A thin spinning metering pump

Abstract

The invention discloses a thin spinning metering pump, which belongs to the technical field of spinning mechanical equipment. The thin spinning metering pump is a one-inlet and multiple-outlet structure, and comprises a pump plate, a gear plate and a cover plate from bottom to top, and a driving shaft penetrating the cover plate and the gear plate, wherein the number of the pump plate and the number of the gear plate are both one, and a planetary gear system arranged in the gear plate is used to drive the central gear by the rotation of a motor, and then precise control of the material is achieved through the meshing of the central gear and the planetary gear; compared with traditional metering pumps, the metering pump of the invention has a greatly reduced thickness, requires less processing materials, has a simple processing technology, and has a low processing cost, and is more convenient to disassemble and replace during use.

Description

Technical Field

[0001] The invention belongs to the technical field of spinning mechanical equipment, and in particular relates to a spinning metering pump with a single-layer gear plate structure. Background Art

[0002] A spinning machine refers to a mechanical device that processes polymer solution or polymer melt into filaments through spinning technology. During the spinning process, the polymer solution or polymer melt first passes through a metering pump, is filtered through a filter, and then is sent to a spinneret. Then, filamentary fluid is ejected from the spinneret holes on the spinneret. The filamentary fluid is subjected to a coagulation bath, and the fluid is coagulated into a solid filament. The filamentary fluid is then closed after cleaning or stretching, completing the entire spinning process.

[0003] During the spinning process, the metering pump controls the flow rate and entry speed of the polymer solution or polymer melt into the spinneret holes in the spinneret, and can control the spinning speed, the ejection speed of the ejected filaments, etc.; it can ensure the uniformity of the size of the filaments and improve the degree of automation of the spinning process.

[0004] In the prior art, spinning metering pumps are usually multi-layer structures, which work together to achieve the metering process. However, metering pumps with multi-layer structures are thick and heavy, and are inconvenient to install, maintain and disassemble. At the same time, metering pumps with multi-layer structures are difficult to process and consume a lot of materials, so the production and processing costs are high. Summary of the invention

[0005] The purpose of the present invention is to provide a thin spinning metering pump to solve the technical problems mentioned in the background technology.

[0006] In order to achieve the above object, the present invention discloses a thin spinning metering pump, wherein the thin spinning metering pump comprises 1 feed inlet and n material output holes, wherein n>1 and n is an integer; the thin spinning metering pump comprises a pump plate, a gear plate and a cover plate from bottom to top, and a driving shaft penetrating the cover plate and the gear plate;

[0007] A feed port is provided at the center of the lower surface of the pump plate. The feed port is a groove. n material inlet holes are provided in the groove of the feed port. The n material inlet holes penetrate from the lower surface of the pump plate to the upper surface of the pump plate and are evenly distributed on the upper surface of the pump plate. A material output hole is provided at a position adjacent to each material inlet hole on the upper surface of the pump plate. Each material output hole penetrates from the upper surface of the pump plate to the lower surface of the pump plate and is evenly distributed on the lower surface of the pump plate.

[0008] The gear plate is provided with n+1 gear placement holes, which are through holes, one of which is located at the center of the gear plate, and the other n gear placement holes are evenly arranged around the center of the gear plate. A gear is placed in each gear placement hole, and the gear located at the center of the gear plate is the center gear, and the driving shaft is inserted into the shaft hole of the center gear; the gears placed in the other n gear placement holes are planetary gears, and the n+1 gears placed in the n+1 gear placement holes constitute a planetary gear system, in which the left and right sides of the meshing position of every two gears are respectively connected with a material inlet hole and a material outlet hole on the upper surface of the pump plate;

[0009] The driving shaft is connected to the motor. The rotation of the motor drives the driving shaft and the center gear to rotate in turn. The center gear and the planetary gear mesh with each other and rotate. The meshing rotation of the planetary gear system is used to control the flow rate and inflow speed of the material entering the material output port, thereby realizing the metering process of the polymer solution or polymer melt.

