Rotary drum with tensioning mechanisms at two ends and vacuum filter using rotary drum

Abstract

The utility model relates to a dewaxing drum vacuum filter and a drum thereof. The dewaxing drum vacuum filter comprises a dewaxing drum vacuum filter, a filter drum, a drum distribution head end plate, a drum driving end plate, a steel wire lead groove plate, a steel wire guide wheel, a steel wire pressing block, a tensioning mechanism and a winding steel wire. The device is characterized in that the steel wire guide plate, the steel wire guide wheel, the tensioning mechanism and the steel wire pressing block are respectively arranged on the end plate of the distribution head end of the rotary drum and the end plate of the driving end of the rotary drum; during winding, the starting end and the ending end of the winding steel wire are fixed to the tensioning mechanisms of the end plates at the two ends of the rotary drum respectively. The dewaxing and deoiling device has the advantages that when each winding steel wire on the rotary drum expands with heat and contracts with cold, the tensioning mechanisms at the two ends can exert acting force on the steel wire at the same time, the winding steel wire is prevented from being loosened or broken, the stable operation time of a unit can be prolonged, and the production efficiency of the dewaxing and deoiling device is improved.

Description

Technical Field

[0001] The utility model relates to the field of rotary drum vacuum filters, in particular to a rotary drum of a dewaxing rotary drum vacuum filter. Background Art

[0002] The dewaxing drum vacuum filter is a key equipment of the solvent dewaxing device of the petroleum refining enterprise. Its core component is the drum used for oil and wax separation. The drum is cylindrical, and the outside of the drum is the filtering surface. The end plates at both ends are welded to the drum; one end plate is equipped with the drum drive shaft, which is called the driving end plate; the other end is equipped with the driven shaft and the rotating gas disc, which is connected to the distribution head, which is called the distribution head end plate. The filter cloth is laid on the filter surface of the drum. The filter cloth is wound with steel wire according to the specified pitch and tension, and the two ends of the steel wire are fixed on the end plates at both ends of the drum.

[0003] When the dewaxing drum vacuum filter is working normally, each cycle goes through the process of cold washing and warm washing. The internal temperature is always in an alternating state. The steel wire wrapped on the drum filter cloth is affected by thermal expansion and contraction, and the length of the steel wire changes. If it is not handled properly, the steel wire will become loose or broken, causing the filter to have to be stopped for repairs, which greatly reduces the working efficiency of the equipment.

[0004] At present, the dewaxing filters in use in my country all use the technology of the 1980s. The filter drum is only equipped with a common tensioner at the distribution head end. The starting end of the winding wire is fixed on the tensioner, and at the winding end, the wire is directly fixed on the bolt of the end plate of the driving end. The drum with this structural configuration is suitable for working conditions with small working temperature difference and low warm washing frequency. In recent years, with the continuous improvement of market requirements for the quality of paraffin and wax oil, the dewaxing process has changed greatly. The filtration temperature difference is getting larger and larger, and the warm washing frequency is constantly increasing. The above-mentioned filter drum often has problems with the winding wire "loose, running, and broken", which seriously affects the stable production of the device. Summary of the invention

[0005] The purpose of the utility model is to provide a filter drum with tensioning mechanisms at both ends, and the two ends of the winding steel wire are respectively connected and fixed to the tensioning mechanisms on the end plates on both sides of the drum. When the length of the steel wire changes due to thermal expansion and contraction, the tensioning mechanisms at both ends of the drum can work synchronously, which can effectively reduce the occurrence of problems such as "loosening, running, and breaking" of the winding steel wire, thereby reducing the number of equipment shutdowns and improving the working efficiency of the equipment.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a filter drum with tensioning mechanisms at both ends, which includes a dewaxing drum vacuum filter, a filter drum, a drum distribution head end plate, a drum drive end end plate, a wire guide slot plate, a wire guide wheel, a wire clamping block, a tensioning mechanism, and a winding wire. It is characterized in that the wire guide plate, the wire guide wheel, the tensioning mechanism, and the wire clamping block are respectively installed on the drum distribution head end plate and the drum drive end end plate; when winding, the starting end and the ending end of the winding wire are respectively fixed to the tensioning mechanisms of the drum end plates at both ends.

