A dry cleaning solvent filter box and a dry cleaning machine equipped with the filter box

Abstract

The utility model discloses a dry cleaning solvent filter box and a dry cleaning machine equipped with the filter box, which solves the drawbacks existing in the design of the filter system in the existing dry cleaning machine, especially the problem of accumulation and precipitation of the activated carbon of the filter material. The internal cavity of the filter box is divided into an upper chamber, a middle chamber and a lower chamber from top to bottom by an upper partition and a lower partition. A first-level filter element is arranged on the lower partition, and the first-level filter element extends upward to the middle chamber; a second-level filter element is arranged on the upper partition, and the second-level filter element extends downward to the middle chamber; the lower chamber is filled with filter materials; and an oil inlet is arranged at the low point of the lower chamber, and an oil return pipe is arranged on the upper chamber. The method of oil inlet at the lower end and oil outlet at the upper end makes the internal filter activated carbon in a boiling and flipping state under the action of pumping pressure, so that the activated carbon particles are in full contact with the oil, the adsorption effect is improved, and the problem of easy accumulation of activated carbon in traditional dry cleaning machines is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dry cleaning machines. Background Art

[0002] At present, the dry cleaning solvent filtration system of the known dry cleaning machines for clothing, bedding, etc., filters and regenerates the dry cleaning machine by two-stage filtration or three-stage filtration. The basic principle is to filter the granular and colloidal impurities in the solvent through activated carbon, a primary filter element and a secondary filter element, and to adsorb the pigments and soluble impurities in the dry cleaning solvent.

[0003] The dry cleaning solvent filtering systems in the prior art all adopt the top-in-bottom-out method for filtering. For example, CN210946154U discloses a dry cleaning solvent filtering system that adopts the top-in-bottom-out method for filtering the dry cleaning solvent, that is, the liquid inlet is designed at the top of the filter box, and the liquid outlet is set at the bottom of the filter box, so as to make full use of the gravity of the dry cleaning solvent to achieve the rapid passage of the dry cleaning solvent. In other words, in the existing design, the top-in-bottom-out design of the dry cleaning solvent is more based on the consideration of circulation efficiency. The disadvantage of this design is that the activated carbon will accumulate in the filter box, and the adsorption effect of the accumulated activated carbon particles will be reduced. In other words, the activated carbon particles are in a precipitated state in the filter box, and they cannot be fully and widely adsorbed with the dry cleaning solvent, which reduces the efficiency of the activated carbon particles. Summary of the invention

[0004] In order to solve the deficiencies of the prior art, the utility model provides a dry cleaning solvent filter box and a dry cleaning machine equipped with the filter box, which solves the drawbacks existing in the design of the filter system in the existing dry cleaning machines, especially the problems of accumulation and precipitation of activated carbon in the filter material.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A dry cleaning solvent filter box, wherein the inner cavity of the filter box is divided into an upper chamber, a middle chamber and a lower chamber from top to bottom by an upper partition and a lower partition, and is characterized in that:

[0007] The lower partition is provided with a first-level filter element, and the first-level filter element extends upward to the middle chamber;

[0008] A level II filter element is arranged on the upper partition plate, and the level II filter element extends downward to the middle chamber;

[0009] The lower chamber is filled with filtering material; and

[0010] An oil inlet is arranged at the lowest point of the lower chamber, and an oil return is arranged on the upper chamber. The dry cleaning solvent enters from the oil inlet and flows out from the oil return to form a channel from bottom to top in the filter box.

[0011] Furthermore, the filter box is provided with a secondary sewage pipe opening, an exhaust pipe opening and / or a sewage pipe opening, wherein the secondary sewage pipe opening is located at the low point of the middle chamber, the exhaust pipe opening is located at the high point of the middle chamber, and the sewage pipe opening is located at the low point of the lower chamber.

[0012] Furthermore, the secondary sewage discharge pipe outlet is externally connected to a sewage discharge pipe and a valve, and the secondary sewage discharge is opened by periodically opening the valve.

[0013] Furthermore, the exhaust pipe port is externally connected to an exhaust valve for exhausting the collected gas generated in the middle chamber.

[0014] Furthermore, the filter material is activated carbon particles, kaolin or artificial filter material particles.

