Spinning metering pump

Abstract

The utility model belongs to the technical field of metering pumps and discloses a spinning metering pump which comprises a pump body, a main shaft, a transmission shaft and a shaft sleeve, and one end face of the shaft sleeve is a flange piece. The flange sheet is fixedly connected with the top of the pump body; the other end of the main shaft penetrates through the shaft sleeve and then is connected with the transmission shaft; and the shaft section of the main shaft in the shaft sleeve is in clearance fit with the shaft sleeve. According to the spinning metering pump, a transmission structure is simplified, the problem that degradation products generated by melt retention pollute melt and produce color silk is greatly solved, meanwhile, the probability that lubrication of the transmission structure is abnormal is reduced, and the quality stability of spinning products is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of metering pump, concretely relates to a spinning metering pump. BACKGROUND

[0002] The spinning metering pump is one of the key equipment in the spinning process, and is mainly used for accurately metering and conveying high-viscosity polymer melt. The equipment usually needs to work in a high-temperature and high-pressure environment for a long time, and its performance is directly related to the quality and production efficiency of the spinning product.

[0003] The working principle of the existing spinning metering pump is that the motor drives the speed reducer and the transmission shaft to rotate, thereby driving the metering pump spindle to rotate. The driving gear and the driven gear in the metering pump form negative pressure through meshing action, so that the melt enters the pump inlet and fills the gear valley area. Since the gear tooth gap structure is consistent, the pump can output a constant amount of melt per revolution, thereby completing the accurate metering of the melt and discharging it from the outlet to meet the production requirements of the spinning process.

[0004] As shown in Figure 6 The transmission structure of the existing German Mahr brand spinning metering pump includes a universal block, a connecting shaft, a spindle, and a support sleeve. The universal block is matched with the connecting shaft and the spindle at the upper and lower ends, respectively. The connecting shaft is connected with the transmission shaft, and the transmission shaft drives the universal block and the spindle to rotate. The universal block is arranged in the support sleeve, the gland is fixed on the upper part of the support sleeve through a screw, and a graphite pad is arranged between the support sleeve and the gland. The melt lubricates the relative rotating parts such as the spindle and the universal block through the lubricating channel of the pump. Finally, part of the melt that plays a lubricating role returns to the inlet, and the other part is discharged from the metering pump head and accumulated in the receiving disc to meet the working requirements of the pump.

[0005] However, the transmission structure of such a metering pump is relatively complex, and it is found in actual use that the gap between the transmission structures is easy to form self-sealing, the melt in the sealed channel degrades, the degradation is sent into the assembly with the operation of the metering pump, and the finished yarn has color problems. At the same time, the complex transmission structure also limits the overflow of the melt upwards, which cannot normally overflow, resulting in abnormal lubrication and color problems.

[0006] Therefore, it is necessary to further optimize the structure of the spinning metering pump to solve the above problems. UTILITY MODEL CONTENTS

[0007] The utility model aims at solving the problems in the prior art, and provides a spinning metering pump.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0009] A spinning metering pump, comprising a pump body, a main shaft and a transmission shaft, further comprising a shaft sleeve, one end face of the shaft sleeve being a flange piece;

[0010] The flange piece is fixedly connected with the top of the pump body;

[0011] One end of the main shaft is located in the pump body, and the other end is connected with the transmission shaft after penetrating through the shaft sleeve;

[0012] The shaft section of the main shaft located in the shaft sleeve is gap-fitted with the shaft sleeve;

[0013] The utility model simplifies transmission structure, thereby reduces melt retention and degradation risk, improves quality stability of spinning product.

[0014] As a preferred technical scheme:

[0015] The spinning metering pump as described above, the flange piece is fixedly connected with the top of the pump body through bolts.

[0016] The spinning metering pump as described above, the shaft sleeve is internally provided with threads, facilitating melt overflow, and effectively isolating external dust and impurities to reduce melt pollution.

[0017] The spinning metering pump as described above, further comprising a connecting shaft; one end of the connecting shaft is connected with the transmission shaft, and the other end is connected with the main shaft.

