Manufacturing equipment for dust purification and catalyst-loaded fiber filter tube

Abstract

The invention discloses manufacturing equipment for dust purification and catalyst-loaded fiber filter tubes, which comprises a suction pump, an outer cylinder mold, an inner cylinder mold and a modeling mold, waste liquid holes are distributed in the outer cylinder mold and are used for communicating with the suction pump, the inner cylinder mold is arranged in the outer cylinder mold, a molding cavity is defined by the outer cylinder mold and the inner cylinder mold, and the molding cavity is communicated with the suction pump. The inner cylinder mold comprises a slurry inlet, a slurry outlet, a flow channel and a liquid outlet hole, the flow channel is arranged in the inner cylinder mold in a U shape, one end of the flow channel is communicated with the liquid inlet, the other end of the flow channel is communicated with the liquid outlet hole, and the flow channel is communicated with the forming cavity through the liquid outlet hole. Therefore, through the design of primary pulp circulation backflow, on one hand, the flowing speed of the fiber primary pulp in the flow channel can be increased, the forming space can be rapidly filled with the fiber primary pulp, and the dynamic fiber pulp fluid enables the fiber primary pulp to be always kept in a higher and more uniform fiber concentration state; and the fibers can grow along the inner wall of the modeling mold more uniformly, the forming efficiency of the fiber tube blank is improved, and the production time is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of fiber filter tubes, in particular to fiber filter tube manufacturing equipment. Background Art

[0002] With the rapid growth of demand in my country's environmental protection industry and industrial filtration, high-performance fiber filter tubes are increasingly being used in dust purification, catalyst loading, wastewater treatment, and other fields. Common ceramic fiber forming equipment includes: dry pressing, which compacts ceramic powder under high pressure (70-100 MPa); centrifugal forming, which uses centrifugal force to evenly distribute fibers on the inner wall of a rotating mold; additive manufacturing, which uses 3D printing technology to create fibers; and wet forming equipment.

[0003] The traditional fiber filter tube molding process has problems such as uneven molding pressure distribution, difficulty in demolding, large product density gradient, and low yield rate; existing molds mostly adopt an integral structure, which can easily cause damage to the filter tube surface during demolding, affecting molding efficiency and product quality. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a manufacturing device for dust purification and catalyst-loaded fiber filter tubes.

[0005] According to an embodiment of the present invention, a manufacturing device for a fiber filter tube for dust purification and catalyst loading includes: Suction pump; An outer cylinder mold, wherein waste liquid holes are distributed on the outer cylinder mold, and the waste liquid holes are used to connect with the suction pump; An inner cylinder mold, wherein the inner cylinder mold is arranged in the outer cylinder mold, and the outer cylinder mold and the inner cylinder mold enclose a molding cavity, the inner cylinder mold includes a slurry inlet, a slurry outlet, a flow channel, and a liquid outlet hole, the flow channel is U-shaped and arranged in the inner cylinder mold, one end of the flow channel is connected to the liquid inlet, and the other end is connected to the liquid outlet, and the flow channel is connected to the molding cavity through the liquid outlet hole; The molding die is arranged between the outer cylinder die and the inner cylinder die, and the molding die is provided with filtrate holes distributed thereon.

[0006] According to some embodiments of the present invention, a first pump body is provided at the slurry inlet, and a second pump body is provided at the slurry outlet, wherein the pressure value of the second pump body when working is lower than the pressure value of the first pump body when working.

[0007] According to some embodiments of the present invention, the slurry outlet is arranged above the slurry inlet.

[0008] According to some embodiments of the present invention, each of the waste liquid holes is provided with a pressure control valve, and the pressure control valves are connected in parallel to each other and to the suction pump.

[0009] According to some embodiments of the present invention, the inner cylinder mold includes a first skirt, the molding mold includes a second skirt, and the outer cylinder mold includes a third skirt. The second skirt is arranged between the first skirt and the third skirt, and the first skirt, the second skirt and the third skirt are connected by a screw.

[0010] According to some embodiments of the present invention, the modeling mold includes a first mold and a second mold, and the first mold and the second mold are engaged with each other.

[0011] According to some embodiments of the present invention, the invention further comprises: a sealing ring, wherein the sealing ring is provided between the second skirt and the third skirt.

[0012] According to some embodiments of the present invention, a groove is provided on the first skirt, the second skirt is embedded in the groove, and the height of the groove is the same as the thickness of the second skirt.