[0015] Furthermore, the first-level filter element is installed in an inverted manner with the opening facing downward, and the first-level filter element forms a primary filtration between the middle chamber and the lower chamber. The second-level filter element is installed in a suspended manner with the opening facing upward, and the second-level filter element forms a secondary filtration between the middle chamber and the upper chamber.

[0016] Furthermore, the filter box is composed of two or three lower box sections, and the box sections are connected by flanges.

[0017] Furthermore, the outer contour of the filter box may be a cylinder, a cuboid or an ellipsoid.

[0018] Furthermore, the filter box has a mounting plate for mechanical assembly of the filter box.

[0019] A dry cleaning machine comprises a washing barrel, an oil tank and a filter box, wherein the filter box adopts the dry cleaning solvent filter box of the above structure.

[0020] Furthermore, it also includes a pump and a pre-filter arranged between the filter box and the washing tub, wherein the pump provides pumping force, and the pre-filter is arranged before the filter box to perform coarse filtering on the dry cleaning solvent entering the filter box.

[0021] The beneficial effects of the utility model are:

[0022] This technical innovation changes the traditional method of oil inlet at the top and oil outlet at the bottom to oil inlet at the bottom and oil outlet at the top. This change in circulation mode allows the internal filter activated carbon to be in a boiling and flipping state under the action of pumping pressure, allowing sufficient contact between the activated carbon particles and the oil, improving the adsorption effect and solving the problem of easy accumulation of activated carbon in traditional dry cleaning machines. At the same time, with this change in circulation mode, in the non-pumping state, the dirt generated by the first-stage filtration and the second-stage filtration will fall and gather under the action of gravity and be discharged regularly, avoiding the deposition of dirt in the filter element, thereby increasing the service life of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a diagram of the structure of this dry cleaning machine.

[0024] Figure 2 It is a three-dimensional diagram of the filter box in the first embodiment.

[0025] Figure 3 for Figure 2 sectional view of .

[0026] Figure 4 for Figure 2 Assembly drawing of .

[0027] Figure 5 It is a three-dimensional diagram of the filter box in the second embodiment.

[0028] Figure 6 for Figure 5 sectional view of .

[0029] In the figure:

[0030] 100 washing buckets,

[0031] 200 fuel tank,

[0032] 300 filter box, 310 upper box, 311 oil return pipe, 312 secondary sewage pipe, 313 exhaust pipe, 314 mounting plate, 320 lower box, 321 oil inlet, 322 sewage pipe, 323 mounting plate, 330 upper chamber, 340 middle chamber, 350 lower chamber, 360 upper partition, 361 second-level filter element, 370 lower partition, 371 first-level filter element,

[0033] 400 pumps,

[0034] 500 pre-filter. DETAILED DESCRIPTION

[0035] like Figure 1 As shown, a dry cleaning machine includes a washing tub 100, an oil tank 200, and a filter box 300, and a self-purification system of dry cleaning solvent is established between the three. The self-purification system also includes a pump 400 and a pre-filter 500, wherein a pre-filter 500 is arranged between the washing tub and the pump. The pre-filter is preferably a detachable and replaceable structure, that is, the pre-filter is designed as a quickly replaceable interface structure to meet the needs of replacement. The function of the pre-filter is to pre-filter solid objects (such as keys, buttons), fluff (handkerchiefs), etc. that appear during the washing process to avoid clogging the pump.

[0036] After the dry cleaning solvent is initially filtered by the pre-filter, it enters the filter box backwards, which is one of the important structures of the utility model. The internal structure of the filter box is as follows.

[0037] Embodiment 1

[0038] The filter box 300 is a closed box as a whole, and adopts a split design, which is convenient for replacing the filter assembly. The filter box as a whole can be any shape such as a cylinder, a cuboid, an ellipsoid, etc. This embodiment is based on a cylindrical box structure. Inside the filter box is the installation space for the filter assembly, that is, the functional space.

[0039] refer to Figures 2 to 4 The filter box 300 is composed of an upper box body 310 and a lower box body 320, which are preferably made of stainless steel, and the upper and lower boxes are connected by flanges. The internal cavity enclosed by the above two boxes is divided into three chambers from bottom to top by two partitions. For ease of description and quick understanding, the three chambers are marked with an upper chamber 330, a middle chamber 340 and a lower chamber 350, respectively, and the two partitions are distinguished by an upper partition 360 and a lower partition 370, respectively.