[0010] A pump plate driving shaft placement hole is provided at the center of the upper surface of the pump plate, and the pump plate gear shaft placement hole is a blind hole; a cover plate driving shaft insertion through hole is provided at the center of the cover plate;

[0011] Mounting holes are arranged at corresponding positions on the pump plate, the gear plate and the cover plate.

[0012] Furthermore, the material inlet hole and the material outlet hole are both inclined holes, and the structures of the inclined holes are the same.

[0013] Furthermore, said n=12.

[0014] Furthermore, the feed port is a hemispherical groove structure, and inside the hemispherical groove structure, there are 12 material entry holes, and the 12 material entry holes are distributed in two layers along the inner wall of the hemispherical groove structure, the layer close to the top of the hemispherical groove structure is recorded as the inner layer, and the other layer is recorded as the outer layer, and each layer has 6 material entry holes evenly distributed; the 12 material entry holes are evenly distributed on the upper surface of the pump plate in two concentric circle structures around the center of the upper surface of the pump plate, and each concentric circle structure has 6 material entry holes distributed, the 6 material entry holes distributed on the concentric circle structure with a smaller radius are respectively connected to the 6 material entry holes on the inner layer of the feed port, and the 6 material entry holes distributed on the concentric circle structure with a larger radius are respectively connected to the 6 material entry holes on the outer layer of the feed port.

[0015] Furthermore, on the lower surface of the pump plate, 12 material output holes are evenly distributed on the lower surface of the pump plate in two concentric circle structures around the center of the lower surface of the pump plate, and each concentric circle structure is provided with 6 material output holes. The 6 material output holes distributed on the concentric circle structure with a smaller radius are respectively connected with the 6 material output holes distributed on the concentric circle structure with a smaller radius on the upper surface of the pump plate, and the 6 material output holes distributed on the concentric circle structure with a larger radius are respectively connected with the 6 material output holes distributed on the concentric circle structure with a larger radius on the upper surface of the pump plate.

[0016] Furthermore, on the gear plate, 12 planetary gears are arranged in two circles around the central gear, namely, the inner ring planetary gears and the outer ring planetary gears, the inner ring planetary gears are meshed with the central gear, and the outer ring planetary gears are meshed with the inner ring planetary gears, and the number of gears in the inner ring planetary gears and the outer ring planetary gears are 6 respectively.

[0017] Furthermore, a plurality of first cover plate mounting through holes and a plurality of second cover plate mounting through holes are provided on the cover plate, and the first cover plate mounting through holes and the second cover plate mounting through holes are evenly distributed in two concentric circle structures around the center of the cover plate active shaft placement hole, and the concentric circle structure radius of the first cover plate mounting through holes is smaller than the concentric circle structure radius of the second cover plate mounting through holes.

[0018] Furthermore, on the gear plate and the pump plate, at positions corresponding to the first mounting holes and the second mounting holes of the cover plate, the same number of first mounting holes of the gear plate and the second mounting holes of the gear plate, as well as first mounting holes of the pump plate and the second mounting holes of the pump plate are also provided.

[0019] Furthermore, the number of the first mounting through holes of the cover plate and the number of the second mounting through holes of the cover plate are both 6.

[0020] Furthermore, the second mounting hole of the pump plate is a blind hole.

[0021] The thin spinning metering pump of the present invention is installed in the following order: (1) the pump plate and the gear plate are placed in order from bottom to top, and the gears are placed at the corresponding positions in the gear placement hole in the gear plate; (2) the driving shaft is inserted into the gear shaft hole of the central gear of the gear plate; (3) the cover plate is placed above the gear plate, the driving shaft passes through the driving shaft insertion hole of the gear plate, the bottom of the driving shaft falls into the driving shaft insertion hole on the upper surface of the pump plate, the top of the driving shaft passes through the driving shaft insertion hole of the cover plate, and extends to the outside of the cover plate; (4) the fastening screws are respectively passed through the second mounting hole of the cover plate, the second mounting hole of the gear plate and the second mounting hole of the pump plate from the top of the cover plate, and tightened. The thin spinning metering pump is assembled.

