Novel polyester melt spinning assembly

Abstract

The utility model discloses a novel polyester melt spinning assembly which comprises an assembly shell provided with an installation cavity in a limited mode, a sand cup arranged in the installation cavity, an upper cover arranged at the upper end of the sand cup in a sealed mode and a spinneret plate arranged at the bottom end of the sand cup in a sealed mode and provided with spinneret orifices. A first filtering sand block and a second filtering sand block are sequentially arranged in the inner cavity from top to bottom, a flow guide face is arranged at the upper end of the first filtering sand block, a plurality of distribution holes penetrating through the sand cup in the axial direction are formed in the bottom of the sand cup, and at least one feeding hole penetrating through the upper cover in the axial direction is formed in the upper cover. The feeding hole is correspondingly communicated with the inner cavity, at least one positioning column is inserted into the upper cover, the spinneret hole is correspondingly communicated with the distribution hole, and the spinneret plate is arranged at the bottom of the mounting cavity. The spinning assembly can guide the melt to flow without additionally pressurizing gravel to distribute the melt, materials are saved, and the sealing performance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning production, in particular to a novel polyester melt spinning component. Background Art

[0002] Polyester filament FDY belongs to melt spinning. After polymerization, the spinning fluid is transported to the spinning box through a pipeline, and then metered by a metering pump into the spinning assembly. The melt spinning assembly is a kind of machine that can filter, distribute, and then spit the melt from the spinneret to form a tow with various numbers of holes and cross-sectional shapes, and then cool and bundle spin. The basic structure of the current spinning assembly is composed of an upper cover, a threaded cover, a shell, a sand cup, a sandstone, metal sand, a sealing ring, a metal filter, a sealing gasket and a spinneret, and the sealing is performed by pressure extrusion and deformation of the aluminum sealing gasket.

[0003] The defects of the existing melt assembly are: the assembly structure is complex and numerous, the melt is mixed by filtering the dispersed metal sand fragments in the assembly, and a pressure sandstone, also called a distribution plate, is needed on the metal sand to distribute the melt and fix the scattered metal sand particles, and a layer of metal fine mesh is also covered on the metal sand to protect the stability of the sand layer and prevent sand from running away. The metal sand is disposable, and the disadvantages are: 1. The newly purchased metal sand needs to be cleaned, dried, and impurities removed, and then weighed, filled, and leveled, which is time-consuming and labor-intensive; 2. The metal sand is disposable and cannot be reused, resulting in great waste; 3. If two metal sands of different mesh sizes are to be placed in a sand cup at the same time, the operation process is complicated and cumbersome, and two weighings and filling and leveling sands are required, and the sands may merge. Therefore, a new technical solution is urgently needed to solve at least one of the above technical problems. Summary of the invention

[0004] In view of the above-mentioned deficiencies, the purpose of the utility model is to provide a novel polyester melt spinning component, in which the filter sand block has a guide surface that can guide the melt flow, does not require additional pressurized sand and gravel to distribute the melt, saves materials, saves installation time, and has good sealing performance.

[0005] In order to achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by the utility model is:

[0006] A novel polyester melt spinning assembly, characterized in that it comprises:

[0007] a component housing defining a mounting cavity;

[0008] A sand cup is arranged in the installation cavity, wherein at least one inner cavity is defined in the sand cup, a first filter sand block and a second filter sand block are arranged in the inner cavity from top to bottom in sequence, a guide surface is arranged at the upper end of the first filter sand block, and a plurality of distribution holes are arranged at the bottom of the sand cup to penetrate the sand cup in the axial direction;

[0009] An upper cover is sealed on the upper end of the sand cup, the upper cover is provided with at least one feed hole penetrating the upper cover along the axial direction, the feed hole is correspondingly connected with the inner cavity, and the upper cover is inserted with at least one positioning column;

[0010] A spinneret with spinneret holes is sealed and arranged at the bottom end of the sand cup, the spinneret holes are correspondingly communicated with the distribution holes, and the spinneret is arranged at the bottom of the installation cavity.

[0011] As a preferred technical solution, the number of the inner cavities is 2, and the two inner cavities are symmetrically spaced apart; the number of the feed holes is 2, and the two feed holes are symmetrically spaced apart; and each feed hole is connected to one inner cavity.

