Liquid seal protection type solid-liquid separator

Abstract

The utility model belongs to the technical field of solid-liquid separation equipment for precious metal powder material preparation, and particularly relates to a liquid seal protection type solid-liquid separator. A feeding pipeline and a liquid outlet pipeline are arranged on the left side and the right side of a stepped storage body respectively, and a liquid pumping head, a flow sensor and a feeding switch valve are sequentially installed on the feeding pipeline. The tail end of the liquid outlet pipeline is connected with the negative-pressure liquid pumping valve and the positive-pressure flushing valve through different pipelines respectively, the top of the stepped storage body is covered with the sealing cover, and a pressure sensor is arranged on the sealing cover; the material collecting cone is fixed to an outlet in the bottom of the step type material storage body, an outlet in the bottom of the material collecting cone is communicated with the negative pressure material storage barrel through the automatic discharging valve and the material storage valve, and a negative pressure valve is arranged on the negative pressure material storage barrel. The flow guide body is fixed in the stepped material storage body, and a filter body is arranged in the flow guide body; according to the device, solid-liquid separation and valuable material recovery of raney nickel can be realized on the premise of ensuring that the raney nickel is safe and efficient in the deionized water cleaning process, and the anaerobic safety of the raney nickel is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of solid-liquid separation equipment for preparing precious metal powder materials, and particularly relates to a liquid-sealed protective solid-liquid separator. Background Art

[0002] Raney nickel is a solid heterogeneous catalyst composed of fine grains of nickel-aluminum alloy with a porous structure. It was first used as a catalyst by American engineer Maury Raney in the hydrogenation process of vegetable oil. The high catalytic activity of Raney nickel comes from the catalytic properties of nickel itself and its porous structure, which is derived from the removal of aluminum from the nickel-aluminum alloy with a concentrated sodium hydroxide solution. This process is called leaching. Since the leaching reaction brings about the activity of the catalyst, and the hydrogen produced is stored in the catalyst, it is also called activation. During the activation process, due to the gradual increase in its surface area and the continuous adsorption of hydrogen produced by the leaching reaction, the Raney nickel formed after activation has moderate flammability. Therefore, the reaction in which Raney nickel participates should be handled in an inert gas or an oxygen-free environment under liquid. After activation, the resulting catalyst should be washed with distilled water at room temperature in order to remove any residual sodium aluminate. Deoxygenated water is the first choice for storing Raney nickel because it can prevent the oxidation of Raney nickel and reduce its combustion risk. Therefore, the Raney nickel usually supplied is a 50% muddy substance mixed in water, which cannot be exposed to the air. The muddy substance is put into a reagent bottle and then put into a packaging box, which is filled with chemically stable vermiculite for transportation. Therefore, how to achieve solid-liquid separation in an anaerobic environment during the chemical synthesis of Raney nickel is an urgent problem to be solved in industrial production. Summary of the invention

[0003] In order to overcome the above problems, the utility model provides a liquid-sealed protective solid-liquid separator to ensure that Raney nickel can be safely and efficiently cleaned with deionized water while achieving solid-liquid separation and valuable material recovery, thereby ensuring its anaerobic safety.

[0004] A liquid-sealed protective solid-liquid separator comprises a sealing cover 1, a stepped storage body 3, a basket filter body 4, a support leg 5, a collection cone 7, and a negative pressure storage barrel 8, wherein a feed pipeline 31 and a liquid outlet pipeline 32 are respectively provided on the left and right sides of the stepped storage body 3, a liquid extraction head 311, a flow sensor 312 and a feed switch valve 313 are sequentially installed on the feed pipeline 31, and the end of the liquid outlet pipeline 32 is respectively connected to a negative pressure liquid extraction valve 321 and a positive pressure flushing valve 322 through different pipelines, the sealing cover 1 is covered and fixed on the top of the stepped storage body 3, and a pressure sensor 11 is provided on it; the collection cone 7 is fixed at the bottom outlet of the stepped storage body 3, and the bottom outlet of the collection cone 7 is connected to the negative pressure storage barrel 8 through an automatic discharge valve 71 and a storage valve 811, and a negative pressure valve 812 is provided on the negative pressure storage barrel 8;

[0005] The basket filter body 4 includes a flow guide 42 and a filter body 43 , wherein the flow guide 42 is fixed in the stepped material storage body 3 , and the filter body 43 is installed in the flow guide 42 .

[0006] An upper supporting flange 33 and a lower supporting flange 34 are respectively disposed at the upper and lower ends of the stepped material storage body 3 .

