Decoloration and dehydration device for waste transformer oil

Abstract

The utility model relates to the technical field of waste transformer oil treatment devices, in particular to a waste transformer oil decoloration and dehydration device which comprises a primary filter barrel, a vacuum separator and a fine filter barrel which are located on a movable frame and connected in sequence, and filter elements used for filtering waste transformer oil are arranged in the primary filter barrel and the fine filter barrel respectively. An oil inlet pipe and an oil outlet pipe are connected to the side walls of the primary filtering barrel and the fine filtering barrel respectively, an inner container communicated with the oil inlet pipe is fixed in the primary filtering barrel, an inner pipe connected with a vacuum separator is fixed to the side, away from the oil inlet pipe, of the inner container, a clamping block used for fixing a filter element is arranged in the inner container, and openings are formed in the tops of the inner container and the primary filtering barrel; according to the waste transformer oil decoloration and dehydration device, the openings are formed in the top of the inner container for containing the filter element and the top of the primary filter barrel, and the inner baffle and the outer baffle are used for sealing, so that the opening operation in the primary filter barrel is simplified, and the replacement operation of the filter element is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of waste transformer oil processing devices, in particular to a waste transformer oil decolorization and dehydration device. Background Art

[0002] New transformer oil is slightly transparent and light yellow, and the color will turn light red after running for a period of time. If the oil color becomes darker, it means that the insulation of the transformer has aged, resulting in impurities in the transformer oil. When the waste transformer oil is recycled, it needs to be dehydrated and decolorized. The existing dehydration and decolorization devices are generally composed of a primary filter barrel, a vacuum separator and a fine filter barrel. The waste oil is sucked into the device through a negative pressure device to complete the dehydration and decolorization operation. As the primary filter barrel that first processes the waste oil, because there are more impurities when the waste transformer oil first enters the device, the filter element inside the primary filter barrel has an extremely short service life and often needs to be replaced. The existing device is inconvenient to replace the filter element in the primary filter barrel, which affects the use effect of the device. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides a waste transformer oil decolorization and dehydration device, which solves the problem that when the waste transformer oil first enters the device, there are many impurities, which makes the service life of the filter element inside the primary filter barrel extremely short and often needs to be replaced. The existing device is inconvenient to operate when replacing the filter element in the primary filter barrel, which affects the use effect of the device.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a waste transformer oil decolorization and dehydration device, comprising a primary filter barrel, a vacuum separator and a fine filter barrel which are located on a mobile frame and connected in sequence, the primary filter barrel and the fine filter barrel are both provided with filter elements for filtering the waste transformer oil, the side walls of the primary filter barrel and the fine filter barrel are respectively connected with an oil inlet pipe and an oil outlet pipe, an inner tank connected to the oil inlet pipe is fixed in the primary filter barrel, an inner tube connected to the vacuum separator is fixed on the side of the inner tank away from the oil inlet pipe, a block for fixing the filter element is provided in the inner tank, openings are provided on the tops of the inner tank and the primary filter barrel, and an inner baffle and an outer baffle for sealing are respectively provided at the openings, a telescopic rod with a spring is connected between the two, a fixing part for pressing the outer baffle is installed on the top of the primary filter barrel, a recoil part for backwashing the filter element is provided in the inner tank and close to the inner tube.

[0007] Furthermore, a threaded rod with an end connected to the inner wall of the inner tank passes through the side wall of the block, the movement direction of the block is coaxial with the direction of the end of the inner tube, and a nut that can inhibit the movement of the block is threadedly connected to the outer wall of the threaded rod. The block moves on the threaded rod so as to be adjusted according to the length of the filter element. The nut is rotated to the side of the block away from the filter element and contacts it, thereby completing the clamping operation of the filter element. It is simple and practical.

[0008] Furthermore, a card groove adapted to the filter element is provided on the side opposite to the inner tank, and the card groove is in the form of multiple groups of concentric annular grooves. A channel connected to the inner tube is provided on the side wall of the inner tank, and the card groove is located outside the channel. Multiple groups of annular grooves facilitate limiting the filter elements with different outer diameters, thereby improving the clamping stability of the filter element.