[0040] The lower baffle 370 is located at the upper end of the lower box body and is welded to the lower box body 320. The lower baffle extends outward to the outer surface of the lower box body and forms a flange connection. Correspondingly, a flange connection is formed at the lower edge of the upper box body 310 by flanging or welding, and the upper and lower boxes are fastened by bolt connection, and a rubber sealing gasket can be configured, that is, the upper and lower boxes are assembled and connected by flange connection.

[0041] Furthermore, a first-level filter element mounting hole is provided on the lower partition 370, and there are four or a similar plurality of first-level filter element mounting holes, which are evenly distributed on the lower partition, and a first-level filter element 371 is docked and installed at the first-level filter element mounting hole. After installation, the first-level filter element is vertically arranged and located in the middle chamber, that is, the first-level filter element 371 is installed in an inverted manner with the opening facing downward, that is, after installation, the internal space of the first-level filter element 371 is connected with the lower chamber, and the first-level filter element forms a primary filtration between the middle chamber and the lower chamber.

[0042] Furthermore, an oil inlet 321 and a sewage discharge port 322 are provided at the low point of the lower box body 320 where the above-mentioned lower chamber is located, wherein the oil inlet port is externally connected to an oil inlet pipe and an oil pump to supply oil to the lower chamber, and the sewage discharge port is externally connected to a sewage discharge pipe and a valve to regularly discharge the internal precipitated dirt by opening the valve.

[0043] The lower chamber 350 is filled with activated carbon particles. The activated carbon particles are filled in the lower chamber. The filling quantity is set according to the design. For example, the filling occupies two-thirds of the space in the lower chamber. As long as it is filled, it is within the protection scope of the present utility model. Under the action of the oil, the activated carbon particles inside are in a disturbed state, that is, the activated carbon particles are disturbed from bottom to top, and fall along the inner wall of the chamber under the action of gravity, which is in a cyclic disturbance process, solving the accumulation problem of activated carbon particles. This cyclic disturbance has a positive significance for improving the adsorption effect of activated carbon.

[0044] Furthermore, a mounting plate 323 is provided on the lower housing 320 for mechanical assembly of the filter housing.

[0045] The upper box body, the internal space of the upper box body 310 is divided into two by the upper partition, wherein the upper partition 360 is fixed to the inside of the upper box body by welding, and a level II filter element mounting hole is arranged on the upper partition, and the level II filter element mounting holes are four or a similar plurality of holes, evenly distributed on the upper partition, and the level II filter element 361 is docked and installed at the level II filter element mounting holes. After installation, the level II filter element is vertically arranged and suspended. The filter element is located in the middle chamber, that is, the level II filter element 361 is suspended and installed with the opening facing upward, that is, after installation, the internal space of the level II filter element is connected with the upper chamber, and the level II filter element forms a secondary filtration between the middle chamber and the upper chamber.

[0046] After the upper box and the lower box are assembled, from top to bottom, they are an upper chamber 330, a middle chamber 340 and a lower chamber 350. The upper chamber is a reflux chamber, and the internal space does not need to be too large, that is, it has a small space, and an oil return pipe port 311 is provided on the upper box wall corresponding to the upper chamber, and the oil return pipe port 311 is connected to the oil storage tank through an oil pipe.

[0047] The middle chamber is a space for secondary filtration, and a secondary sewage outlet 312 and an exhaust outlet 313 are arranged on the inner wall of the upper box 310 corresponding to the middle chamber. The secondary sewage outlet is located at the low point of the middle chamber, and is used to collect the dirt and impurities generated by the filter element of the second level and discharge them out through the secondary sewage outlet. The secondary sewage outlet 312 is connected to the sewage outlet and the valve, and the secondary sewage is opened by opening the valve regularly.

[0048] The exhaust pipe port 313 is located at the high point corresponding to the middle chamber, and an exhaust valve is connected to the exhaust pipe port to discharge the collected gas generated in the middle chamber. Preferably, the exhaust pipe port is as close to the upper partition as possible, that is, located at the high point of the middle chamber, which is conducive to the collection of gas.

[0049] Furthermore, a mounting plate 314 is provided on the upper housing 310 for mechanical assembly of the filter housing.