[0007] The upper and lower ends of the flow guide 42 are respectively installed on the upper support flange 33 and the lower support flange 34 in the stepped storage body 3 through the upper sealing flange 41 and the lower sealing flange 44 , and are fixed by fastening bolts 45 .

[0008] A visual observation window 35 is provided on the side wall of the stepped storage body 3 .

[0009] The sealing cover 1 is covered and fixed to the top of the stepped material storage body 3 through the upper quick-opening clamp 2, and the collecting cone 7 is fixed to the bottom outlet of the stepped material storage body 3 through the lower quick-opening clamp 6.

[0010] The negative pressure material storage barrel 8 includes a barrel cover 81 and a barrel body 82 , wherein the barrel cover 81 is fixed on the top of the barrel body 82 , and a material storage valve 811 and a negative pressure valve 812 are installed on the barrel cover 81 , and the material storage valve 811 is connected to the discharge valve 71 at the bottom of the gathering cone 7 .

[0011] The barrel cover 81 is provided with a loading and unloading enclosure 813 .

[0012] The supporting legs 5 are installed at the steps of the stepped storage body 3 .

[0013] Beneficial effects of the utility model:

[0014] The utility model can achieve solid-liquid separation of high-value products such as easily oxidized catalysts such as Raney nickel when both the solid-liquid separator and the storage barrel are in a negative pressure and low-oxygen environment. At the same time, its liquid-sealed anti-oxidation protection solid-liquid separation process ensures that the easily oxidized catalyst is always in a liquid environment during the separation process. The equipment is simple to operate and convenient to maintain, providing equipment guarantee for the industrial production of easily oxidized catalysts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings used in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model

[0017] Figure 2 This is a schematic diagram of the basket filter structure of the utility model

[0018] 1—sealing cover; 2—upper quick-opening clamp; 3—step-type storage body; 4—basket-type filter body; 5—support legs; 6—lower quick-opening clamp; 7—aggregate cone; 8—negative pressure storage barrel;

[0019] 11—pressure sensor;

[0020] 31—feeding pipeline; 32—liquid outlet pipeline; 33—upper supporting flange; 33—lower supporting flange; 33—visual observation window; 311—liquid extraction head; 312—flow sensor; 313—feeding switch valve; 321—negative pressure liquid extraction valve; 322—positive pressure flushing valve;

[0021] 41—upper sealing flange; 42—flow guide; 43—filter body; 44—lower sealing flange; 45—fastening bolts;

[0022] 71—discharge valve;

[0023] 81—barrel body; 82—barrel cover assembly; 811—storage valve; 812—negative pressure valve; 813—loading and unloading enclosure. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0025] Example 1

[0026] A liquid-sealed protective solid-liquid separator comprises a sealing cover 1, a stepped storage body 3, a basket filter body 4, a support leg 5, a collection cone 7, and a negative pressure storage barrel 8, wherein a feed pipeline 31 and a liquid outlet pipeline 32 are respectively provided on the left and right sides of the stepped storage body 3, a liquid extraction head 311, a flow sensor 312 and a feed switch valve 313 are sequentially installed on the feed pipeline 31, and the end of the liquid outlet pipeline 32 is respectively connected to a negative pressure liquid extraction valve 321 and a positive pressure flushing valve 322 through different pipelines, the sealing cover 1 is covered and fixed on the top of the stepped storage body 3, and a pressure sensor 11 is provided on it; the collection cone 7 is fixed at the bottom outlet of the stepped storage body 3, and the bottom outlet of the collection cone 7 is connected to the negative pressure storage barrel 8 through an automatic discharge valve 71 and a storage valve 811, and a negative pressure valve 812 is provided on the negative pressure storage barrel 8;

[0027] The basket filter body 4 includes a flow guide 42 and a filter body 43 , wherein the flow guide 42 is fixed in the stepped material storage body 3 , and the filter body 43 is installed in the flow guide 42 .

[0028] An upper supporting flange 33 and a lower supporting flange 34 are respectively disposed at the upper and lower ends of the stepped material storage body 3 .

[0029] The upper and lower ends of the flow guide 42 are respectively installed on the upper support flange 33 and the lower support flange 34 in the stepped storage body 3 through the upper sealing flange 41 and the lower sealing flange 44 , and are fixed by fastening bolts 45 .

[0030] A visual observation window 35 is provided on the side wall of the stepped storage body 3 .