[0022] When the thin spinning metering pump is in use, the thin spinning metering pump is fixed on the spinning equipment through the first mounting hole of the cover plate, the first mounting hole of the gear plate and the first mounting hole of the pump plate, and can be used in conjunction with the spinning machine.

[0023] Compared with existing products, the thin spinning metering pump of the present invention has the following advantages:

[0024] (1) The pump plate and the gear plate in the thin spinning metering pump of the present invention are both single-layer structures, which greatly reduces the thickness of the metering pump, saves raw materials, and reduces material costs;

[0025] (2) The thin spinning metering pump of the present invention has a simple processing technology and is easy to operate;

[0026] (3) The thin spinning metering pump of the present invention can realize accurate metering control of polymer solution or polymer melt through the rotation of the planetary gear system, and the control process is more accurate;

[0027] (4) The thin spinning metering pump of the present invention can change the number of material inlet holes and material outlet holes according to specific application scenarios, and can flexibly adjust the size and structure of the product, so it has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 : Schematic diagram of the structure of the thin spinning metering pump after assembly in Example 1.

[0029] Figure 2 : Schematic diagram of the structure of the lower surface of the pump plate in Example 1.

[0030] Figure 3 Schematic diagram of the three-dimensional structure of the feed port in Example 1.

[0031] Figure 4 : Schematic diagram of the inclined hole structure of the material entry hole in Example 1.

[0032] Figure 5 : Schematic diagram of the structure of the upper surface of the pump plate in Example 1.

[0033] Figure 6 : Schematic diagram of the structure after the gear plate is placed above the pump plate in Example 1.

[0034] Figure 7 : Figure 6 A partial enlarged view of area A in the middle.

[0035] Figure 8 : Schematic diagram of the structure of the cover plate in Example 1.

[0036] Explanation of the accompanying drawings: 1-pump plate; 2-gear plate; 3-cover plate; 4-driving shaft; 5-fastening screw; 11-feeding port; 111-material entry hole; 1111-inner layer; 1112-outer layer; 112-material output hole; 21-center gear; 22-planetary gear; 23-center gear shaft hole; 31-cover plate driving shaft insertion hole; 32-cover plate first mounting hole; 33-cover plate second mounting hole; 24-gear plate first mounting hole; 25-gear plate second mounting hole; 12-pump plate driving shaft placement hole; 13-pump plate first mounting hole; 14-pump plate second mounting hole. DETAILED DESCRIPTION

[0037] The technical solution of the present invention is described in detail below through specific embodiments.

[0038] Example 1

[0039] like Figure 1-8 The overall and local structural schematic diagrams of the thin spinning metering pump are given.

[0040] In this embodiment 1, the thin spinning metering pump has a 1-inlet 12-outlet structure, that is, the metering pump includes 1 feed inlet for the polymer solution or polymer melt, and 12 discharge outlets for the polymer solution or polymer melt.

[0041] The thin spinning metering pump includes a pump plate 1, a gear plate 2 and a cover plate 3 from bottom to top, and a driving shaft 4 that passes through the cover plate 3 and the gear plate 2. Figure 1 , which is a schematic diagram of the structure after the pump plate 1, the gear plate 2 and the cover plate 3 are assembled. The pump plate 1, the gear plate 2 and the cover plate 3 are detachably connected, specifically connected together by fastening screws 5, and the driving shaft 4 is located at the center of the metering pump. The pump plate 1, the gear plate 2 and the cover plate 3 are all cylindrical structures, and the outer diameters of the three cylindrical structures are the same.

[0042] like Figure 2 , which is a schematic diagram of the structure of the lower surface of the pump plate 1. A feed port 11 is provided at the center of the lower surface of the pump plate 1. The feed port 11 is a hemispherical groove structure. Inside the hemispherical groove structure, 12 material entry holes 111 are provided. Specifically, Figure 3 As shown, 12 material entry holes 111 are distributed in two layers along the inner wall of the hemispherical groove structure. The layer close to the top of the hemispherical groove structure is recorded as the inner layer 1111, and the other layer is recorded as the outer layer 1112. Each layer has 6 material entry holes evenly distributed, and the 12 material entry holes 111 are all inclined holes. Figure 4 As shown, it penetrates from the lower surface of the pump plate 1 to the upper surface of the pump plate 1.