[0013] Beneficial effects

[0014] The present invention adopts the design of circulating slurry backflow, which can, on the one hand, increase the flow speed of the fiber slurry in the flow channel so that it can quickly fill the molding space, and this dynamic fiber slurry flow allows the fiber slurry to always maintain a higher and more uniform fiber concentration state, which is conducive to more uniform fiber growth along the inner wall of the molding mold, improves the formation efficiency of the fiber tube embryo, and shortens the production time; on the other hand, it can also effectively "recycle" the unused fiber slurry in the inner tube mold, avoid local deposition of this part of the fiber, resulting in the inability of the fiber to efficiently and quickly adhere to the molding mold, affecting the molding quality of the fiber tube body, and also improve the fiber utilization rate; ultimately, higher uniformity of fiber tube molding quality can be achieved while also improving molding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which: Figure 1 is an overall schematic diagram of a fiber filter tube forming device according to an embodiment of the present invention; Figure 2 is a schematic cross-sectional view of a fiber filter tube forming device according to an embodiment of the present invention; Figure 3 According to an embodiment of the present invention Figure 2 A local enlarged schematic diagram of point A in FIG; Figure 43D is a schematic three-dimensional diagram of a molding die according to an embodiment of the present invention.

[0016] Reference numerals: 100. Fiber filter tube forming equipment; 1. Suction pump; 2. Outer tube mold; 21. Waste liquid hole; 22. Third skirt; 3. Inner tube mold; 31. Slurry inlet; 32. Slurry outlet; 33. Flow channel; 34. Liquid outlet; 35. First skirt; 351. Groove; 4. Molding mold; 41. Second skirt; 42. First mold; 43. Second mold; 51. First pump body; 52. Second pump body; 6. Pressure control valve; 7. Sealing ring. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the present disclosure, in conjunction with the drawings in the embodiments disclosed in this application. The description of the embodiments is actually only illustrative and exemplary and does not limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without carrying out creative work should fall within the scope of protection of the present disclosure. In addition, the technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the specification.

[0018] Combine Figures 1 to 4 As shown, a manufacturing device 100 for dust purification and catalyst-loaded fiber filter tubes according to an embodiment of the present invention includes: a suction pump 1, an outer cylinder mold 2, an inner cylinder mold 3 and a molding mold 4, wherein the outer cylinder mold 2 is provided with a waste liquid hole 21, and the waste liquid hole 21 is used to connect to the suction pump 1, the inner cylinder mold 3 is arranged in the outer cylinder mold 2, and the outer cylinder mold 2 and the inner cylinder mold 3 enclose a molding chamber, the inner cylinder mold 3 includes a slurry inlet 31, a slurry outlet 32, a flow channel 33 and a liquid outlet 34, the flow channel 33 is U-shaped and arranged in the inner cylinder mold 3, one end of the flow channel 33 is connected to the liquid inlet, and the other end is connected to the liquid outlet, the flow channel 33 is connected to the molding chamber through the liquid outlet 34, and at the same time, the molding mold 4 is arranged in the molding chamber, and filtrate holes are distributed on the molding mold 4.

[0019] Specifically, the fiber slurry enters the inner cylinder mold 3 through the slurry inlet 31 and flows along the flow channel 33, and then part of the fiber slurry flows out from the slurry outlet 32, thereby forming a circulating reflux flow path. At the same time, during the circulation reflux of the fiber slurry, a vacuum layer is formed on the outside of the molding mold 4 through the waste liquid hole 21 connected to the suction pump 1, so that part of the fiber slurry is pressed into the molding chamber through the liquid outlet hole 34 by utilizing the pressure difference between the flow channel 33 and the vacuum layer. Since there are tiny filtrate holes distributed on the molding mold 4, the fibers in the fiber slurry are intercepted and attached to the inner wall of the molding mold 4. The filtered liquid leaves the outer cylinder mold 2 through the waste liquid hole 21, and as the fibers continue to remain on the inner wall of the molding mold 4, the tube body of the fiber filter tube is grown until the filter tube is finally formed.

[0020] Since the existing molding equipment often uses a single-stage one-way filtration method with one pipe for pulp input and one pipe for liquid discharge, it is easy for the fiber slurry to stay in one place, and the fiber liquid will flow towards the waste liquid before it is completely absorbed. This not only takes a long time but also has low molding efficiency.