[0050] The basic filtering process of this embodiment is:

[0051] Under the action of pumping pressure, the dry cleaning solvent passes through activated carbon filtration, primary filtration and secondary filtration from bottom to top. The activated carbon rolls in the lower chamber and makes it in a boiling state to prevent it from settling, so as to maximize the efficiency of the activated carbon. Secondly, the filter elements of levels I and II are both set vertically. In the filtering state, the dry cleaning solvent is efficiently filtered. In the shutdown state (non-working state without pumping pressure), the obstructed dirt generated by the above-mentioned primary filtration will fall under the action of gravity and eventually gather at the bottom of the lower chamber and be removed regularly. The obstructed dirt generated by the secondary filtration will gather at the bottom of the middle chamber under the action of gravity and be removed regularly.

[0052] The dry cleaning solvent filtration system only needs two pumps to complete the filtration and circulation of the dry cleaning solvent, and the use of the pressure relief valve can ensure the internal pressure safety. It increases the filtration speed, improves the filtration and purification effect, and ensures that the dry cleaning solvent is always in a clean state; it avoids the previous problems such as turbidity and inability to circulate.

[0053] Implementation column 2

[0054] refer to Figure 5 and Figure 6 In this embodiment, the upper box body adopts a split design. Specifically, the upper box body is divided into two at the upper partition position and flanged. The internal structure remains unchanged. This structure can increase the convenience of repair and maintenance. This structural change should also be within the protection scheme of the present utility model.

[0055] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements to the present invention by relevant technical personnel in the field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A dry cleaning solvent filter box, wherein the inner cavity of the filter box is divided into an upper chamber (330), a middle chamber (340) and a lower chamber (350) from top to bottom by an upper partition and a lower partition, characterized in that: A first-level filter element (371) is disposed on the lower partition plate (370), and the first-level filter element (371) extends upward to the middle chamber; A level II filter element (361) is disposed on the upper partition plate (360), and the level II filter element (361) extends downward to the middle chamber; The lower chamber (350) is filled with filtering material; and An oil inlet (321) is provided at the lowest point of the lower chamber (350), and an oil return pipe (311) is provided on the upper chamber (330); the dry cleaning solvent enters from the oil inlet and flows out from the oil return pipe to form a channel from bottom to top in the filter box.

2. A dry cleaning solvent filter box according to claim 1, characterized in that: The filter box is provided with a sewage discharge pipe opening (322), a secondary sewage discharge pipe opening (312) and / or an exhaust pipe opening (313), wherein the sewage discharge pipe opening (322) is located at the low point of the lower chamber, the secondary sewage discharge pipe opening is located at the low point of the middle chamber, and the exhaust pipe opening (313) is located at the high point of the middle chamber.

3. A dry cleaning solvent filter box according to claim 2, characterized in that: The secondary sewage pipe outlet (312) is externally connected to a sewage pipe and a valve; the exhaust pipe outlet (313) is externally connected to an exhaust valve.

4. A dry cleaning solvent filter box according to claim 1, characterized in that: The filter material is activated carbon particles, white clay or artificial filter material particles.

5. A dry cleaning solvent filter box according to claim 1, characterized in that: The first-level filter element (371) is installed in an inverted manner with its opening facing downward, and the first-level filter element forms a primary filter between the middle chamber and the lower chamber. The second-level filter element (361) is installed in a suspended manner with its opening facing upward, and the second-level filter element forms a secondary filter between the middle chamber and the upper chamber.

6. A dry cleaning solvent filter box according to claim 1, characterized in that: The filter box (300) is composed of two or three sections of lower box bodies (320), and the box bodies are connected by flanges.

7. A dry cleaning solvent filter box according to claim 1, characterized in that: The outer contour of the filter box is a cylinder, a cuboid or an ellipsoid.

8. A dry cleaning solvent filter box according to claim 1, characterized in that: The filter box has a mounting plate (323).

9. A dry cleaning machine, comprising a washing tub (100), an oil tank (200) and a filter box (300), characterized in that: The filter box is a dry cleaning solvent filter box as described in any one of claims 1 to 8.

10. A dry cleaning machine according to claim 9, characterized in that: It also includes a pump (400) and a pre-filter (500) disposed between the filter box and the washing tub.

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