[0043] like Figure 5As shown, it is a schematic diagram of the structure of the upper surface of the pump plate 1, 12 material inlet holes 111 are evenly distributed on the upper surface of the pump plate 1 in two concentric circle structures around the center of the upper surface of the pump plate, and 6 material inlet holes 111 are distributed on each concentric circle structure, and the 6 material inlet holes 111 distributed on the concentric circle structure with a smaller radius are respectively connected with the 6 material inlet holes 111 distributed on the inner layer 1111 in the inner wall of the hemispherical groove structure of the feed port 11 on the lower surface of the pump plate 1, and the 6 material inlet holes 111 distributed on the concentric circle structure with a larger radius are respectively connected with the 6 material inlet holes 111 distributed on the outer layer 1112 in the inner wall of the hemispherical groove structure of the feed port on the lower surface of the pump plate 1; on the upper surface of the pump plate 1, a material output hole 112 is provided at a position adjacent to each material inlet hole 111, and each material output hole 112 is also an inclined hole, and the inclined hole structure is the same as that of the material input hole 111, and passes through from the upper surface of the pump plate 1 to the lower surface of the pump plate 1, as shown in FIG. Figure 2 As shown, on the lower surface of the pump plate 1, 12 material output holes 112 are evenly distributed on the lower surface of the pump plate 1 in two concentric circle structures around the center of the lower surface of the pump plate 1, and 6 material output holes 112 are distributed on each concentric circle structure. The 6 material output holes 112 distributed on the concentric circle structure with a smaller radius are respectively connected to the 6 material output holes 112 distributed on the concentric circle structure with a smaller radius on the upper surface of the pump plate 1. Similarly, the 6 material output holes 112 distributed on the concentric circle structure with a larger radius are respectively connected to the 6 material output holes 112 distributed on the concentric circle structure with a larger radius on the upper surface of the pump plate 1.

[0044] like Figure 6 and 7 As shown, the gear plate 2 is located at the upper part of the upper surface of the pump plate 1, and a plurality of gear placement holes are provided on the gear plate 2, and gears are placed in the gear placement holes. The plurality of gears form a planetary gear system, and a central gear 21 is located at the center of the gear plate. Two circles of planetary gears 22 are provided around the central gear, which are respectively connected to an inner ring planetary gear and an outer ring planetary gear. The inner ring planetary gears are meshed with the central gears, and the outer ring planetary gears are meshed with the inner ring planetary gears. The number of gears in the inner ring planetary gears and the outer ring planetary gears are 6 respectively, and each planetary gear 22 has the same size. In the planetary gear system, the left and right sides of the meshing position of every two gears are respectively connected to a material inlet hole 111 and a material outlet hole 112 on the upper surface of the pump plate 1.

[0045] The upper and lower surfaces of the cover plate 3 have the same structure. Figure 8As shown, a cover plate driving shaft insertion through hole 31 is provided at the center position of the cover plate 3, and a cover plate first mounting through hole 32 and a cover plate second mounting through hole 33 are provided around the cover plate driving shaft insertion through hole 31 with the center of the circle of the cover plate 3 as the center. The cover plate first mounting through hole 32 and the cover plate second mounting through hole 33 are evenly distributed in two concentric circles around the center of the cover plate driving shaft placement hole 31, and the concentric circle structure radius of the cover plate first mounting through hole 32 is smaller than the concentric circle structure radius of the cover plate second mounting through hole 33. The number of the cover plate first mounting through hole 32 and the cover plate second mounting through hole 33 are both 6.

