A centrifugal filter

Abstract

The invention discloses a centrifugal filter, comprising a centrifugal device, a filtering device and a connecting valve. The centrifugal device comprises a clean water channel, a vortex forming mechanism and a centrifugal mechanism. The vortex forming mechanism comprises a water inlet and a vortex forming member. The vortex forming member is provided with a water outlet pipe along its vertical axis direction. An annular cavity is provided between the water outlet pipe and the outer wall shell of the vortex forming member. A water outlet is formed at the bottom end of the annular cavity. The water outlet is communicated with the centrifugal mechanism. The top end has a closed end. The water inlet is arranged at one side of the vortex forming member. The water inlet is communicated with the annular cavity. The centrifugal mechanism is connected with the filtering device through a connecting valve. A centrifugal member is provided on the centrifugal mechanism. An inverted frustum-shaped middle cavity is provided on the centrifugal member. The cutting fluid of the invention generates centrifugal force by its own flow to separate impurities, thereby realizing continuous purification without consumables. The centrifugal device is connected with the filtering device. Impurities can enter the filtering device for sedimentation. Meanwhile, the filtering device can prevent water from being retained from this side.

Description

Technical Field

[0001] The invention relates to centrifugal filtering equipment, in particular to a centrifugal filter. Background Art

[0002] Centrifugal filter is a common equipment for separating solids and liquids in suspensions. It is widely used in chemical, petroleum, food, pharmaceutical, coal, water treatment and other fields. The centrifugal filters currently used for solid-liquid separation include top-suspended centrifuges, piston-pushing centrifuges, vibrating unloading centrifuges, etc. Their working principle is to use centrifugal force to make the solids settle to the wall of the drum, and the clarified liquid flows to the outlet.

[0003] Existing centrifugal filters have a complex structure and require batch purification, which makes it impossible to achieve continuous water purification. They are time-consuming, labor-intensive and inefficient. Summary of the invention

[0004] The object of the present invention is to provide a centrifugal filter, in which the cutting fluid can separate impurities by means of centrifugal force generated by its own rotation, and can achieve continuous purification without the need for consumables; the centrifugal device is connected to the filtering device, and impurities can enter the filtering device for sedimentation, and the filtering device can prevent water from being retained from this side, so that the cutting fluid after centrifugal filtration can be transported through a clean water pipeline.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a centrifugal filter, comprising a centrifugal device, a connecting valve and a filtering device, wherein the centrifugal device and the filtering device are connected via a connecting valve, the centrifugal device comprises a clean water channel, a vortex forming mechanism and a centrifugal mechanism, the vortex forming mechanism comprises a water inlet and a vortex forming part, the vortex forming part is a cylindrical body structure, the vortex forming part is provided with a water outlet pipe penetrating its body along its vertical axis direction, the upper end and the lower end of the water outlet pipe are respectively connected to the clean water channel and the centrifugal mechanism, the water outlet pipe is connected to the vortex forming part An annular cavity is provided between the outer wall shells of the vortex forming part, the bottom end of the annular cavity penetrates the bottom end of the vortex forming part to form a water outlet, the water outlet is communicated with the centrifugal mechanism, the top of the annular cavity has a closed end, the water inlet part is arranged on one side of the vortex forming part, the water inlet part comprises a water inlet channel and a water inlet, the water inlet penetrates the outer wall shell of the vortex forming part and is communicated with the annular cavity, the centrifugal mechanism is connected to the filtering device through a connecting valve, a centrifugal part is provided on the centrifugal mechanism, the centrifugal part has an inverted frustum body structure, and the centrifugal part is provided with an inverted frustum shaped middle cavity penetrating its body.

[0006] As a further optimization, the centrifugal mechanism also includes a guide part and an impurity sedimentation part. The guide part is arranged at the upper end of the centrifugal part, the upper end of the guide part is connected to the vortex forming part and communicated with the water outlet, and the impurity sedimentation part is arranged at the lower end of the centrifugal part, and the lower end of the impurity sedimentation part is communicated with the connecting valve.