[0009] Furthermore, the fixing member includes a fixing cylinder fixed to the top of the primary filter barrel, a retractable clamping rod is inserted into the fixing cylinder, and when the end of the clamping rod moves to the top of the outer baffle plate, it can be pressed and closed. An inclined surface is provided on the bottom side of the clamping rod close to one end of the outer baffle plate to facilitate smooth movement to the top of the outer baffle plate. A screw threadedly connected to the top of the fixing cylinder is also passed through the top of the fixing cylinder, and the bottom end of the screw is against the clamping rod to limit its movement, thereby improving the limiting effect of the clamping rod on the outer baffle plate.

[0010] Furthermore, the recoil component includes an extension tube whose end extends into the inner tank, a slidable sleeve is sleeved on the end of the extension tube, and an air hole for backwashing the filter element is opened on the sleeve, a tension spring is connected between the sleeve and the extension tube, and the end of the extension tube away from the sleeve extends to the top of the primary filter barrel and is connected to an air pump, which is installed on the top of the primary filter barrel. The air pump leads the gas into the sleeve through the extension tube and discharges it from the air hole, backwashing the filter element in the form of dense small bubbles, and the filter element can be cleaned when it is blocked, which can increase the service life of a single filter element to a certain extent. The sleeve can move away from the extension tube under the action of airflow, thereby increasing the cleaning range of the filter element. At the same time, the tension spring pulls it back when there is no airflow, reducing the impact on the installation of the filter element.

[0011] Furthermore, a baffle is installed on the inner wall of the inner tank, and the baffle is inclined downward away from the inner tank. The baffle can intercept some impurities backwashed out to prevent them from being re-adsorbed near the filter element.

[0012] (III) Beneficial effects

[0013] The utility model provides a waste transformer oil decolorization and dehydration device, which has the following beneficial effects:

[0014] 1. The waste transformer oil decolorization and dehydration device simplifies the opening operation inside the primary filter barrel and facilitates the replacement operation of the filter element by opening an opening in the inner tank for storing the filter element and the top of the primary filter barrel and closing it with an inner baffle and an outer baffle.

[0015] 2. The waste transformer oil decolorization and dehydration device can be adjusted according to the length of the filter element by moving the clamping block on the threaded rod. The nut is rotated to the side of the clamping block away from the filter element and abuts against it, so that the filter element can be clamped. It is simple and practical. Multiple groups of annular grooves are convenient for limiting the filter elements with different outer diameters, thereby improving the clamping stability of the filter element.

[0016] 3. The waste transformer oil decolorization and dehydration device uses an air pump to lead the gas into the casing through the extension tube and discharge it from the air hole, and backwashes the filter element in the form of dense small bubbles. When the filter element is blocked, it can be cleaned, which can increase the service life of a single filter element to a certain extent. The casing can move away from the extension tube side under the action of airflow, increasing the cleaning range of the filter element. At the same time, the tension spring pulls it back when there is no airflow, reducing the impact on the installation of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the internal structure of the primary filter barrel of the utility model.

[0018] Figure 2 It is a schematic diagram of the external structure of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the recoil member of the utility model.