[0046] On the gear plate 3, at positions corresponding to the first mounting through holes 32 of the cover plate and the second mounting through holes 33 of the cover plate, the same number of gear plate first mounting through holes 24 and gear plate second mounting through holes 25 are also provided respectively; on the pump plate 1, at positions corresponding to the first mounting through holes 32 of the cover plate, the same number of pump plate first mounting through holes 13 are provided, and at positions on the upper surface of the pump plate 1 corresponding to the second mounting through holes 33 of the cover plate, the same number of pump plate second mounting holes 14 are provided, and the pump plate second mounting holes 14 are blind holes, and the depth of the pump plate second mounting holes 14 is less than the thickness of the pump plate 1.

[0047] A pump plate driving shaft placement hole 12 is provided at the center of the upper surface of the pump plate 1 , and the pump plate gear shaft placement hole 12 is a blind hole.

[0048] When installing the thin spinning metering pump, proceed in the following order: (1) Place the pump plate 1 and the gear plate 2 in order from bottom to top, and place the gears at the corresponding positions in the gear placement hole in the gear plate 2; (2) Insert the driving shaft into the gear shaft hole 23 of the central gear of the gear plate; (3) Place the cover plate 3 above the gear plate 2, and the driving shaft 4 passes through the driving shaft insertion hole of the gear plate 2. The bottom of the driving shaft 4 falls into the driving shaft insertion hole 13 on the upper surface of the pump plate 1, and the top of the driving shaft 4 passes through the cover plate driving shaft insertion hole 13 and extends to the outside of the cover plate 3; (4) Six fastening screws 5 are respectively passed through the second mounting hole 33 of the cover plate, the second mounting hole 25 of the gear plate and the second mounting hole 14 of the pump plate from the top of the cover plate 3, and tightened. The thin spinning metering pump is assembled. When the thin spinning metering pump is used, it is fixed on the spinning equipment through the first mounting hole 32 of the cover plate, the first mounting hole 24 of the gear plate and the first mounting hole 13 of the pump plate, and then it can be used.

[0049] The working principle of this thin spinning metering pump is as follows:

[0050] The driving shaft 4 is connected to the motor. The rotation of the motor drives the driving shaft 4 to rotate. The driving shaft 4 drives the central gear 21 to rotate, and then drives the inner ring planetary gear meshing with the central gear 21 to rotate, and then drives the outer ring planetary gear to rotate. The material is fed into the feed port on the lower surface of the pump plate 1. The material is distributed into 12 material inlet holes 111, and flows into the upper surface of the pump plate 1 along the inclined holes of the material inlet holes 111. The meshing rotation of the planetary gear 22 drives the material in the material inlet hole 111 to flow into the adjacent material output hole 112, and then flows into the lower surface of the pump plate 1 along the inclined holes of the material output hole 112. The tooth height, tooth thickness and gear speed of each gear in the planetary gear system are all precisely designed, and the amount of material flowing into each material output hole 112 can be precisely adjusted, that is, the purpose of metering is achieved. Each material output hole 112 on the lower surface of the pump plate 1 is connected to a spinneret, that is, the spinning process is metered and controlled.

