A shunt filtered tee

Abstract

A kind of shunt filtering tee joint, including: main body 1, gland 2, filtering device 3, the inlet of main body 1 is T-shaped structure with two outlets, gland 2 is connected with the inlet of main body 1 by thread and filtering device 3 is fixed in main body 1, filtering device 3 includes metal frame 4, fixed filter cartridge 5, movable filter cartridge 6, conical tip 7, stand 8 and spring 9.Filtering device 3 can filter solid impurities in fluid, reduce erosion corrosion, while the fluid can be shunted, slow down fluid speed, reduce impact force, prevent tee joint damage.And by using filter screen and specific filter layer material, it has excellent adsorption filtering effect, can effectively filter out macromolecular solid particles and small molecule impurities in fluid, with the advantages of high filtering efficiency, large adsorption capacity.

Description

Technical Field

[0001] The invention relates to the technical field of pipe joints, in particular to a three-way joint for diversion and filtration. Background Art

[0002] During pipeline transportation, when fluids containing solid particles flow to specific locations in the pipeline, such as elbows and tees, the fluid flow direction changes dramatically, causing changes in the pressure and velocity of the fluid-solid phase inside and outside the pipeline, especially near the inner and outer walls. Simultaneously, the solid particles, under inertia, impact the inner wall of the pipeline, causing erosion and wear over time. For tees, the intersection of the three pipes, facing the inlet, is subject to significant particle impact, causing erosion and wear on the joint wall.

[0003] In the prior art, in order to solve this problem, CN 215568808 U discloses a multi-caliber noise reduction tee joint, which diverts the fluid through a spherical arc structure. However, it does not solve the problem of solid particle impurities in the fluid, and there is still room for improvement.

[0004] When filtering fluids, achieving dual filtration of both macromolecular particles and small molecule impurities is an urgent problem. Chinese patent CN105999855A discloses a glue-free composite activated carbon filter material and its preparation method. This filter material requires no glue, has a simple structure, and is easy to prepare. However, this material has limited adsorption capacity and poor durability. Summary of the Invention

[0005] The purpose of the present invention is to provide a three-way joint with diversion and filtration, which can filter solid particle impurities in the fluid, change the flow direction of the fluid through the diversion structure to slow down the flow rate of the fluid, reduce the impact force on the pipe wall facing the inlet, and at the same time have a certain resistance to sudden pressure increases.

[0006] The present invention provides a three-way joint for diversion filtration, comprising: a main body 1, a pressure cover 2, and a filter device 3. The inlet of the main body 1 and the two outlets form a T-structure. The pressure cover 2 is connected to the inlet of the main body 1 through a thread and fixes the filter device 3 in the main body 1. The filter device 3 includes a metal frame 4, a fixed filter cartridge 5, a movable filter cartridge 6, a conical tip 7, a column 8 and a spring 9.

[0007] Preferably, the metal frame 4 is fixed in the main body 1 by the gland 2, a column 8 is installed at the bottom center of the metal frame 4, and a spring 9 is connected to the outer surface of the column 8; the conical surface of the conical tip 7 is curved, and one flat end of the conical tip 7 is mounted on the movable filter cartridge 6, and a guide groove is formed on one flat end of the conical tip 7, and the column 8 is in the guide groove; the fixed filter cartridge 5 is mounted on the metal frame 4, and the movable filter cartridge 6 is movably connected to the fixed filter cartridge 5 inside the fixed filter cartridge 5. The conical tip 7 on the movable filter cartridge 6 can divert the gas at the inlet. The fluid impact force in the center of the pipeline is the greatest, but the conical tip 7 can change the direction of fluid movement, and the curvature of the conical surface of the conical tip 7 can reduce the fluid impact force.

[0008] Preferably, the movable filter cartridge 6 is cylindrical and constructed from a double-layer metal frame with a filter screen mounted on it. The inner interlayer of the double-layer metal frame contains a filter layer. The double-layer metal frame provides strong support for the filter cartridge, preventing the movable filter cartridge 6 from breaking. The filter screen filters larger solid particles, while the filter layer filters smaller impurities.

[0009] In order to further improve the adsorption capacity and adsorption efficiency of the filter layer, preferably, the filter layer is an activated carbon filter layer.

[0010] Further preferably, the raw materials of the activated carbon filter layer include, by weight, 70-90 parts of activated carbon, 10-15 parts of polyvinyl alcohol, 3-6 parts of yttrium oxide, and 15-25 parts of palm fiber.

[0011] More preferably, the particle size of the activated carbon is 30 to 60 meshes.