[0012] As a preferred technical solution, a sealing groove is provided on the inner wall of the upper portion of the sand cup, and a sealing ring is provided in the sealing groove.

[0013] As a preferred technical solution, a metal filter is provided at the bottom of the inner cavity, and the metal filter is located above the distribution hole.

[0014] As a preferred technical solution, a locking ring is detachably provided on the upper portion of the component housing, an annular positioning groove is provided on the lower side of the locking ring, and the positioning column extends into the positioning groove.

[0015] As a preferred technical solution, a sealing gasket is provided between the sand cup and the spinneret.

[0016] As a preferred technical solution, the outer side of the locking ring is provided with an external thread, and the upper inner wall of the component housing is provided with an internal thread matching the external thread.

[0017] As a preferred technical solution, the number of the positioning posts is two, the two positioning posts are symmetrically arranged, a positioning sleeve is arranged between the two inner cavities, and the bottom end of the positioning post is inserted into the positioning sleeve.

[0018] As a preferred technical solution, the guide surface is sloped.

[0019] As a preferred technical solution, the filter sand block is a sintered metal sand block.

[0020] Compared with the traditional technical solution, the beneficial effects of the utility model are:

[0021] 1) The first filter sand block has a guide surface that can guide the melt to flow. There is no need to add additional pressurized sand to distribute the melt, which saves materials, saves installation time, and has good sealing performance;

[0022] 2) Two inner cavities can improve melt spinning efficiency;

[0023] 3) The metal filter can further filter the melt and remove impurities in the melt;

[0024] 4) The locking ring presses the upper cover to prevent it from loosening and plays a protective role. The locking ring and the component housing are connected by threads for easy installation and disassembly;

[0025] 5) The positioning column and the positioning sleeve cooperate to position the upper cover, and the positioning column and the locking ring cooperate to position, and the positioning effect is good;

[0026] 6) Sintering metal sand blocks can reduce the steps of cleaning and drying, saving a lot of manpower and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A structural diagram of a spinning assembly provided for one embodiment of the utility model;

[0028] Figure 2 A partial structural diagram of a spinning assembly provided in one embodiment of the utility model;

[0029] Figure 3 for Figure 2 Top view of the .

[0030] exist Figure 1-Figure 3 1. Component housing; 101. Installation cavity; 102. Internal thread; 103. Retaining edge; 2. Sand cup; 201. Inner cavity; 202. Distribution hole; 203. Sealing groove; 3. Upper cover; 301. Feed hole; 302. Positioning column; 4. Spinneret; 5. First filter sand block; 501. Guide surface; 6. Second filter sand block; 7. Sealing ring; 8. Metal filter screen; 9. Locking ring; 901. External thread; 10. Sealing pad; 11. Positioning sleeve. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "top", "bottom", "left", "right", "front", "back", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] Please refer to Figure 1-Figure 3A novel polyester melt spinning component provided by an embodiment of the utility model comprises a component shell 1 defining an installation cavity 101, a sand cup 2 arranged in the installation cavity 101, an upper cover 3 sealed at the upper end of the sand cup 2, and a spinneret 4 with spinneret holes sealed at the bottom end of the sand cup 2, wherein at least one inner cavity 201 is defined in the sand cup 2, a first filter sand block 5 and a second filter sand block 6 are arranged in sequence from top to bottom in the inner cavity 201, a guide surface 501 is arranged at the upper end of the first filter sand block 5, a plurality of distribution holes 202 penetrating the sand cup 2 along the axial direction are arranged at the bottom of the sand cup 2, the upper cover 3 is provided with at least one feed hole 301 penetrating the sand cup 2 along the axial direction, the feed hole 301 is correspondingly connected to the inner cavity 201, at least one positioning column 302 is inserted in the upper cover 3, the spinneret holes are correspondingly connected to the distribution holes 202, and the spinneret 4 is arranged at the bottom of the installation cavity 101.

[0034] The melt enters the first filter sand block 5 in the inner cavity 201 from the feed hole 301. The first filter sand block 5 has a guide surface 501, which can guide the flow of the melt. No additional pressurized sand is required to distribute the melt, which saves materials, saves installation time, and has good sealing performance.