[0031] The sealing cover 1 is covered and fixed to the top of the stepped material storage body 3 through the upper quick-opening clamp 2, and the collecting cone 7 is fixed to the bottom outlet of the stepped material storage body 3 through the lower quick-opening clamp 6.

[0032] The negative pressure material storage barrel 8 includes a barrel cover 81 and a barrel body 82 , wherein the barrel cover 81 is fixed on the top of the barrel body 82 , and a material storage valve 811 and a negative pressure valve 812 are installed on the barrel cover 81 , and the material storage valve 811 is connected to the discharge valve 71 at the bottom of the gathering cone 7 .

[0033] The barrel cover 81 is provided with a loading and unloading enclosure 813 .

[0034] The supporting legs 5 are installed at the steps of the stepped storage body 3 .

[0035] Example 2

[0036] See also Figure 1 , Figure 2As shown, the utility model is composed of a sealing cover 1, an upper quick-opening clamp 2, a stepped material storage body 3, a basket filter body 4, a leg 5, a lower quick-opening clamp 6, a collection cone 7, and a negative pressure material storage barrel 8. A pressure sensor 11 is installed at the bottom of the sealing cover 1; a feed pipeline 31, a liquid outlet pipeline 32 and a visual observation window 35 are arranged on the outer surface of the stepped material storage body 3, and an upper support flange 33 and a lower support flange 34 are built in. A liquid extraction head 311, a flow sensor 312 and a feed switch valve 313 are installed on the feed pipeline 31 in sequence, and a negative pressure liquid extraction valve 321 and a positive pressure flushing valve 322 are installed in parallel on the liquid outlet pipeline 32; an automatic discharge valve 71 is installed at the bottom of the collection cone 7; the negative pressure material storage barrel 8 is composed of a barrel cover 81 and a barrel body 82, and a storage valve 811, a negative pressure valve 812 and a loading and unloading enclosure 813 are installed on the top of the barrel cover 81, and the barrel cover 81 and the barrel body 82 are connected by threads. The basket filter body 4 comprises an upper sealing flange 41, a guide body 42 (for guiding the flow of fluid, but not for solid-liquid separation, i.e., this section of fluid is not filtered), a filter body 43, a lower sealing flange 44, and fastening bolts 45. The filter body 43 can be an integrated sintered mesh, a flexible filter cloth, etc. The basket filter body 4 is installed on the built-in upper support flange 33 and lower support flange 34 of the stepped storage body 3 through the upper sealing flange 41 and the lower sealing flange 44, and is fixed by fastening bolts 45; the sealing cover 1 is fixed to the top of the stepped storage body 3 through the upper quick-opening clamp 2; the aggregate cone 7 is fixed to the bottom of the stepped storage body 3 through the lower quick-opening clamp 6; the legs 5 are installed at the step of the stepped storage body 3; the storage valve 811 of the negative pressure storage barrel 8 is connected to the discharge valve 71 at the bottom of the aggregate cone 7.

[0037] Working process of this utility model:

[0038] A certain level of liquid is contained in the aggregate cone 7 to ensure that the solids entering the aggregate cone 7 after filtration are always in the liquid;

[0039] The negative pressure liquid extraction valve 321 on the liquid outlet pipeline 32 of the stepped material storage body 3 is opened, and the negative pressure starts to work, so that the basket filter body 4 is in a negative pressure state to achieve negative pressure filtration; the feed switch valve 313 is opened, and the liquid extraction head 311 of the feed pipeline 31 extracts the reaction liquid in the leaching device, and the fluid containing the easily oxidized catalyst enters the stepped material storage body 3 through the flow sensor 312 and the feed switch valve 313, and then passes through the upper sealing flange 41, the guide body 42, the filter body 43, and the lower sealing flange 44 of the basket filter body 4 in sequence. This process is a solid-liquid separation process. A part of the filtered liquid is discharged through the negative pressure liquid extraction valve 321 on the liquid outlet pipeline 32 through the action of the guide body 42. After the entire fluid enters, the solid materials such as Raney nickel and other easily oxidized catalyst solids contained are intercepted and continuously fall into the aggregate cone 7. Another part of the filtered liquid passes through the filter body 43 and enters the aggregate cone 7, and then enters the negative pressure storage barrel 8 through the aggregate cone 7;

[0040] When the flow rate of the flow sensor 312 on the feed pipeline 31 drops sharply to near zero, the feed switch valve 313 is closed; since the liquid outlet pipeline 32 is placed at the height of the guide body 42 of the basket filter body 4, the liquid level control can be effectively achieved to prevent the easily oxidized catalyst from being exposed to the air.

