equipment and environmental pollution's problem.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
FIG. 1 is a first schematic structural diagram of a hydraulic cylinder of a medium speed coal mill in the prior art;
FIG. 2 is a second schematic structural diagram of a hydraulic cylinder of a medium speed coal mill in the prior art;
FIG. 3 is a schematic diagram of the operation of a hydraulic cylinder of a prior art medium speed coal mill;
FIG. 4 is a schematic structural view of the hydraulic cylinder of the medium speed coal mill of the present invention;
FIG. 5 is a schematic view of the oil drainage path of the present invention;
fig. 6 is the working principle diagram of the hydraulic cylinder of the medium speed coal mill of the utility model.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 4, an embodiment of the present invention provides a medium speed coal mill hydraulic cylinder, which includes: the hydraulic system comprises a piston hydraulic cylinder 1, an energy accumulator 2, a variable loading valve block 3, an overflow valve 4 and an oil drainage oil path 6.
As shown in fig. 4 to 6, the accumulator 2 is fixed to the cylinder body of the piston cylinder 1 by a bracket. The variable loading valve block 3 is connected with the oil port of the energy accumulator 2 and fixed at the oil port 11 of the rod cavity of the piston hydraulic cylinder 1 through a fastener, and specifically, the oil port of the energy accumulator 2 is connected with the energy accumulator mounting port 31 of the variable loading valve block 3 through a flange and a pipeline. And the overflow valve 4 is fixed at the upper side mounting hole of the variable loading valve block 3. And an oil inlet 61 of the oil drainage path 6 is positioned in a mounting groove of a second sealing ring counted from the outer side at the position of a mounting guide sleeve and a sealing ring which are connected with the piston rod 13 of the piston hydraulic cylinder head 12, and corresponds to an oil leakage and drainage point 5, an oil outlet 62 of the oil drainage path 6 is connected with an overflow valve drainage port hole 41, and the overflow valve drainage port hole 41 is connected with an oil tank through an external pipeline. Specifically, the oil drainage path 6 includes an oil drainage channel 63 connected to the oil inlet 61, and an oil drainage inclined channel 64 connected to the oil drainage channel 63 and the oil outlet 62, one end of the oil drainage channel 63 is located in a mounting groove of a second sealing ring counted from the outside of the mounting guide sleeve and the sealing ring position where the piston-hydraulic cylinder head 12 is connected to the piston rod 13, and is connected to the oil inlet 61, and the other end is located on the mounting surface of the piston-hydraulic cylinder head 11 and the variable loading valve block 3, and is connected to the oil drainage inclined channel 64; the oil drainage inclined duct 64 is located on a joint surface of the variable loading valve block 3 and the piston hydraulic cylinder head 12, one end of the oil drainage inclined duct 64 is connected with the other end of the oil drainage duct 63, and the other end of the oil drainage inclined duct 64 is connected with the oil outlet 62. In the present invention, the oil drainage hole 63 is machined by a turning machine on the circumferential surface of the diameter of the oil inlet 61. After the oil drainage duct 63 is processed, the fabrication holes for additionally processing the oil drainage duct 63 are plugged by using the screw plugs. The shape of draining pore 63 can be set to inclined pore or sharp pore according to actual need, and is specific the embodiment of the utility model provides a do not restrict this. In the present invention, the dust cover 7 is installed outside the piston rod 12.
The oil drainage channel and the oil drainage inclined hole prop body are processed as follows: and machining an oil inlet hole in a mounting groove of a second sealing ring from the outer side at the position of a mounting guide sleeve and a sealing ring which are connected with the cylinder head of the piston hydraulic cylinder and the piston rod, machining an oil drainage hole channel on the circumferential surface of the hole diameter of the oil inlet hole by using a rotary machine, ending the oil drainage hole channel to the mounting surfaces of the cylinder head of the piston hydraulic cylinder and the variable loading valve block, plugging a process hole for additionally machining the oil drainage hole channel by using a plug after machining is finished, machining an oil drainage inclined hole channel on the joint surface of the variable loading valve block and the cylinder head of the piston hydraulic cylinder to be connected with an oil outlet, and connecting the oil outlet with an oil drainage overflow valve hole channel.