[0012] Preferably, the activated carbon is acid-modified activated carbon.

[0013] More preferably, the acid is a mixture of one or more of sulfuric acid, nitric acid and phosphoric acid.

[0014] More preferably, the acid is phosphoric acid with a concentration of 5-7 mol / L.

[0015] Since the micropore content of activated carbon is very sufficient and the pore size is very narrow, and since its surface has abundant micropores, it has the advantages of large adsorption capacity and fast adsorption rate. The inventors have found that, in particular, the use of acid-modified activated carbon materials has a significantly improved adsorption effect on small molecule impurity components in the fluid. The inventors analyzed that this may be due to the complex components in the fluid. After modification, the content of acidic groups on the surface of activated carbon can be significantly increased, the content of basic groups can be reduced, and the water absorption of the surface of activated carbon can be increased. The acidic groups have strong polarity and have a better adsorption effect on polar components in the fluid. The inventors also unexpectedly found that when using acid-modified activated carbon, it can be better evenly dispersed with components such as palm fiber in the system, thereby enhancing the toughness and adsorption efficiency of the material.

[0016] However, the inventors found that if the acid content used is too high, it will affect the service life and adsorption effect of the material. This may be because palm fiber has a certain hygroscopicity. If the activated carbon has too strong water absorption, it may cause the material to absorb too much moisture in the air, which will affect the use of the material and its adsorption efficiency and adsorption capacity.

[0017] Preferably, the preparation steps of the acid-modified activated carbon are as follows:

[0018] 100 ml of phosphoric acid was added to a reactor containing 120 g of activated carbon, mixed evenly, rinsed with water until the impregnation liquid was neutral, and the washed activated carbon was placed in an oven at 60-80° C. and dried for 5-8 hours to obtain the acid-modified activated carbon.

[0019] Preferably, the polyvinyl alcohol has a polymerization degree of 150 to 500 and an alcoholysis degree of 88% to 99%.

[0020] Further preferably, the preparation steps of the filter layer are as follows: adding activated carbon, yttrium oxide, palm fiber, and polyvinyl alcohol into a reactor filled with ethanol in sequence, stirring evenly, and drying to obtain the filter layer material.

[0021] Preferably, the fixed filter cartridge 5 is cylindrical at one end and conical at the other, and is constructed from a double-layer metal frame with a filter screen mounted on it. The inner interlayer of the double-layer metal frame contains a filter layer. The double-layer metal frame provides strong support for the filter cartridge, preventing the movable filter cartridge 6 from breaking. The filter screen filters larger solid particles, while the filter layer filters smaller impurities.

[0022] Preferably, a slider is installed on the outside of the movable filter cartridge 6, and a chute is provided on the inside of the fixed filter cartridge 5. The slider on the movable filter cartridge 6 fits within the chute of the fixed filter cartridge 5. This slider and chute structure allows the movable filter cartridge 6 to slide within the fixed filter cartridge 5. When fluid pressure suddenly increases, the movable filter cartridge 6 resists the pressure caused by the fluid by compressing the spring 9, reducing vibration. Simultaneously, the filtration area of ​​the movable filter cartridge 6 decreases, slowing the filtration rate of the fluid and reducing the impact force of the fluid on the pipe body directly opposite the inlet of the tee joint.

[0023] Preferably, a diverter block 10 is integrally formed with the main body 1 on the wall of the tube facing the inlet. The diverter block 10 has a conical cross-section. After fluid enters the inlet, the conical diverter block 10 redirects it toward the outlet. Furthermore, the diverter block 10 is integrally formed with the main body 1, providing support and effectively enhancing resistance to fluid flow.

[0024] Preferably, there are two diverter blocks 10 , which are symmetrical with respect to the plane formed by the inlet centerline and the outlet centerline of the main body 1 .

[0025] Preferably, the tube wall of the main body 1 facing the inlet has a reinforcing rib 11 integrally formed with the main body 1, and the reinforcing rib 11 is in the plane formed by the centerline of the inlet and the centerline of the outlet of the main body 1. The reinforcing rib 11 is integrally formed with the main body 1, providing support for the main body 1 and effectively enhancing resistance to fluid.

[0026] Beneficial effects:

[0027] (1) The present invention provides a three-way joint for diversion and filtration, which can filter and divert the fluid in the pipeline, reduce the impact force of the fluid on the pipeline, and at the same time enhance the resistance of the three-way joint to the fluid.

