A precious metal suction filter tank

Abstract

This utility model provides a vacuum filtration tank for precious metals, relating to the technical field of vacuum filtration equipment. It includes an upper tank body, a lower tank body, a filter plate, and a filter cloth sealing strip. The lower tank body is located below the upper tank body and is detachably connected to it. A negative pressure port is provided on the side wall of the lower tank body, and a liquid discharge port is provided at the bottom of the lower tank body. The filter plate is disposed on the lower tank body, and a filter cloth is disposed above the filter plate. The edge of the filter cloth is located between the upper tank body and the filter plate. The filter cloth sealing strip is pressed tightly against the edge of the filter cloth by the upper tank body. During assembly, the vacuum filtration tank for precious metals in this utility model allows the filter cloth to be directly laid on the filter plate, and the filter cloth is fixed under the pressure of the upper tank body against the filter plate, simplifying the fixing method. Furthermore, the filter cloth sealing strip between the edge of the filter cloth and the bottom of the upper tank body seals the gap between the filter plate and the upper tank body, ensuring the filtration effect.

Description

Technical Field

[0001] This utility model relates to the field of vacuum filtration equipment technology, specifically to a vacuum filtration tank for precious metals. Background Technology

[0002] The production of precious metals requires extensive filtration operations, involving a wide variety of materials and demanding filtration requirements. This filtration typically utilizes a vacuum filtration tank for precious metals. Traditional vacuum filtration tanks for precious metals are mostly one-piece structures with an internal filter plate. To ensure filtration efficiency, these tanks require the use of small-pore filter bags. The filter bags are usually positioned above the filter plate to filter a portion of the material in the mixed solution. Because traditional vacuum filtration tanks are one-piece structures, and the filter plate is located inside, fixing and replacing the filter bags is extremely inconvenient. Furthermore, it is difficult to form a good seal between the outer edge of the filter bag and the filter plate. If the seal fails, the outer edge of the filter bag will always be leaking, resulting in a low ultimate vacuum and significantly limited filtration performance. Utility Model Content

[0003] The purpose of this invention is to provide a vacuum filter for precious metals, which solves the problems existing in the prior art and improves the filtration performance and the convenience of replacing the filter cloth.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] A filtration tank for precious metals includes an upper tank body, a lower tank body, a filter plate, and a filter cloth sealing strip. The bottom of the upper tank body has an opening. The lower tank body is located below the upper tank body and is detachably connected to it. The top opening of the lower tank body communicates with the bottom opening of the upper tank body. A negative pressure port is provided on the side wall of the lower tank body, and a liquid discharge port is provided at the bottom of the lower tank body. The filter plate is disposed on the lower tank body, and a filter cloth is disposed above the filter plate. The edge of the filter cloth is located between the upper tank body and the filter plate. The filter cloth sealing strip is annular and is pressed tightly by the upper tank body above the edge of the filter cloth.

[0006] As one embodiment, the filter plate and the lower tank are detachably disposed. The precious metal filtration tank further includes a sealing strip, which includes an upper sealing strip and a lower sealing strip. The upper sealing strip is located between the upper tank and the filter plate and is located outside the filter cloth sealing strip. The lower sealing strip is located between the filter plate and the lower tank.

[0007] As one embodiment, the bottom end of the upper tank has an upper annular flange, and the top end of the lower tank has a lower annular flange with an axial cross-sectional shape of L. The lower annular flange includes a vertical plate and a horizontal plate connected in an L-shape. The upper annular flange and the filter plate are both clearance-fitted with the vertical plate, and the filter plate is pressed between the upper annular flange and the horizontal plate.

[0008] As one embodiment, the lower surface of the upper annular flange is provided with an upper annular groove, and the upper sealing strip is embedded in the upper annular groove and exposed on the lower surface of the upper annular flange.

[0009] As one embodiment, the upper surface of the horizontal plate is provided with a lower annular groove, and the lower sealing strip is embedded in the lower annular groove and exposed on the upper surface of the horizontal plate.

[0010] In one embodiment, the upper groove and the lower groove are fixed using clamps, which are fixed to the upper annular flange and the lower annular flange.

[0011] As one embodiment, an air inlet is provided on the side wall of the lower tank, and an air inlet valve and a negative pressure extraction valve are respectively provided on the air inlet and the negative pressure extraction port.

[0012] As one embodiment, the bottom of the lower tank is funnel-shaped with a diameter that gradually decreases from top to bottom, and the bottom of the funnel-shaped body is provided with the liquid outlet; a liquid outlet valve is provided at the liquid outlet.