[0021] Therefore, the present invention can improve the flow velocity of the fiber slurry in the flow channel 33 through the design of slurry circulation reflux. The fiber slurry is always maintained at a higher and more uniform fiber concentration state by utilizing this dynamic fiber slurry fluid, which is conducive to the more uniform growth of fibers along the inner wall of the molding mold 4, improves the formation efficiency of the fiber tube embryo, and shortens the production time; on the other hand, it can also effectively "recycle" the unused fiber slurry in the inner tube mold 3, avoid local deposition of this part of the fiber, resulting in the inability of the fiber to efficiently and quickly attach to the molding mold 4, affecting the molding quality of the fiber tube body, and also improve the fiber utilization rate; ultimately, higher uniformity of the fiber tube molding quality can be achieved while also improving the molding efficiency.

[0022] Furthermore, based on the above embodiment, Figure 1 As shown, a first pump body 51 is provided at the slurry inlet 31, and a second pump body 52 is provided at the slurry outlet 32, wherein the pressure value of the second pump body 52 when working is lower than the pressure value of the first pump body 51 when working, wherein the reflux pressure can always be made 200Pa lower than the input pressure, which is conducive to promoting the formation of fiber slurry fluid and avoiding the influence of excessive suction at the slurry outlet 32 ​​on the growth of fibers on the molding mold 4.

[0023] Preferably, in some of the above embodiments, the slurry outlet 32 ​​can be arranged above the slurry inlet 31, that is, the slurry inlet 31 is arranged below the inner cylinder mold 3, and the slurry outlet 32 ​​is arranged above the inner cylinder mold 3. When in use, the fiber slurry enters from the slurry inlet 31 and flows upward along the U-shaped flow channel 33, and finally leaves the inner cylinder mold 3 from the slurry outlet 32, which is conducive to the fiber slurry filling the space above the molding mold 4.

[0024] In some embodiments of the present invention, Figure 2 As shown, pressure control valves 6 are provided at the waste liquid holes 21. The pressure control valves 6 are connected in parallel with each other and are connected to the suction pump 1. The suction pump 1 is used to suck all the waste liquid holes 21 as a whole, so that the pressure distribution in each area of ​​the molding mold 4 is uniform, and a vacuum layer with uniform pressure is formed near the molding mold 4; it avoids the situation where the pressure near the suction port is higher and the pressure away from the suction port is lower, resulting in uneven pressure distribution during fiber filter tube molding, affecting the final molding quality.

[0025] At the same time, when the pressure of a certain pressure control valve 6 is greater than or equal to the threshold, the valve body of the pressure control valve 6 is opened, so that the suction force of the suction pump 1 acts on the waste liquid hole 21, indicating that the fiber attachment at the molding mold 4 near the waste liquid hole 21 is small.

[0026] When the pressure of a pressure control valve 6 is less than or equal to a threshold, the valve body of the pressure control valve 6 is closed to prevent the suction force from acting on the mold 4. The threshold value can be 0.08 MPa. At this time, it means that there are many fibers attached to the mold 4 at the corresponding waste liquid hole 21, and the suction can be slowed or stopped.

[0027] In this way, the distribution of suction on the molding die 4 is adjusted by the controllable pressure control valve 6, so as to avoid the suction of the suction pump 1 continuously acting on the molding die 4 indiscriminately, affecting the molding of the filter tube, thereby also being conducive to improving the quality of the filter tube during molding.

[0028] In some embodiments of the invention, Figure 3 As shown, the inner cylinder mold 3 includes a first skirt 35, the molding mold 4 includes a second skirt 41, and the outer cylinder mold 2 includes a third skirt 22. The second skirt 41 is arranged between the first skirt 35 and the third skirt 22. The first skirt 35 is provided with bolt holes, the second skirt 41 is also distributed with bolt holes, and the third skirt 22 is distributed with bolt holes or threaded blind holes. In this way, the first skirt 35, the second skirt 41 and the third skirt 22 can be connected together by bolts to achieve fixation between the inner cylinder mold 3, the molding mold 4 and the outer cylinder mold 2.

[0029] Specifically, when the fiber filter tube grows and takes shape on the inner wall of the molding mold 4, the inner cylinder mold 3 and the outer cylinder mold 2 can be separated by removing the bolts. At this time, the first pump body 51 is used to suck air to press out the fiber slurry inside the inner cylinder mold 3. At the same time, the air pressed into the flow channel 33 can initially separate the inner cylinder mold 3 from the fiber tube embryo.