[0028] (2) The filter device 3 can adjust the filtering speed according to the fluid pressure. When the fluid pressure is low, the spring 9 will pop out the movable filter cartridge 6, the filtering area will increase, the filtering speed will be fast, and the fluid speed will be guaranteed; when the fluid pressure is high, the fluid will compress the spring 9 under the movable filter cartridge 6, the filtering area will decrease, the filtering speed will be slow, the fluid speed will be slowed down, and the impact force will be reduced.

[0029] (3) The main body 1 of the fixed filter cartridge 5 and the movable filter cartridge 6 is a metal frame, which is strong and durable. The filter mesh can filter larger solid particles, and the filter layer can filter smaller impurities, reducing the erosion and wear of the fluid on the pipeline.

[0030] (4) The conical tip 7 can divert the fluid with the greatest impact force, change its movement direction, slow down its movement speed, and thus reduce its impact force.

[0031] (5) The diverter block 10 can divert the fluid and change its direction of movement, thereby reducing the impact force.

[0032] (6) The diverter block 10 and the reinforcing rib 11 are integrally formed with the main body 1 to enhance the strength of the main body 1.

[0033] (7) By using filter mesh and specific filter layer materials, it has the advantages of high filtration efficiency, large adsorption capacity and durability. The treated compressed air can effectively reduce the dust and oil content of the gas, meeting the requirements of most industrial uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 these drawings without paying any creative work.

[0035] Figure 1 This is a structural schematic diagram of an embodiment of a three-way joint for diversion filtration provided by the present invention.

[0036] Figure 2 A front cross-sectional view of an embodiment of a diversion and filtration three-way joint provided by the present invention.

[0037] Figure 3 A top cross-sectional view of an embodiment of a three-way joint for diversion and filtration provided by the present invention.

[0038] Figure 4 A schematic diagram of a filtering device 3 of an embodiment of a three-way joint for diversion filtration provided by the present invention.

[0039] Figure 5 A gas flow diagram of an embodiment of a three-way joint for split flow filtration provided by the present invention.

[0040] In the figure: 1-main body, 2-pressure cover, 3-filter device, 4-metal frame, 5-fixed filter cartridge, 6-movable filter cartridge, 7-conical tip, 8-column, 9-spring, 10-diverter block, 11-reinforcement rib. DETAILED DESCRIPTION

[0041] The present invention may be more readily understood by referring to the following detailed description of preferred embodiments of the present invention and the included Examples. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs. In the event of a conflict, the definitions in this specification shall prevail.

[0042] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "connection" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0043] Example 1:

[0044] like Figure 1-4 The illustrated three-way joint for diversion filtration comprises: a main body 1, a gland 2, and a filter device 3. The inlet of the main body 1 and the two outlets form a T-shaped structure. The gland 2 is connected to the inlet of the main body 1 through threads and fixes the filter device 3 in the main body 1. The filter device 3 comprises a metal frame 4, a fixed filter cartridge 5, a movable filter cartridge 6, a conical tip 7, a column 8, and a spring 9.

[0045] Metal frame 4 is secured within main body 1 by gland 2. A column 8 is mounted at the bottom center of metal frame 4, with a spring 9 mounted on its outer surface. Conical tip 7 has a curved conical surface, and one flat end of the conical tip 7 is mounted on movable filter cartridge 6. A guide groove is defined on the flat end of the conical tip 7, with column 8 positioned within the groove. Fixed filter cartridge 5 is mounted on metal frame 4, with movable filter cartridge 6 movably connected to it within the fixed filter cartridge 5. The conical tip 7 on movable filter cartridge 6 diverts the inlet gas flow. While the fluid impact force at the center of the pipe is the greatest, conical tip 7 can redirect the fluid's movement, and the curvature of the conical surface mitigates the fluid's impact.

[0046] The movable filter cartridge 6 is cylindrical and constructed from a double-layer metal frame with a filter screen mounted on top. Within the double-layer metal frame lies a filter layer. This double-layer metal frame provides strong support for the filter cartridge, preventing it from breaking. The filter screen filters larger solid particles, while the filter layer filters smaller impurities.

[0047] The fixed filter cartridge 5 is cylindrical at one end and conical at the other. It consists of a double-layer metal frame with a filter screen mounted on it. Within the inner layer of the double-layer metal frame is a filter layer. This double-layer metal frame provides strong support for the filter cartridge, preventing the movable filter cartridge 6 from breaking. The filter screen filters larger solid particles, while the filter layer filters smaller impurities.