[0007] Furthermore, the tensioning mechanism is composed of a spring, a pulley rod, a sliding track and a ratchet assembly, which serves as a fixing part for the end of the steel wire and is also used to adjust the length of the steel wire.

[0008] The advantages of the utility model are as follows: first, both ends of each winding steel wire on the drum are connected to the tensioning mechanism. When the temperature inside the filter rises, causing the steel wire to expand and lengthen while the tension decreases, the tensioning mechanism automatically contracts and tightens the steel wire to prevent the steel wire wound on the drum from loosening; when the temperature inside the filter drops, causing the steel wire to shrink and shorten while the tension increases, the tensioning mechanism automatically extends to prevent the steel wire wound on the drum from being overstressed and broken; second, when the drum is operating normally, the tensioning mechanisms on the end plates at both ends of the drum can work synchronously, and the stress changes of the winding steel wire are smooth and balanced, effectively preventing the frequent occurrence of problems such as "loosening, running and breaking" of the winding steel wire; third, it is conducive to the stable operation of the filter, reduces maintenance and repair costs, and improves the production efficiency of the dewaxing and deoiling device; fourth, the utility model can be used to transform the filter in use with just a little modification, with low investment and quick results. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to make the technical problem to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and preferred embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0010] Figure 1 This is a schematic diagram of the main structure of the dewaxing drum vacuum filter of the utility model;

[0011] Figure 2 This is a schematic diagram of the main structure of the filter drum of the utility model;

[0012] Figure 3 for Figure 2 The left view is a schematic diagram of the end plate of the drum distribution head;

[0013] Figure 4 for Figure 2The right side view is a schematic diagram of the end plate of the drum driving end;

[0014] In the figure: 1-dewaxing drum vacuum filter; 2-filter drum; 21-drum distribution head end plate; 22-drum drive end end plate; 23-drum filter cloth; 24-first drum winding wire; 25-second drum winding wire; 211-distribution head end first wire take-up device; 212-distribution head end second wire take-up device; 221-drive end first lead wire slot plate; 222-drive end first guide wheel; 223-drive end first wire pressing plate; 224-drive end first wire take-up device; 225-drive end second lead wire slot plate; 226-drive end second guide wheel; 227-drive end second wire pressing plate; 228-drive end second wire take-up device. DETAILED DESCRIPTION

[0015] The following is a preferred embodiment of a filter drum using a group (2) of steel wires and further illustrates the technical solution of the utility model in conjunction with the accompanying drawings.

[0016] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the filter drum 2 with tensioning mechanisms at both ends provided by the utility model includes: a drum distribution head end plate 21, a drum drive end end plate 22, a drum filter cloth 23, a first drum winding wire 24, a second drum winding wire 25, a first wire starter 211 at the distribution head end, a second wire starter 212 at the distribution head end, a first lead wire slot plate 221 at the drive end, a first guide wheel 222 at the drive end, a first wire pressing plate 223 at the drive end, a first wire take-up device 224 at the drive end, a second lead wire slot plate 225 at the drive end, a second guide wheel 226 at the drive end, a second wire pressing plate 227 at the drive end, and a second wire take-up device 228 at the drive end.

[0017] like Figure 2 As shown, the filter drum 2 with tensioning mechanisms at both ends has a filtering surface on the outside of the cylinder, on which the drum filter cloth 23 is laid, and the drum filter cloth 23 is wound by the first drum winding wire 24 and the second drum winding wire 25; the two ends of the cylinder are the drum distribution head end plate 21 and the drum drive end end plate 22 respectively.

[0018] like Figure 3 As shown, the first wire starter 211 and the second wire starter 212 of the distribution head end are installed on the end plate 21 of the distribution head end of the drum. The first wire starter 211 of the distribution head end serves as a tensioning mechanism at the starting end of the first drum winding steel wire 24, and the second wire starter 212 of the distribution head end serves as a tensioning mechanism at the starting end of the second drum winding steel wire 25.