[0041] Open the negative pressure valve 812 of the negative pressure storage barrel 8 to start pumping negative pressure, then open the discharge valve 71 at the bottom of the aggregate cone 7 and the storage valve 811 of the negative pressure storage barrel 8, so that the easily oxidized catalyst containing a certain amount of liquid in the aggregate cone 7 enters the negative pressure storage barrel 8, close the negative pressure liquid extraction valve 321 after the discharge, open the positive pressure flushing valve 322 connected to the deionized water source, and flush the basket filter 4 with deionized water, so that the residual material in the filter 43 is flushed into the aggregate cone 7 for recovery, and the flushing liquid enters the negative pressure storage barrel 8 through the aggregate cone 7 for collection; close the positive pressure flushing valve 322, the storage valve 811 and the negative pressure valve 812, and replace the negative pressure storage barrel 8. During the solid-liquid separation process, if the pressure sensor 11 shows that the pressure rises from negative pressure to zero pressure, consider replacing the filter 43 of the basket filter 4.

[0042] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the protection scope of the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, any technician familiar with the technical field can make equivalent replacements or changes based on the technical scheme and the utility model concept of the present invention within the technical scope disclosed by the present invention. These simple variations all belong to the protection scope of the present invention.

[0043] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0044] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A liquid-sealed protective solid-liquid separator, characterized in that: The invention comprises a sealing cover (1), a stepped material storage body (3), a basket filter body (4), a support leg (5), a material collection cone (7), and a negative pressure material storage barrel (8), wherein a feed pipeline (31) and a liquid outlet pipeline (32) are respectively provided on the left and right sides of the stepped material storage body (3), a liquid extraction head (311), a flow sensor (312) and a feed switch valve (313) are sequentially installed on the feed pipeline (31), and the end of the liquid outlet pipeline (32) is respectively connected to the liquid outlet pipeline (32) through different pipelines. The sealing cover (1) is connected to the negative pressure liquid extraction valve (321) and the positive pressure flushing valve (322), and is covered and fixed on the top of the stepped material storage body (3), and a pressure sensor (11) is provided on the sealing cover; the collecting cone (7) is fixed at the bottom outlet of the stepped material storage body (3), and the bottom outlet of the collecting cone (7) is connected to the negative pressure material storage barrel (8) through the automatic discharge valve (71) and the material storage valve (811), and the negative pressure material storage barrel (8) is provided with a negative pressure valve (812); The basket-type filter body (4) comprises a flow guide (42) and a filter body (43), wherein the flow guide (42) is fixed in the stepped material storage body (3), and the filter body (43) is installed in the flow guide (42).

2. A liquid-sealed protective solid-liquid separator according to claim 1, characterized in that: An upper supporting flange (33) and a lower supporting flange (34) are respectively provided at the upper and lower ends of the stepped material storage body (3).

3. A liquid-sealed protective solid-liquid separator according to claim 2, characterized in that: The upper and lower ends of the flow guide (42) are respectively mounted on an upper support flange (33) and a lower support flange (34) in the stepped material storage body (3) via an upper sealing flange (41) and a lower sealing flange (44), and are fixed via fastening bolts (45).

4. The liquid-sealed protective solid-liquid separator according to claim 1, characterized in that: A visual observation window (35) is provided on the side wall of the stepped material storage body (3).

5. The liquid-sealed protective solid-liquid separator according to claim 1, characterized in that: The sealing cover (1) is covered and fixed to the top of the stepped material storage body (3) via an upper quick-opening clamp (2), and the collecting cone (7) is fixed to the bottom outlet of the stepped material storage body (3) via a lower quick-opening clamp (6).

6. The liquid-sealed protective solid-liquid separator according to claim 1, characterized in that: The negative pressure material storage barrel (8) comprises a barrel cover (81) and a barrel body (82), wherein the barrel cover (81) is fixed on the top of the barrel body (82), and a material storage valve (811) and a negative pressure valve (812) are installed on the barrel cover (81), and the material storage valve (811) is connected to a discharge valve (71) at the bottom of the material collection cone (7).

7. The liquid-sealed protective solid-liquid separator according to claim 6, characterized in that: The barrel cover (81) is provided with a loading and unloading enclosure plate (813).

8. The liquid-sealed protective solid-liquid separator according to claim 1, characterized in that: It also comprises a supporting leg (5), wherein the supporting leg (5) is installed at the step of the stepped storage body (3).

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