[0048] A slider is mounted on the outside of the movable filter cartridge 6, while a chute is defined on the inside of the fixed filter cartridge 5. The slider on the movable filter cartridge 6 fits within the chute of the fixed filter cartridge 5. This slider and chute structure allows the movable filter cartridge 6 to slide within the fixed filter cartridge 5. When fluid pressure suddenly increases, the movable filter cartridge 6 resists the pressure by compressing the spring 9, reducing vibration. Simultaneously, the filtration area of ​​the movable filter cartridge 6 decreases, slowing the filtration rate and reducing the impact of the fluid on the pipe body directly opposite the inlet of the tee joint.

[0049] Two integrally formed diverter blocks 10 are located on the tube wall of the main body 1, facing the inlet. These diverter blocks 10 have a tapered cross-section and are symmetrical about the plane formed by the inlet and outlet centerlines of the main body 1. After entering the inlet, the conical diverter blocks 10 redirect the fluid toward the outlet. Furthermore, the diverter blocks 10, integrally formed with the main body 1, provide support and effectively enhance resistance to fluid flow.

[0050] On the wall of the pipe facing the inlet, there is a reinforcing rib 11 integrally formed with the main body 1. The reinforcing rib 11 is in the plane formed by the centerline of the inlet and the centerline of the outlet of the main body 1. The reinforcing rib 11 is integrally formed with the main body 1, providing support for the main body 1 and effectively enhancing resistance to fluid.

[0051] like Figure 5 As shown, the fluid enters the pipe in a straight line, passes through the conical tip 7, and is dispersed toward the pipe wall. Some of the fluid passes through the fixed filter cartridge 5, while some is squeezed and redirected again to pass through the movable filter cartridge 6, reducing the fluid's impact force. At the same time, larger particles in the fluid are filtered out by the filter screen, while smaller impurities are absorbed by the filter layer. By reducing impurities, erosion and corrosion are mitigated. After passing through the filter device 3, the fluid is diverted by the diverter block 10 and redirected toward the outlet, reducing the impact force. At the same time, the diverter block 10 and the reinforcing ribs 11 provide a certain resistance to impact force.

[0052] The filter layer used in the movable filter cartridge 6 and the fixed filter cartridge 5 is an activated carbon filter layer. The raw materials of the activated carbon filter layer include, by weight, 80 parts of activated carbon, 12 parts of polyvinyl alcohol, 5 parts of yttrium oxide, and 20 parts of palm fiber.

[0053] The particle size of the activated carbon was 30-60 mesh coconut shell activated carbon, purchased from Henan Zhongju Purification Material Co., Ltd. The activated carbon was acid-modified activated carbon modified with phosphoric acid at a concentration of 6 mol / L.

[0054] The preparation steps of acid-modified activated carbon are as follows: 100 ml of phosphoric acid is added to a reactor containing 120 g of activated carbon, shaken in a water bath for 5 hours, mixed evenly, taken out and allowed to stand for 30 minutes, rinsed with water until the immersion liquid is neutral, and the washed activated carbon is placed in an oven at 80°C and dried for 5 hours to obtain the acid-modified activated carbon.

[0055] Polyvinyl alcohol (PVA) was PVA-0388, purchased from Shanghai Chenqi Chemical Technology Co., Ltd.

[0056] The preparation steps of the filter layer are as follows: adding activated carbon, yttrium oxide, palm fiber and polyvinyl alcohol into a reactor filled with 80 parts of ethanol in sequence, stirring evenly and drying to obtain the filter layer material.

[0057] Comparative Example 1

[0058] This embodiment provides a three-way joint for diversion filtration. The specific implementation method is the same as that of Example 1. The difference from Example 1 is that the activated carbon in the filtration layer is activated carbon that has not been acid-modified.

[0059] Comparative Example 2

[0060] This embodiment provides a three-way joint for diversion filtration. The specific implementation method is the same as that of Example 1. The difference from Example 1 is that the amount of acid added to the acid-modified activated carbon is 300 ml.

[0061] Comparative Example 3

[0062] This embodiment provides a three-way joint for diversion filtration. The specific implementation method is the same as that of Example 1. The difference from Example 1 is that the raw material of the filter layer contains 5 parts of palm fiber.

[0063] Performance Testing

[0064] 1. Specific surface area: Use BET specific surface area tester to test the specific surface area of ​​the filter layer material.

[0065] 2. Filtration Effect Test: Connect the T-joint to the ventilation pipe, pass the compressed gas in the gas tank through the T-joint for filtration, and collect the treated gas. Test the dust particle size and oil content of the compressed gas before and after treatment. The test methods used are standard in the industry.