[0007] As a further optimization, the cavity inner diameter of the guide portion is equal to the upper end inner diameter of the middle cavity, and the cavity inner diameter of the impurity settling portion is equal to the lower end inner diameter of the middle cavity.

[0008] As a further optimization, the water inlet is a vertical waist hole, and the horizontal width of the water inlet is less than or equal to the radial spacing of the annular cavity.

[0009] As a further optimization, the acute angle between the horizontal tangent at the connection point between the annular cavity and the horizontal center axis of the water inlet and the horizontal axis of the water inlet is 10° to 30°.

[0010] As a further optimization, the taper of the inverted frustum-shaped middle cavity is 1:0.8-1:1.5.

[0011] As a further optimization, both the water inlet channel and the water purification channel are provided with internal threads.

[0012] As a further optimization, the clean water channel, the vortex forming portion and the centrifugal mechanism have the same vertical central axis.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The centrifugal filter device of the present invention has a simple structure and a reasonable design. The vortex is formed by the rotation of the cutting fluid after entering the vortex forming part. The structure of the centrifugal part is used to generate centrifugal force with the help of the rotation of the cutting fluid itself to separate impurities. No external centrifuge is required, which saves power. At the same time, continuous purification can be achieved, thereby improving purification efficiency.

[0015] 2. The centrifugal device is connected to the filtering device, and impurities can enter the filtering device for sedimentation. At the same time, the filtering device can prevent water from being retained from this side, so that the cutting fluid after centrifugal filtration can be transported through the clean water pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present invention.

[0017] Figure 2 It is a structural diagram of the centrifugal device of the present invention.

[0018] Figure 3 It is a structural diagram of the vortex forming mechanism of the present invention.

[0019] Figure 4 It is a cross-sectional view of the lower part of the vortex forming mechanism of the present invention.

[0020] Figure 5 It is a schematic axial cross-sectional view of the centrifugal device of the present invention.

[0021] Figure 6 This is a structural diagram of a centrifugal device according to another embodiment of the present invention.

[0022] In the figure, 1. filtering device; 2. centrifugal device; 3. connecting valve; 21. clean water channel; 22. vortex forming mechanism; 23. centrifugal mechanism; 221. vortex forming part; 222. water inlet part; 231. centrifugal part; 232. guide part; 233. impurity sedimentation part; 2211. water outlet pipe; 2212. annular cavity; 2213. water outlet; 2221. water inlet channel; 2222. water inlet; 2311. inverted frustum-shaped middle cavity. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention, which are combined with the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0024] Embodiment 1

[0025] like Figure 1 As shown, a centrifugal filter comprises a filter device 1, a centrifugal device 2 and a connecting valve 3, wherein the centrifugal device 2 and the filter device 1 are connected via the connecting valve 3. Figures 2 to 4 As shown, the centrifugal device 2 includes a clean water channel 21, a vortex forming mechanism 22 and a centrifugal mechanism 23. The vortex forming mechanism 22 includes a water inlet 222 and a vortex forming part 221. The vortex forming part 221 is a cylindrical body structure. The vortex forming part 221 is provided with a water outlet pipe 2211 that penetrates its body along its vertical axis direction. The upper end and the lower end of the water outlet pipe 2211 are respectively connected to the clean water channel 21 and the centrifugal mechanism 23. An annular cavity 2212 is provided between the water outlet pipe 2211 and the outer wall shell of the vortex forming part 221. The bottom end of the annular cavity 2212 penetrates the bottom end of the vortex forming part 221 to form a water outlet. The water outlet 2213 is connected with the centrifugal mechanism 23, the top of the annular cavity 2212 has a closed end, the water inlet 222 is arranged on one side of the vortex forming part 221, the water inlet 222 includes a water inlet channel 2221 and a water inlet 2222, the water inlet 2222 penetrates the outer wall shell of the vortex forming part 221 and is connected with the annular cavity 2212, the centrifugal mechanism 23 is connected with the filtering device 1 through the connecting valve 3, the centrifugal mechanism 23 is provided with a centrifugal part 231, the centrifugal part 231 has an inverted frustum body structure, and the centrifugal part 231 is provided with an inverted frustum shaped middle cavity 2311 penetrating its body.