[0013] In one embodiment, the air inlet and the negative pressure extraction port are located at the radial ends of the lower tank body. An inclined baffle is provided above both the air inlet and the negative pressure extraction port. The top end of the inclined baffle is fixed to the inner wall of the lower tank body, and the bottom end of the inclined baffle is inclined inward.

[0014] As one embodiment, the bottom of the lower tank is provided with multiple support legs.

[0015] The present invention has the following technical advantages over the prior art:

[0016] This invention replaces the traditional one-piece precious metal filtration tank by dividing it into an upper tank and a lower tank. During assembly, the filter cloth can be directly laid on the filter plate, and the filter cloth is fixed by the pressure of the upper tank on the filter plate. This fixing method is simpler and facilitates the replacement of filter cloths with different filtration capacities for different materials, improving usability. Furthermore, a filter cloth sealing strip is provided between the edge of the filter cloth and the bottom of the upper tank to seal the gap between the filter plate and the upper tank, ensuring filtration efficiency and further pressing the filter cloth firmly onto the filter plate, preventing filter failure due to cloth movement.

[0017] The technical effects that other technical solutions in this utility model can achieve compared with the prior art are described in the specific embodiments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of a precious metal filtration tank in one embodiment of the present invention;

[0020] Figure 2 This is a structural schematic diagram of the connection position between the upper and lower tanks in one embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Upper tank; 2. Lower tank; 3. Filter plate; 4. Filter cloth; 5. Filter cloth sealing strip; 6. Upper sealing strip; 7. Lower sealing strip; 8. Upper annular flange; 9. Lower annular flange; 91. Vertical plate; 92. Horizontal plate; 10. Clamp; 11. Air inlet; 12. Negative pressure extraction port; 13. Air inlet valve; 14. Negative pressure extraction valve; 15. Liquid outlet; 16. Liquid outlet valve; 17. Support leg. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The purpose of this invention is to provide a vacuum filter for precious metals, which solves the problems existing in the prior art and improves the filtration performance and the convenience of replacing the filter cloth.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 , Figure 2 As shown, this embodiment provides a vacuum filtration tank for precious metals, including an upper tank body 1, a lower tank body 2, a filter plate 3, and a filter cloth sealing strip 5. The upper tank body 1 has an opening at its bottom and a discharge port at its top, with a sealing cap at the discharge port. The lower tank body 2 is located below the upper tank body 1 and is detachably connected to it. The top opening of the lower tank body 2 is directly opposite to and communicates with the bottom opening of the upper tank body 1, and the diameters of the top opening of the lower tank body 2 and the bottom opening of the upper tank body 1 are equal. After the upper tank body 1 and the lower tank body 2 are connected, a cylindrical filter cavity is formed. A negative pressure port 12 is provided on the side wall of the lower tank body 2, and a liquid discharge port 15 is provided at the bottom of the lower tank body 2. Vertically, the area between the negative pressure port 12 and the liquid discharge port 15 is used to accommodate liquid drawn out under negative pressure, and the volume of this area is greater than the volume of the upper tank body 1. A filter plate 3 is mounted on the lower tank 2 and can be detachably connected to the lower tank 2 or fixed to the top opening of the lower tank 2. The filter plate 3 has filter holes, and a filter cloth 4 is mounted above it. The filter cloth 4 has micropores smaller than those on the filter plate 3. The diameter of the filter cloth 4 is larger than the diameter of the filter cavity, and the edge of the filter cloth 4 is located between the upper tank 1 and the filter plate 3. An annular filter cloth sealing strip 5 is mounted above the filter cloth 4, and the inner diameter of the filter cloth sealing strip 5 is not less than the diameter of the filter cavity. The filter cloth sealing strip 5 is pressed tightly against the edge of the filter cloth 4 by the upper tank 1. If the filter cloth sealing strip 5 is not provided, after the upper tank 1 presses the filter cloth 4 onto the filter plate 3, there will be a small gap between the upper tank 1 and the filter plate 3. The thickness of the filter cloth sealing strip 5 must be greater than the thickness of this small gap, so that the filter cloth sealing strip 5, based on its own flexibility, can fill this small gap and achieve a seal.

[0027] In use, the negative pressure port 12 is connected to the negative pressure equipment, and the liquid outlet 15 is closed. After adding the solution to be filtered into the upper tank 1, the negative pressure equipment is turned on to draw negative pressure into the lower tank 2. Under the action of negative pressure, the liquid portion of the solution and other parts that can pass through the filter cloth 4 are drawn into the lower tank 2, and the filter cloth 4 intercepts the material to be filtered. Then, the negative pressure equipment is disconnected from the negative pressure port 12, air enters the lower tank 2 through the negative pressure port 12, the liquid outlet 15 is opened, and the liquid is discharged through the liquid outlet 15, completing one filtration operation.