[0035] like Figure 1-Figure 3 As shown, the number of the inner cavities 201 is 2, and the two inner cavities 201 are symmetrically arranged. The number of the feed holes 301 is 2, and the two feed holes 301 are symmetrically arranged. Each feed hole 301 is connected to one inner cavity 201, and the two inner cavities 201 can improve the melt spinning efficiency.

[0036] like Figure 1-Figure 3 As shown, a sealing groove 203 is provided on the upper inner wall of the sand cup 2, and a sealing ring 7 is provided in the sealing groove 203. The sealing ring 7 is made of aluminum, and sealing is performed by pressure extrusion to extend and deform the aluminum sealing ring 7, so the sealing effect is good.

[0037] like Figure 1-Figure 3 As shown, a metal filter screen 8 is disposed at the bottom of the inner cavity 201 , and the metal filter screen 8 is located above the distribution hole 202 .

[0038] like Figure 1-Figure 3 As shown, a locking ring 9 is detachably provided on the upper part of the component shell 1, and an annular positioning groove is provided on the lower side of the locking ring 9. The positioning column 302 extends into the positioning groove, and the positioning column 302 cooperates with the positioning sleeve 11 to position the upper cover 3. The positioning column 302 cooperates with the locking ring 9 for positioning, and the positioning effect is good. The locking ring 9 is provided with a through hole corresponding to the feed hole 301, which is convenient for the melt to enter the feed hole 301.

[0039] like Figure 1-Figure 3As shown, a sealing gasket 10 is provided between the sand cup 2 and the spinneret 4 to improve the sealing performance.

[0040] like Figure 1-Figure 3 As shown, the outer side of the locking ring 9 is provided with an external thread 901, and the upper inner wall of the component housing 1 is provided with an internal thread 102 matching the external thread 901, which is easy to install and disassemble.

[0041] like Figure 1-Figure 3 As shown, a retaining edge 103 is provided at the lower end of the component housing 1 for blocking the spinneret 4.

[0042] like Figure 1-Figure 3 As shown, the number of the positioning columns 302 is two, and the two positioning columns 302 are symmetrically arranged. A positioning sleeve 11 is arranged between the two inner cavities 201, and the bottom end of the positioning column 302 is inserted into the positioning sleeve 11. The positioning column 302 cooperates with the positioning sleeve 11 to position the upper cover 3, and the positioning column 302 cooperates with the locking ring 9 to position, and the positioning effect is good.

[0043] like Figure 1-Figure 3 As shown, the guide surface 501 is in a slope shape. Specifically, the center of the guide surface 501 is inclined toward the surroundings to form a slope, which has a good guide effect.

[0044] like Figure 1-Figure 3 As shown, the filter sand block is a sintered metal sand block, which saves the steps of cleaning new sand, drying new sand, weighing, and leveling sand in the assembly process, saves a lot of manpower and time, and saves sand pressing stones and fine metal mesh consumables.

[0045] Powders such as iron, nickel, tungsten and alumina are used. By adding sintering materials such as nickel and alumina to iron, an object having a shape that conforms to the current state of the inner cavity 201 can be manufactured. The metal powder is filled into a mold for compression molding. It is compressed with high pressure from the vertical direction to increase the density and strength. The sintered product has strong mechanical properties by heating. It is baked in a sintering furnace at a temperature lower than the melting temperature of the metal, the temperature is 800 to 1300°C, and the sintering furnace is filled with protective gas to prevent oxidation of the molded product. The powder particles in the sintered molded product are fused and combined to become a sintered metal sand block with multiple channels and a specific shape. The sintered metal sand block has an internal porous and loose structure, and the second filter sand block 6 is an irregular columnar body.

[0046] Sintered metal sand blocks can be calcined in a vacuum furnace to maintain a hard appearance. Sintered metal sand blocks can be reused to replace disposable metal sand, which will not cause recycling difficulties and environmental pollution after one-time use.

[0047] The assembly process of the spinning assembly of the utility model is as follows: first install the sand cup 2, first put a metal filter screen 8 at the bottom of the sand cup 2, then press the sealing gasket 10, squeeze the first filter sand block 5 and the second filter sand block 6 into the sand cup 2 through a hydraulic press, put a sealing ring 7 around the first filter sand block 5, squeeze and seal the upper cover 3 and the sand cup 2, put the spinneret 4 into the assembly housing 1, and then put the sealing ring 7, put the sealed sand cup 2 and the upper cover 3 into the housing as a whole, manually screw the locking ring 9 into the upper part of the assembly housing 1, lock the sand cup 2, the upper cover 3, and the spinneret 4 as a whole, and complete the assembly of the melt spinning assembly.