[0026] like Figure 5As shown, the cutting fluid is pumped in through the pump and enters the vortex forming part 221 from the water inlet 2222. Since the cutting fluid has a large speed when entering, it can rotate in the annular cavity 2212, thereby forming a vortex. Since the cutting fluid continues to enter the annular cavity 2212, and the weight of the water body acts, the cutting fluid enters the inverted frustum-shaped middle cavity 2231 downward through the water outlet 2213 in a rotating state. With the help of the internal structure of the middle cavity, the cutting fluid water body can form its own rotating centrifugal force, which can filter and settle impurities above 20μm. The filtered water is sent upward through the centrifugal mechanism 23, the water outlet pipe 2211 of the vortex forming part 221 and the clean water channel 21. After settling, the impurities enter the filter device 1 through the connecting valve 3. The filter device 1 is a closed end to prevent the filtered water from being retained from this end. When the impurities in the filter device 1 reach a certain concentration and content, the filter device 1 can be disassembled and cleaned, and then reinstalled at the lower end of the connecting valve 3.

[0027] The centrifugal mechanism 23 also includes a guide portion 232 and an impurity settling portion 233. The guide portion 232 is arranged at the upper end of the centrifugal portion 231, and the upper end of the guide portion 232 is connected to the vortex forming portion 221 and communicates with the water outlet 2213. The impurity settling portion 233 is arranged at the lower end of the centrifugal portion 231, and the lower end of the impurity settling portion 233 is communicated with the connecting valve 3.

[0028] The inner diameter of the cavity of the guide portion 232 is equal to the inner diameter of the upper end of the inverted frustum-shaped middle cavity 2311 , and the inner diameter of the cavity of the impurity settling portion 233 is equal to the inner diameter of the lower end of the inverted frustum-shaped middle cavity 2311 .

[0029] The water inlet 2222 is a vertical waist hole, and the horizontal width of the water inlet 2222 is less than or equal to the radial spacing of the annular cavity 2212; the acute angle between the horizontal tangent at the connection point of the horizontal central axis of the annular cavity 2212 and the water inlet 2222 and the horizontal axis of the water inlet 2222 is 10° to 30°, and the water inlet 2222 is located on one side of the annular cavity 2212. The flow pattern of the cutting fluid entering the annular cavity 2212 is basically parallel to the tangent of the annular cavity 2212, which can reduce the vertical impact of the cutting fluid on the inner wall of the annular cavity 2212 after entering, and rotate in the annular cavity 2212 with greater kinetic energy, which is conducive to the formation of vortex and the improvement of centrifugal force.

[0030] The taper of the inverted frustum-shaped middle cavity 2311 is 1:0.8-1:1.5. According to the different properties and particle sizes of impurities contained in the cutting fluid, a centrifugal device 2 with an inverted frustum-shaped middle cavity 2311 with different tapers can be selected.

[0031] Both the water inlet channel 2221 and the clean water channel 21 are provided with internal threads for externally connecting a cutting fluid water inlet pipe and a clean water outlet pipe.

[0032] The clean water passage 21 , the vortex forming portion 221 and the centrifugal mechanism 23 have the same central axis.

[0033] Embodiment 2

[0034] The difference between this embodiment and the first embodiment is that Figure 6 As shown, the centrifugal part 231 with an inverted cone structure is the entire centrifugal mechanism 23, which does not include a guide part and an impurity sedimentation part. The centrifugal mechanism has a larger centrifugal place and centrifugal space for the cutting fluid, is more suitable for the treatment of large flow cutting fluid, and the treatment effect and efficiency are higher than those of embodiment 1.