[0020] In the figure: 1. primary filter barrel; 2. vacuum separator; 3. fine filter barrel; 4. inner tank; 5. inner tube; 6. clamping block; 7. threaded rod; 8. inner baffle; 9. telescopic rod; 10. outer baffle; 11. fixing piece; 12. recoil piece; 121. extension tube; 122. sleeve; 123. air hole; 124. tension spring; 13. air pump; 14. baffle. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides a waste transformer oil decolorization and dehydration device, such as Figure 1-3As shown, it includes a primary filter barrel 1, a vacuum separator 2 and a fine filter barrel 3 which are located on a mobile frame and connected in sequence. The primary filter barrel 1 and the fine filter barrel 3 are both provided with filter elements for filtering waste transformer oil. The side walls of the primary filter barrel 1 and the fine filter barrel 3 are respectively connected with an oil inlet pipe and an oil outlet pipe. The mobile frame is also provided with a fluid pump connected with the primary filter barrel 1 to generate negative pressure inside the primary filter barrel 1, and a PLC controller for controlling the operation of related electrical appliances. These are all existing mature technologies and are not described in detail. An inner tank 4 connected with the oil inlet pipe is fixed in the primary filter barrel 1, and an electric heating pipe fitting for heating the waste transformer oil is installed on the inner wall of the inner tank 4. An inner tube 5 connected with the vacuum separator 2 is fixed on the side of the inner tank 4 away from the oil inlet pipe. A clamping block 6 for fixing the filter element is provided in the inner tank 4. Both the inner tank 4 and the primary filter barrel 1 have openings at the top, and an inner baffle 8 and an outer baffle 10 for closing are provided at the openings, and a telescopic rod 9 with a spring is connected between the two. When the outer baffle 10 is fixed to the top of the primary filter barrel 1, the spring is in a compressed state, which can generate pressure on the inner baffle 8 in the direction of the inner tank 4, thereby improving the sealing between the inner baffle 8 and the inner tank 4. A fixing part 11 for pressing the outer baffle 10 is installed on the top of the primary filter barrel 1, and a recoil part 12 for backwashing the filter element is provided in the inner tank 4 and near the inner tube 5. By openings in the inner tank 4 for accommodating the filter element and the top of the primary filter barrel 1, and closing them with the inner baffle 8 and the outer baffle 10, the opening operation inside the primary filter barrel 1 is simplified, and the replacement operation of the filter element is facilitated.

[0023] Specifically, a threaded rod 7 whose end is connected to the inner wall of the inner tank 4 passes through the side wall of the block 6. The movement direction of the block 6 is coaxial with the direction of the end of the inner tube 5. A nut that can inhibit the movement of the block 6 is threadedly connected to the outer wall of the threaded rod 7. The block 6 moves on the threaded rod 7 so as to be adjusted according to the length of the filter element. The nut is rotated to the side of the block 6 away from the filter element and contacts it, thereby completing the clamping operation of the filter element. It is simple and practical.

[0024] Specifically, a card groove adapted to the filter element is provided on the side opposite to the inner liner 4, and the card groove is a plurality of groups of concentric annular grooves. A channel connected to the inner tube 5 is provided on the side wall of the inner liner 4, and the card groove is located outside the channel. The plurality of groups of annular grooves facilitate the limiting of filter elements with different outer diameters, thereby improving the clamping stability of the filter element.

[0025] Specifically, the fixing member 11 includes a fixing cylinder fixed to the top of the primary filter barrel 1, and a retractable clamping rod is inserted into the fixing cylinder. When the end of the clamping rod moves to the top of the outer baffle 10, it can be pressed and closed. An inclined surface is provided on the bottom side of the clamping rod near one end of the outer baffle 10 to facilitate smooth movement to the top of the outer baffle 10. A screw threadedly connected to the top of the fixing cylinder is also passed through the top of the fixing cylinder. The bottom end of the screw contacts the clamping rod to limit its movement, thereby improving the limiting effect of the clamping rod on the outer baffle 10.

[0026] Specifically, the recoil member 12 includes an extension tube 121 whose end extends into the inner tank 4, a slidable sleeve 122 is sleeved on the end of the extension tube 121, and an air hole 123 for backwashing the filter element is opened on the sleeve 122, a tension spring 124 is connected between the sleeve 122 and the extension tube 121, and one end of the extension tube 121 away from the sleeve 122 extends to the top of the primary filter barrel 1 and is connected to an air pump 13, which is installed on the top of the primary filter barrel 1, and the air pump 13 causes the gas to pass through the extension tube 121 into the sleeve 122 and be discharged from the air hole 123, so as to backwash the filter element in the form of dense small bubbles, so as to clean the filter element when it is blocked, and to increase the service life of a single filter element to a certain extent, and the sleeve 122 can move to the side away from the extension tube 121 under the action of airflow, so as to increase the cleaning range of the filter element, and at the same time, the tension spring 124 pulls it back when there is no airflow, so as to reduce the influence on the installation of the filter element.