[0028] Therefore, this embodiment divides the precious metal filtration tank into an upper tank body 1 and a lower tank body 2, replacing the traditional one-piece precious metal filtration tank in the prior art. In this embodiment, the precious metal filtration tank can directly lay the filter cloth 4 on the filter plate 3 during assembly, and the filter cloth 4 is fixed by the pressure of the upper tank body 1 on the filter plate 3. The fixing method is simpler and it is also convenient to replace the filter cloth 4 with different filtration capabilities for different materials, improving the convenience of use. In addition, in this embodiment, a filter cloth sealing strip 5 is provided between the edge of the filter cloth 4 and the bottom of the upper tank body 1, which can seal the gap between the filter plate 3 and the upper tank body 1 to ensure the filtration effect. At the same time, it further presses the filter cloth 4 tightly on the filter plate 3, which can prevent the filter cloth 4 from moving and causing filtration failure.

[0029] In this embodiment, the filter plate 3 and the lower tank 2 are detachable, making it easier to replace and clean the filter plate 3 and the lower tank 2. The precious metal filtration tank also includes sealing strips, including an upper sealing strip 6 and a lower sealing strip 7. The upper sealing strip 6 is located between the upper tank 1 and the filter plate 3, and is located outside the filter cloth sealing strip 5 to improve the sealing between the filter plate 3 and the upper tank 1; the lower sealing strip 7 is located between the filter plate 3 and the lower tank 2 to improve the sealing between the filter plate 3 and the lower tank 2.

[0030] In this embodiment, the bottom end of the upper tank 1 has an upper annular flange 8, and the top end of the lower tank 2 has a lower annular flange 9 with an L-shaped axial cross-section. The lower annular flange 9 includes a vertical plate 91 (the vertical plate 91 is cylindrical) and a horizontal plate 92 connected in an L-shape. The vertical plate 91 is located around the upper annular flange 8 and the filter plate 3. The upper annular flange 8 and the filter plate 3 are both clearance-fitted with the vertical plate 91, and the filter plate 3 is pressed between the upper annular flange 8 and the horizontal plate 92. In this embodiment, by setting the upper annular flange 8 and the lower annular flange 9 on the upper tank 1 and the lower tank 2 respectively, on the one hand, the upper annular flange 8 and the horizontal plate 92 facilitate the pressing of the filter cloth 4 and the filter cloth sealing strip 5; on the other hand, the vertical plate 91 limits the position of the filter plate 3 and the upper tank 1. During installation, the filter plate 3 and the upper tank 1 can be easily coaxially installed on the lower tank 2, improving the convenience of installation.

[0031] In this embodiment, an upper annular groove is provided on the lower surface of the upper annular flange 8. The upper sealing strip 6 is embedded in the upper annular groove and exposed on the lower surface of the upper annular flange 8. The thickness of the upper sealing strip exposed on the lower surface of the upper annular flange 8 is greater than the gap between the lower surface of the upper groove 1 and the filter plate 3.

[0032] In this embodiment, the upper surface of the horizontal plate 92 is provided with a lower annular groove, the lower sealing strip 7 is embedded in the lower annular groove and exposed on the upper surface of the horizontal plate 92, and the thickness of the lower sealing strip exposed on the upper surface of the horizontal plate 92 is greater than the gap between the upper surface of the lower groove 2 and the filter plate 3.

[0033] In this embodiment, the upper groove 1 and the lower groove 2 are fixed using clamps 10, which are fixed to the upper annular flange 8 and the lower annular flange 9. The clamps 10 are commonly used clamping devices in the art, and their structure and usage will not be described in detail in this embodiment.

[0034] In this embodiment, an air inlet 11 is also provided on the side wall of the lower tank 2. An air inlet valve 13 and a negative pressure extraction valve 14 are respectively provided on the air inlet 11 and the negative pressure extraction port 12. In this embodiment, a separate air inlet 11 is provided, which eliminates the need to repeatedly disassemble the negative pressure extraction port 12 and the negative pressure extraction equipment, thereby improving the operational convenience of the filtration operation. In this embodiment, the air inlet 11 and the negative pressure extraction port 12 are located at the radial ends of the lower tank 2. An inclined baffle is provided above both the air inlet 11 and the negative pressure extraction port 12. The top of the inclined baffle is fixed to the inner wall of the lower tank 2, and the bottom of the inclined baffle is inclined inward to prevent liquid from flowing into the liquid inlet and the negative pressure extraction port 12.