[0066] Determine the dust content level and oil content level according to the provisions of ISO 8573-1 "Compressed Air" on dust content level (see Table 1) and oil content level (see Table 2).

[0067] Table 1 Dust content level

[0068] grade <![CDATA[固体含量 / mg / m 3 ]]> 1 0.1 (corresponding to particle size of 0.1 μm) 2 1.0 (corresponding to particle size 1.0 μm) 3 5.0 (corresponding to particle size 5.0 μm) 4 40.0 (corresponding to a particle size of 40.0 μm)

[0069] Table 2 Oil content grades

[0070]

[0071] The specific surface area of ​​the filter layer materials of Example 1 and Comparative Examples 1-3 was tested, and the filtration effect of the diversion filtration three-way joints of Example 1 and Comparative Examples 1-3 was tested. The test results are shown in Table 3 below.

[0072] Table 3

[0073]

[0074] The foregoing examples are merely illustrative and serve to illustrate some of the features of the method of the present invention. The appended claims are intended to claim the widest possible scope that can be envisioned, and the embodiments presented herein are merely illustrative of selected implementations according to a combination of all possible embodiments. Therefore, it is the applicant's intention that the appended claims are not limited by the selection of examples illustrating the features of the present invention. Some numerical ranges used in the claims also include subranges therein, and variations in these ranges should also be interpreted as being covered by the appended claims where possible.

Claims

1. A three-way joint for diversion filtration, characterized in that: include: A main body (1), a gland (2), and a filter device (3), wherein the inlet of the main body (1) and the two outlets form a T-shaped structure, the gland (2) is connected to the inlet of the main body (1) via a thread and fixes the filter device (3) in the main body (1), and the filter device (3) comprises a metal frame (4), a fixed filter cartridge (5), a movable filter cartridge (6), a conical tip (7), a column (8), and a spring (9); The metal frame (4) is fixed in the main body (1) by the pressure cover (2), a column (8) is installed at the bottom center of the metal frame (4), and a spring (9) is connected to the outer shell of the column (8); the conical surface of the conical tip (7) has an arc, and one end of the plane of the conical tip (7) is installed on the movable filter cartridge (6), and a guide groove is opened on one end of the plane of the conical tip (7), and the column (8) is in the guide groove; the fixed filter cartridge (5) is installed on the metal frame (4), and the movable filter cartridge (6) is movably connected to the fixed filter cartridge (5) in the fixed filter cartridge (5); The movable filter cartridge (6) is provided with a slider on the outside, the fixed filter cartridge (5) is provided with a slide groove on the inside, and the slider on the movable filter cartridge (6) is in the slide groove of the fixed filter cartridge (5).

2. A three-way joint for diversion filtration according to claim 1, characterized in that: The movable filter cartridge (6) is cylindrical and is composed of a double-layer metal frame, a filter screen is installed on the double-layer metal frame, and a filter layer is arranged in the inner interlayer of the double-layer metal frame.

3. A three-way joint for diversion filtration according to claim 1, characterized in that: The fixed filter cartridge (5) has a cylindrical shape at one end and a conical shape at the other end, and is composed of a double-layer metal frame, a filter screen is mounted on the double-layer metal frame, and a filter layer is provided in the inner interlayer of the double-layer metal frame.

4. A three-way joint for diversion filtration according to claim 1, characterized in that: A diverter block (10) is provided on the pipe wall of the main body (1) facing the inlet and is integrally formed with the main body (1). The cross section of the diverter block (10) is conical.

5. A three-way joint for diversion filtration according to claim 4, characterized in that: There are two diverter blocks (10), which are symmetrical relative to the plane formed by the inlet centerline and the outlet centerline of the main body (1).

6. A three-way joint for diversion filtration according to claim 1, characterized in that: A reinforcing rib (11) formed integrally with the main body (1) is provided on the tube wall of the main body (1) facing the inlet, and the reinforcing rib (11) is within a plane formed by the inlet centerline and the outlet centerline of the main body (1).

7. A three-way joint for diversion filtration according to claim 2 or 3, characterized in that: The filter layer is an activated carbon filter layer. The raw materials of the activated carbon filter layer include, by weight, 70-90 parts of activated carbon, 10-15 parts of polyvinyl alcohol, 3-6 parts of yttrium oxide, and 3-5 parts of palm fiber.

8. A three-way joint for diversion filtration according to claim 7, characterized in that: The activated carbon is acid-modified activated carbon, and the acid is a mixture of one or more of sulfuric acid, nitric acid, and phosphoric acid.

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