The utility model discloses specific work flow does: when the piston hydraulic cylinder works, oil brought out by the frequent telescopic oscillation action of the piston rod is collected in the groove of the second sealing ring of the guide sleeve from an oil leakage and oil discharge point, and after the oil reaches a certain amount, the oil flows to an oil discharge hole channel of the overflow valve through an oil discharge oil channel in the cylinder head of the piston hydraulic cylinder and the variable loading valve block, and the oil discharge hole channel of the overflow valve is finally connected to the oil tank through an external pipeline. The leaked oil can also flow back to the oil tank through the oil drainage oil way, so that the problem of leakage of hydraulic oil at an oil leakage and oil leakage point when the piston hydraulic cylinder guide sleeve works is effectively solved. The utility model is suitable for a two effect piston pneumatic cylinders.
The utility model discloses a medium speed pulverizer pneumatic cylinder is through setting up the draining oil circuit, and the fluid that makes to let out the oil point from the oil leak and collect is through being located piston pneumatic cylinder head and become the draining oil circuit in the load valve block and flow to overflow valve drain port pore, make the fluid of revealing loop through overflow valve drain port pore, external pipeline finally get back to the oil tank, reach the hydraulic oil leakage problem of the during operation draining point of the installation uide bushing department that effectively solves piston pneumatic cylinder head and piston rod and be connected, and then solve equipment and environmental pollution's problem.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a medium speed pulverizer pneumatic cylinder which characterized in that: it includes:
a piston hydraulic cylinder;
the energy accumulator is fixed on the piston hydraulic cylinder body through a hoop;
the variable loading valve block is connected with the oil port of the energy accumulator and is fixed at the oil port of the rod cavity of the piston hydraulic cylinder through a fastener;
the overflow valve is fixed at the upper side mounting hole of the variable loading valve block;
and the oil inlet hole of the oil drainage oil path is positioned in a mounting groove of a second sealing ring counted from the outer side at the positions of a mounting guide sleeve and a sealing ring which are connected with the cylinder head of the piston hydraulic cylinder and the piston rod, and corresponds to an oil leakage drainage point, the oil outlet hole of the oil drainage oil path is connected with one end of an oil drainage hole channel of the overflow valve, and the other end of the oil drainage hole channel of the overflow valve is connected with an oil tank through an external pipeline.
2. The medium speed pulverizer hydraulic cylinder of claim 1,
the oil drainage oil path comprises an oil drainage hole passage connected with the oil inlet hole and an oil drainage inclined hole passage respectively connected with the oil drainage hole passage and the oil outlet hole;
one end of the oil drainage hole channel is positioned in a mounting groove of a second sealing ring counted from the outer side at the positions of a mounting guide sleeve and a sealing ring which are connected with the piston rod at the cylinder head of the piston hydraulic cylinder and is connected with the oil inlet hole, and the other end of the oil drainage hole channel is positioned on the mounting surface of the cylinder head of the piston hydraulic cylinder and the variable loading valve block and is connected with the oil drainage inclined hole channel;
the oil drainage inclined hole is located on a joint surface of the variable loading valve block and the cylinder head of the piston hydraulic cylinder, one end of the oil drainage inclined hole is connected with the other end of the oil drainage hole, and the other end of the oil drainage inclined hole is connected with the oil outlet.
3. The medium speed pulverizer hydraulic cylinder of claim 2,
and machining an oil drainage duct on the circumferential surface of the diameter of the oil inlet hole by using a rotary machine.
4. The medium speed pulverizer hydraulic cylinder of claim 3,
and after the oil drainage hole is processed, plugging a fabrication hole for additionally processing the oil drainage hole by using a plug.
5. The medium speed pulverizer hydraulic cylinder of claim 1,
and a dust cover is arranged on the outer side of the piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222069685.8U CN218235678U (en) | 2022-08-08 | 2022-08-08 | Hydraulic cylinder of medium-speed coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222069685.8U CN218235678U (en) | 2022-08-08 | 2022-08-08 | Hydraulic cylinder of medium-speed coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218235678U true CN218235678U (en) | 2023-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222069685.8U Active CN218235678U (en) | 2022-08-08 | 2022-08-08 | Hydraulic cylinder of medium-speed coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218235678U (en) |
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2022
- 2022-08-08 CN CN202222069685.8U patent/CN218235678U/en active Active
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