[0035] As shown in the following table, Table 1 and Table 2 are the cutting fluid treatment effects of Example 1 and Example 2 respectively.

[0036] Table 1 Example 1 Cutting fluid treatment effect

[0037]

[0038] Table 2 Cutting fluid treatment effect of Example 2

[0039]

[0040]

[0041] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A centrifugal filter, characterized in that: The invention comprises a filtering device (1), a centrifugal device (2) and a connecting valve (3), wherein the centrifugal device (2) and the filtering device (1) are connected via the connecting valve (3), the centrifugal device (2) comprises a clean water channel (21), a vortex forming mechanism (22) and a centrifugal mechanism (23), the vortex forming mechanism (22) comprises a water inlet (222) and a vortex forming part (221), the vortex forming part (221) is a cylindrical structure, the vortex forming part (221) is provided with a water outlet pipe (2211) penetrating the body thereof along its vertical axis direction, the upper end and the lower end of the water outlet pipe (2211) are respectively connected to the clean water channel (21) and the centrifugal mechanism (23), an annular cavity (2212) is provided between the water outlet pipe (2211) and the outer wall shell of the vortex forming part (221), the annular cavity (2212) ) penetrates the bottom end of the vortex forming portion (221) to form a water outlet (2213), the water outlet (2213) being in communication with the centrifugal mechanism (23), the top end of the annular cavity (2212) having a closed end, the water inlet (222) being arranged on one side of the vortex forming portion (221), the water inlet (222) comprising a water inlet channel (2221) and a water inlet (2222), the water inlet (2222) penetrating the outer wall shell of the vortex forming portion (221) and being in communication with the annular cavity (2212), the centrifugal mechanism (23) being connected to the filtering device (1) via a connecting valve (3), the centrifugal mechanism (23) being provided with a centrifugal portion (231), the centrifugal portion (231) having an inverted frustum structure, the centrifugal portion (231) being provided with an inverted frustum shaped middle cavity (2311) penetrating its body.

2. The centrifugal filter according to claim 1, characterized in that: The centrifugal mechanism (23) further comprises a flow guide portion (232) and an impurity settling portion (233); the flow guide portion (232) is arranged at the upper end of the centrifugal portion (231); the upper end of the flow guide portion (232) is connected to the vortex forming portion (221) and communicates with the water outlet (2213); the impurity settling portion (233) is arranged at the lower end of the centrifugal portion (231); the lower end of the impurity settling portion (233) is communicated with the connecting valve (3).

3. The centrifugal filter according to claim 2, characterized in that: The inner diameter of the cavity of the guide portion (232) is equal to the inner diameter of the upper end of the inverted frustum-shaped middle cavity (2311), and the inner diameter of the cavity of the impurity settling portion (233) is equal to the inner diameter of the lower end of the inverted frustum-shaped middle cavity (2311).

4. The centrifugal filter according to claim 1 or 2, characterized in that: The water inlet (2222) is a vertical waist hole, and the horizontal width of the water inlet (2222) is less than or equal to the radial spacing of the annular cavity (2212).

5. The centrifugal filter according to claim 4, characterized in that: The acute angle between the horizontal tangent line at the connection point between the annular cavity (2212) and the horizontal central axis of the water inlet (2222) and the horizontal axis of the water inlet (2222) is 10° to 30°.

6. The centrifugal filter according to claim 4, characterized in that: The taper of the inverted frustum-shaped middle cavity (2311) is 1:0.8-1:1.

5.

7. The centrifugal filter according to claim 4, characterized in that: The water inlet channel (2221) and the clean water channel (21) are both provided with internal threads.

8. The centrifugal filter according to claim 4, characterized in that: The clean water channel (21), the vortex forming portion (221) and the centrifugal mechanism (23) have the same central axis.

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