[0035] In this embodiment, the bottom of the lower tank 2 is a funnel shape with a diameter that gradually decreases from top to bottom. A drain port 15 is provided at the bottom of the funnel shape. The funnel shape design makes it easier for liquid to be discharged from the drain port 15. A drain valve 16 is provided at the drain port 15.

[0036] In this embodiment, the bottom of the lower tank 2 is provided with multiple support legs 17 to support the lower tank 2, upper tank 1 and other structures.

[0037] After one or more filtrations, precious metals need to be cleaned using a vacuum filter tank. For example, after precious metal filtration, during cleaning, first open the vacuum port 12, close the air inlet 11 and the drain valve 16, and rinse the filter cloth 4 with detergent until no precious metal solution remains in the filter cloth 4 and the upper tank 1; then close the vacuum port, open the air inlet 11, loosen the clamps 10, remove the upper sealing strip 6, the filter cloth sealing strip 5, and the filter cloth 4, and rinse the filter plate 3 with detergent until no precious metal solution remains in the filter plate 3. Remove the filter plate 3, and rinse the upper annular flange 8 and the lower sealing strip 7 of the lower tank 2 with detergent. Then open the drain port 15 to rinse the lower tank 2. After cleaning, return all components to their original positions without using the clamps 10 to prevent them from being subjected to high pressure for an extended period of time. After a period of use, check the sealing status of the upper sealing strip 6, the lower sealing strip 7, and the filter cloth sealing strip 5. Replace the upper sealing strip 6, the lower sealing strip 7, and the filter cloth sealing strip 5 as appropriate to ensure sealing.

[0038] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0039] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A noble metal suction filter tank characterized by comprising: include: An upper tank body, wherein the bottom of the upper tank body has an opening; The lower tank is located below the upper tank and is detachably connected to the upper tank; the top opening of the lower tank communicates with the bottom opening of the upper tank; a negative pressure port is provided on the side wall of the lower tank; and a liquid discharge port is provided at the bottom of the lower tank. A filter plate is disposed on the lower tank, and a filter cloth is disposed above the filter plate; the edge of the filter cloth is located between the upper tank and the filter plate. And a filter cloth sealing strip, the filter cloth sealing strip being annular, the filter cloth sealing strip being pressed against the edge of the filter cloth by the upper groove body.

2. The sintering apparatus according to claim 1, wherein The filter plate and the lower tank are detachably mounted. The precious metal filtration tank also includes a sealing strip, which includes an upper sealing strip and a lower sealing strip. The upper sealing strip is located between the upper tank and the filter plate and is located outside the filter cloth sealing strip. The lower sealing strip is located between the filter plate and the lower tank.

3. The precious metal filtration tank according to claim 2, characterized in that, The bottom end of the upper tank has an upper annular flange, and the top end of the lower tank has a lower annular flange with an axial cross-sectional shape of L. The lower annular flange includes a vertical plate and a horizontal plate connected in an L-shape. The upper annular flange and the filter plate are both clearance-fitted with the vertical plate, and the filter plate is pressed between the upper annular flange and the horizontal plate.

4. The precious metal filtration tank according to claim 3, characterized in that, The lower surface of the upper annular flange is provided with an upper annular groove, and the upper sealing strip is embedded in the upper annular groove and exposed on the lower surface of the upper annular flange.

5. The precious metal filtration tank according to claim 4, characterized in that, The upper surface of the horizontal plate is provided with a lower annular groove, and the lower sealing strip is embedded in the lower annular groove and exposed on the upper surface of the horizontal plate.

6. The precious metal filtration tank according to claim 3, characterized in that, The upper groove and the lower groove are fixed with clamps, which are fixed to the upper annular flange and the lower annular flange.

7. The precious metal filtration tank according to claim 1, characterized in that, An air inlet is provided on the side wall of the lower tank, and an air inlet valve and a negative pressure extraction valve are respectively provided on the air inlet and the negative pressure extraction port.

8. The precious metal filtration tank according to claim 1, characterized in that, The bottom of the lower tank is funnel-shaped with a diameter that gradually decreases from top to bottom, and the bottom of the funnel-shaped body is provided with the liquid outlet; a liquid outlet valve is provided at the liquid outlet.

9. The precious metal filtration tank according to claim 7, characterized in that, The air inlet and the negative pressure extraction port are located at the radial ends of the lower tank. An inclined baffle is provided above both the air inlet and the negative pressure extraction port. The top of the inclined baffle is fixed to the inner wall of the lower tank, and the bottom of the inclined baffle is inclined inward.

10. The precious metal filtration tank according to claim 1, characterized in that, The bottom of the lower tank is equipped with multiple support legs.

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