[0030] In some embodiments of the invention, Figure 4As shown, the molding mold 4 can adopt a split structure, wherein the molding mold 4 is cut along the axial direction so that the molding mold 4 is divided into two parts, the upper half of the molding mold 4 is the first mold 42, and the lower half is the second mold 43.

[0031] Since traditional molding equipment adopts an integral structure, the whole is a tubular mold with only one opening. Once the fibers are attached and molded in the mold, it is difficult to pull them out of the mold when demolding is required, which can easily cause damage to the surface of the filter tube.

[0032] Therefore, the split molding mold 4 structure adopted in the present invention is conducive to ensuring the strength of the filter tube while being able to remove the fiber tube embryo faster and safer, avoiding damage to the fiber tube body when removing it. This not only improves product quality, but also improves the production efficiency of the fiber filter tube molding process.

[0033] Furthermore, based on the above embodiment, Figure 3 and Figure 4 As shown, the fiber filter tube forming equipment 100 also includes a sealing ring 7, wherein the sealing ring 7 is arranged between the second skirt 41 and the third skirt 22, thereby improving the sealing performance at the second skirt 41 of the first mold 42 and the second mold 43, and avoiding affecting the negative pressure vacuum effect in the molding chamber.

[0034] Furthermore, based on the above embodiment, a groove 351 is provided on the first skirt 35, and the second skirt 41 is embedded in the groove 351, and the height of the groove 351 is the same as the thickness of the second skirt 41, which is beneficial to further enhance the sealing effect of the sealing ring 7 on the second skirt 41.

[0035] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0036] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A manufacturing device for dust purification and catalyst-loaded fiber filter tubes, characterized in that: include: Suction pump; An outer cylinder mold, wherein waste liquid holes are distributed on the outer cylinder mold, and the waste liquid holes are used to connect with the suction pump; An inner cylinder mold, wherein the inner cylinder mold is arranged in the outer cylinder mold, and the outer cylinder mold and the inner cylinder mold enclose a molding cavity, the inner cylinder mold includes a slurry inlet, a slurry outlet, a flow channel, and a liquid outlet hole, the flow channel is U-shaped and arranged in the inner cylinder mold, one end of the flow channel is connected to the liquid inlet, and the other end is connected to the liquid outlet, and the flow channel is connected to the molding cavity through the liquid outlet hole; The molding die is arranged between the outer cylinder die and the inner cylinder die, and the molding die is provided with filtrate holes distributed thereon.

2. The manufacturing equipment for dust purification and catalyst-loaded fiber filter tubes according to claim 1, characterized in that: A first pump body is provided at the slurry inlet, and a second pump body is provided at the slurry outlet, wherein the pressure value of the second pump body when working is lower than the pressure value of the first pump body when working.

3. The manufacturing equipment for dust purification and catalyst-loaded fiber filter tubes according to claim 1 or 2, characterized in that: The pulp outlet is arranged above the pulp inlet.

4. The manufacturing equipment for dust purification and catalyst-loaded fiber filter tubes according to claim 1, characterized in that: The waste liquid holes are each provided with a pressure control valve, and adjacent pressure control valves are connected in parallel to each other and are connected to the suction pump.

5. The manufacturing equipment for dust purification and catalyst-loaded fiber filter tubes according to claim 1, characterized in that: The inner cylinder mold includes a first skirt, the molding mold includes a second skirt, and the outer cylinder mold includes a third skirt. The second skirt is arranged between the first skirt and the third skirt, and the first skirt, the second skirt and the third skirt are connected by screws.

6. The manufacturing equipment for dust purification and catalyst-loaded fiber filter tubes according to claim 1 or 5, characterized in that: The molding mold includes a first mold and a second mold, and the first mold and the second mold are engaged with each other.

7. The manufacturing equipment for dust purification and catalyst-loaded fiber filter tubes according to claim 6, characterized in that: Also includes: A sealing ring is provided between the second skirt and the third skirt.

8. The manufacturing equipment for dust purification and catalyst-loaded fiber filter tubes according to claim 7, characterized in that: The first skirt is provided with a groove, the second skirt is embedded in the groove, and the height of the groove is the same as the thickness of the second skirt.

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