[0027] Specifically, a baffle 14 is installed on the inner wall of the inner tank 4. The baffle 14 is tilted downward away from the inner tank 4. The baffle 14 can intercept some impurities backwashed out to prevent them from being re-adsorbed near the filter element.

[0028] Working principle: When in use, the waste transformer oil enters the primary filter barrel 1 through the oil inlet pipe and flows into the inner tank 4. The electric heating pipe heats it to 60 degrees. The filter element filters and decolorizes the waste transformer oil. The waste transformer oil then enters the vacuum separator 2 for dehydration, and finally passes through the fine filter barrel 3 for filtering and decolorization again. When the filter element needs to be replaced, just put the clamping rod into the fixed cylinder to separate the fixing part 11 from the outer baffle 10, and then remove it and the inner baffle 8 to expose the filter element in the inner tank 4 for replacement.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste transformer oil decolorization and dehydration device, comprising a primary filter barrel (1), a vacuum separator (2) and a fine filter barrel (3) which are located on a mobile frame and connected in sequence, wherein the primary filter barrel (1) and the fine filter barrel (3) are both provided with a filter element for filtering the waste transformer oil, and the side walls of the primary filter barrel (1) and the fine filter barrel (3) are respectively connected with an oil inlet pipe and an oil outlet pipe, characterized in that: An inner tank (4) connected to the oil inlet pipe is fixed in the primary filter barrel (1), an inner tube (5) connected to the vacuum separator (2) is fixed on the inner tank (4) away from the oil inlet pipe, a clamping block (6) for fixing the filter element is provided in the inner tank (4), the inner tank (4) and the primary filter barrel (1) are both provided with openings at the top, and an inner baffle (8) and an outer baffle (10) for sealing are provided at the openings, a telescopic rod (9) with a spring is connected between the two, a fixing member (11) for pressing the outer baffle (10) is installed on the top of the primary filter barrel (1), and a backwashing member (12) for backwashing the filter element is provided in the inner tank (4) and near the inner tube (5).

2. A waste transformer oil decolorization and dehydration device according to claim 1, characterized in that: A threaded rod (7) whose end is connected to the inner wall of the inner container (4) passes through the side wall of the clamping block (6); the movement direction of the clamping block (6) is coaxial with the direction of the end of the inner tube (5); and a nut capable of inhibiting the movement of the clamping block (6) is threadedly connected to the outer wall of the threaded rod (7).

3. A waste transformer oil decolorization and dehydration device according to claim 2, characterized in that: The block (6) is provided with a slot adapted to the filter element on one side opposite to the inner liner (4), the slot being in the form of a plurality of groups of concentric annular grooves, the inner liner (4) having a channel connected to the inner tube (5), the slot being located outside the channel.

4. The waste transformer oil decolorization and dehydration device according to claim 1, characterized in that: The fixing member (11) comprises a fixing cylinder fixed to the top of the primary filter barrel (1), a retractable clamping rod being inserted into the fixing cylinder, and when the end of the clamping rod moves to the top of the outer baffle (10), it can be pressed and closed.

5. The waste transformer oil decolorization and dehydration device according to claim 1, characterized in that: The backwash component (12) comprises an extension tube (121) whose end extends into the inner tank (4); a slidable sleeve (122) is sleeved on the end of the extension tube (121); and an air hole (123) for backwashing the filter element is opened on the sleeve (122); a tension spring (124) is connected between the sleeve (122) and the extension tube (121); one end of the extension tube (121) away from the sleeve (122) extends to the top of the primary filter barrel (1) and is connected to an air pump (13); and the air pump (13) is installed on the top of the primary filter barrel (1).

6. The waste transformer oil decolorization and dehydration device according to claim 5, characterized in that: A baffle (14) is installed on the inner wall of the inner container (4), and the baffle (14) is inclined downward away from the side of the inner container (4).

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