[0048] Any numerical value cited herein includes all values ​​of lower and upper values ​​that increase by one unit from the lower limit to the upper limit, and there is at least a two-unit interval between any lower value and any higher value. For example, if the value of the quantity of a component or a process variable (such as temperature, pressure, time, etc.) is stated to be from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in the specification. For values ​​less than 1, one unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1. These are merely examples that are intended to be clearly expressed, and it can be considered that all possible combinations of numerical values ​​listed between the lowest value and the highest value are clearly stated in the specification in a similar manner.

[0049] Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. "About" or "approximately" used with a range applies to both endpoints of the range. Thus, "about 20 to 30" is intended to cover "about 20 to about 30", including at least the specified endpoints.

[0050] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for all purposes. The term "consisting essentially of..." to describe a combination should include the identified elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe a combination of elements, ingredients, parts or steps herein also contemplates embodiments that consist essentially of these elements, ingredients, parts or steps. By using the term "may", it is intended to indicate that any attribute described that "may" include is optional.

[0051] Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "an" used to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

[0052] It should be understood that the above description is for illustration and not for limitation. By reading the above description, many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art. Therefore, the scope of the present teachings should not be determined with reference to the above description, but should be determined with reference to the appended claims and the full scope of equivalents possessed by these claims. For the purpose of comprehensiveness, all articles and references, including the disclosures of patent applications and announcements, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to abandon the subject matter, nor should it be considered that the inventor has not considered the subject matter as part of the disclosed utility model subject matter.

Claims

1. A novel polyester melt spinning assembly, characterized in that: include: a component housing defining a mounting cavity; A sand cup is arranged in the installation cavity, wherein at least one inner cavity is defined in the sand cup, a first filter sand block and a second filter sand block are arranged in the inner cavity from top to bottom in sequence, a guide surface is arranged at the upper end of the first filter sand block, and a plurality of distribution holes are arranged at the bottom of the sand cup to penetrate the sand cup in the axial direction; An upper cover is sealed on the upper end of the sand cup, the upper cover is provided with at least one feed hole penetrating the upper cover along the axial direction, the feed hole is correspondingly connected with the inner cavity, and the upper cover is inserted with at least one positioning column; A spinneret with spinneret holes is sealed and arranged at the bottom end of the sand cup, the spinneret holes are correspondingly communicated with the distribution holes, and the spinneret is arranged at the bottom of the installation cavity.

2. The novel polyester melt spinning assembly according to claim 1, characterized in that: The number of the inner cavities is 2, and the two inner cavities are symmetrically spaced. The number of the feed holes is 2, and the two feed holes are symmetrically spaced. Each feed hole is connected to one of the inner cavities.

3. The novel polyester melt spinning assembly according to claim 1, characterized in that: The upper inner wall of the sand cup is provided with a sealing groove, and a sealing ring is provided in the sealing groove.

4. The novel polyester melt spinning assembly according to claim 1, characterized in that: A metal filter screen is arranged at the bottom of the inner cavity, and the metal filter screen is located above the distribution hole.

5. The novel polyester melt spinning assembly according to claim 1, characterized in that: A locking ring is detachably provided on the upper part of the component housing, an annular positioning groove is provided on the lower side of the locking ring, and the positioning column extends into the positioning groove.

6. The novel polyester melt spinning assembly according to claim 1, characterized in that: A sealing gasket is arranged between the sand cup and the spinneret.

7. The novel polyester melt spinning assembly according to claim 5, characterized in that: The outer side of the locking ring is provided with an external thread, and the inner wall of the upper part of the component housing is provided with an internal thread matching the external thread.

8. The novel polyester melt spinning assembly according to claim 1, characterized in that: The number of the positioning posts is two, the two positioning posts are symmetrically arranged, a positioning sleeve is arranged between the two inner cavities, and the bottom end of the positioning post is inserted into the positioning sleeve.

9. The novel polyester melt spinning assembly according to claim 1, characterized in that: The guide surface is in a slope shape.

10. The novel polyester melt spinning assembly according to claim 1, characterized in that: The first filter sand block and the second filter sand block are sintered metal sand blocks.

Images