[0051] In other embodiments, the thin spinning metering pump can be designed as a 1-in n-out structure, where n is an integer, n>1, and n≠12. The number of circles of the planetary gears around the central gear and the number of gears in each circle of the planetary gears can be adjusted according to the number of n, that is, the structure of the metering pump can be adjusted according to the actual spinning needs. Therefore, the structure of the thin spinning metering pump is more flexible and can meet the use requirements of different spinning machines.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A thin spinning metering pump, characterized in that: The thin spinning metering pump comprises 1 feed inlet and n material output holes, wherein n>1 and n is an integer; the thin spinning metering pump comprises a pump plate, a gear plate and a cover plate from bottom to top, and a driving shaft penetrating the cover plate and the gear plate; A feed port is provided at the center of the lower surface of the pump plate. The feed port is a groove. n material inlet holes are provided in the groove of the feed port. The n material inlet holes penetrate from the lower surface of the pump plate to the upper surface of the pump plate and are evenly distributed on the upper surface of the pump plate. A material output hole is provided at a position adjacent to each material inlet hole on the upper surface of the pump plate. Each material output hole penetrates from the upper surface of the pump plate to the lower surface of the pump plate and is evenly distributed on the lower surface of the pump plate. The gear plate is provided with n+1 gear placement holes, which are through holes, one of which is located at the center of the gear plate, and the other n gear placement holes are evenly arranged around the center of the gear plate, and a gear is placed in each gear placement hole. The gear located at the center of the gear plate is the center gear, and the driving shaft is inserted into the gear shaft hole of the center gear; the gears placed in the other n gear placement holes are planetary gears, and the n+1 gears placed in the n+1 gear placement holes constitute a planetary gear system, in which the left and right sides of the meshing position of every two gears are respectively connected with a material inlet hole and a material outlet hole on the upper surface of the pump plate; A pump plate driving shaft placement hole is provided at the center of the upper surface of the pump plate, and the pump plate driving shaft placement hole is a blind hole; a cover plate driving shaft insertion through hole is provided at the center of the cover plate; Mounting holes are provided at corresponding positions on the pump plate, gear plate and cover plate; Said n=12; The feed port is a hemispherical groove structure, and 12 material entry holes are arranged inside the hemispherical groove structure. The 12 material entry holes are distributed in two layers along the inner wall of the hemispherical groove structure, and the layer close to the top of the hemispherical groove structure is recorded as the inner layer, and the other layer is recorded as the outer layer, and each layer has 6 material entry holes evenly distributed; the 12 material entry holes are evenly distributed on the upper surface of the pump plate in two concentric circle structures around the center of the upper surface of the pump plate, and each concentric circle structure has 6 material entry holes distributed, and the 6 material entry holes distributed on the concentric circle structure with a smaller radius are respectively connected to the 6 material entry holes on the inner layer of the feed port, and the 6 material entry holes distributed on the concentric circle structure with a larger radius are respectively connected to the 6 material entry holes on the outer layer of the feed port; On the lower surface of the pump plate, 12 material output holes are evenly distributed on the lower surface of the pump plate in two concentric circle structures around the center of the lower surface of the pump plate, and each concentric circle structure is provided with 6 material output holes, and the 6 material output holes distributed on the concentric circle structure with a smaller radius are respectively connected with the 6 material output holes distributed on the concentric circle structure with a smaller radius on the upper surface of the pump plate, and the 6 material output holes distributed on the concentric circle structure with a larger radius are respectively connected with the 6 material output holes distributed on the concentric circle structure with a larger radius on the upper surface of the pump plate; On the gear plate, 12 planetary gears are arranged in two circles around the central gear, namely inner ring planetary gears and outer ring planetary gears, the inner ring planetary gears are meshed with the central gear, and the outer ring planetary gears are meshed with the inner ring planetary gears, and the number of gears in the inner ring planetary gears and the outer ring planetary gears are 6 respectively; A plurality of first cover plate mounting through holes and a plurality of second cover plate mounting through holes are provided on the cover plate. The first cover plate mounting through holes and the second cover plate mounting through holes are evenly distributed in two concentric circle structures around the center of the cover plate driving shaft insertion through hole. The concentric circle structure radius of the first cover plate mounting through holes is smaller than the concentric circle structure radius of the second cover plate mounting through holes.

2. The thin spinning metering pump according to claim 1, characterized in that: The material inlet hole and the material outlet hole are both inclined holes.

3. The thin spinning metering pump according to claim 1, characterized in that: On the gear plate and the pump plate, at positions corresponding to the first mounting holes and the second mounting holes of the cover plate, the same number of first mounting holes and the second mounting holes of the gear plate, as well as the first mounting holes and the second mounting holes of the pump plate are also provided.

4. The thin spinning metering pump according to claim 3, characterized in that: The number of the first mounting through holes of the cover plate and the number of the second mounting through holes of the cover plate are both 6.

5. The thin spinning metering pump according to claim 3, characterized in that: The second mounting hole of the pump plate is a blind hole.

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