[0019] like Figure 4As shown, the first drive end guide groove plate 221, the first drive end guide wheel 222, the first drive end wire pressure plate 223, and the first drive end wire take-up device 224 are installed on the drive end end plate 22 of the drum, so as to guide the end of the first drum winding wire 24 to the first drive end wire take-up device 224 and make the first drive end wire take-up device 224 become the end end tensioning mechanism of the first drum winding wire 24.

[0020] Furthermore, if Figure 4 As shown, the second lead groove plate 225, the second guide wheel 226, the second wire pressing plate 227 and the second wire take-up 228 are installed on the end plate 22 of the driving end of the drum, so as to guide the end of the second drum winding wire 25 to the second wire take-up 228 and make the second wire take-up 228 become the end end tensioning mechanism of the second drum winding wire 25.

[0021] The filter winding mode is turned on, starting from the end plate 21 side of the drum distribution head end, the starting end of the first drum winding wire 24 is connected and fixed to the first wire starter 211 of the distribution head end, the filter drum rotates, and the first drum winding wire 24 is spirally wound along the surface of the drum filter cloth 23 under the traction of the winding mechanism. When it reaches the end plate 22 of the drum driving end, the first drum winding wire 24 is led out of the drum surface along the first lead slot plate 221, passes through the first guide wheel 222 of the driving end, the first wire pressing plate 223 of the driving end, and is fixed to the first wire take-up 224 of the driving end; the second drum winding wire 25 is wound in the same way.

Claims

1. A rotary drum with tensioning mechanisms at both ends and a vacuum filter using the rotary drum, characterized in that: include: Dewaxing drum vacuum filter (1); A filter drum (2) with tensioning mechanisms at both ends; The filter drum (2) with tensioning mechanisms at both ends comprises: a drum distribution head end plate (21), a drum drive end end plate (22), a first drum winding wire (24), a second drum winding wire (25), a first wire starter (211) at the distribution head end, a second wire starter (212) at the distribution head end, a first lead wire slot plate (221) at the drive end, a first guide wheel (222) at the drive end, a first wire pressing plate (223) at the drive end, a first wire take-up device (224) at the drive end, a second lead wire slot plate (225) at the drive end, a second guide wheel (226) at the drive end, a second wire pressing plate (227) at the drive end, and a second wire take-up device (228) at the drive end.

2. The rotary drum with tensioning mechanisms at both ends and the vacuum filter using the rotary drum according to claim 1 are characterized in that: The first wire starter (211) and the second wire starter (212) of the distribution head end are installed on the end plate (21) of the distribution drum distribution head end. The first wire starter (211) of the distribution head end is used as a tensioning mechanism at the starting end of the first drum winding steel wire (24), and the second wire starter (212) of the distribution head end is used as a tensioning mechanism at the starting end of the second drum winding steel wire (25).

3. The rotary drum with tensioning mechanisms at both ends and the vacuum filter using the rotary drum according to claim 1 are characterized in that: The first drive end wire guide groove plate (221), the first drive end guide wheel (222), the first drive end wire pressing plate (223), and the first drive end wire take-up device (224) are installed on the drive end end plate (22) of the drum, so as to guide the end of the first drum winding wire (24) to the first drive end wire take-up device (224) and make the first drive end wire take-up device (224) become the end end tensioning mechanism of the first drum winding wire (24).

4. The rotary drum with tensioning mechanisms at both ends and the vacuum filter using the rotary drum according to claim 1 are characterized in that: The driving end end plate (22) is provided with the driving end second wire guide groove plate (225), the driving end second guide wheel (226), the driving end second wire pressing plate (227) and the driving end second wire take-up device (228) for guiding the end of the second drum winding wire (25) to the driving end second wire take-up device (228) and making the driving end second wire take-up device (228) become the end end tensioning mechanism of the second drum winding wire (25).

5. The rotary drum with tensioning mechanisms at both ends and the vacuum filter using the rotary drum according to claim 1, characterized in that: The dewaxing drum vacuum filter (1) uses a filter drum (2) with tensioning mechanisms at both ends as claimed in claim 2, claim 3 and claim 4.

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