[0018] The spinning metering pump as described above, the connecting shaft is divided into a shaft section a and a shaft section b along the axial direction thereof; the shaft section a is connected with the end of the main shaft penetrating through the shaft sleeve, and the shaft section b is connected with the transmission shaft.

[0019] The spinning metering pump as described above, an internal hexagonal groove is formed in the shaft section a along the axial direction thereof, the end of the main shaft penetrating through the shaft sleeve is an external hexagonal boss, the external hexagonal boss is located in the internal hexagonal groove, and the two are connected in cooperation.

[0020] The spinning metering pump as described above, the shaft section b is a threaded section, and the transmission shaft is threadedly connected with the threaded section.

[0021] Beneficial effects:

[0022] The spinning metering pump of the utility model simplifies transmission structure, greatly reduces degradation of melt retention to pollute melt and generate colored yarn, reduces the probability of abnormal lubrication of transmission structure, and improves the quality stability of spinning product. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The utility model discloses a spinning metering pump three-dimensional structure schematic diagram;

[0024] Figure 2 The utility model discloses a spinning metering pump cross section structure schematic diagram.

[0025] Figure 3 This utility model provides a three-dimensional structural diagram of the connecting shaft of a spinning metering pump.

[0026] Figure 4 A three-dimensional structural diagram of the main shaft of a spinning metering pump according to this utility model;

[0027] Figure 5 A three-dimensional structural diagram of the bushing of a spinning metering pump according to this utility model;

[0028] Figure 6 This is a cross-sectional structural diagram of a spinning metering pump in the prior art;

[0029] Among them, 1-pump body, 2-main shaft, 3-drive shaft, 4-shaft sleeve, 5-connecting shaft, 6-bolt. Detailed Implementation

[0030] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0031] A spinning metering pump, such as Figures 1-2 As shown, it includes a pump body 1, a main shaft 2, a transmission shaft 3, a bushing 4, and a connecting shaft 5;

[0032] like Figure 1 , Figure 5 As shown, one end face of the bushing 4 is a flange, which is fixedly connected to the top of the pump body 1 by bolts 6; the bushing is threaded inside.

[0033] like Figure 3 As shown, the connecting shaft 5 is divided into shaft segment a and shaft segment b along its axial direction; shaft segment a has an internal hexagonal groove along its axial direction, and shaft segment b is a threaded segment.

[0034] like Figure 2 , Figure 4 As shown, one end of the main shaft 2 is located inside the pump body 1, and the other end passes through the bushing 4. The end of the main shaft 2 that passes through the bushing 4 is an external hexagonal boss, which is located in the internal hexagonal groove of the shaft segment a. The two are connected in a fit; the shaft segment of the main shaft 2 located inside the bushing 4 is in clearance fit with the bushing 4.

[0035] like Figure 2 As shown, the drive shaft 3 is threadedly connected to the shaft segment b of the connecting shaft 5.

Claims

1. A spin metering pump comprising a pump body (1), a spindle (2) and a drive shaft (3), characterized in that It also includes a shaft sleeve (4), one end of the shaft sleeve (4) is a flange piece; The flange piece is fixedly connected with the top of the pump body (1); One end of the main shaft (2) is located in the pump body (1), and the other end passes out of the shaft sleeve (4) and is connected with the transmission shaft (3); The shaft section of the main shaft (2) located in the shaft sleeve (4) is clearance fit with the shaft sleeve (4).

2. A spin metering pump according to claim 1, characterized in that The flange piece is fixedly connected with the top of the pump body (1) through bolts (6).

3. A spin metering pump according to claim 1, wherein The inside of the shaft sleeve is provided with threads.

4. A spin metering pump according to claim 1, wherein It also includes a connecting shaft (5); one end of the connecting shaft (5) is connected with the transmission shaft (3), and the other end is connected with the main shaft (2).

5. A spin metering pump according to claim 4, wherein The connecting shaft (5) is divided into shaft sections a and b along its axial direction; the shaft section a is connected with the end of the main shaft (2) passing out of the shaft sleeve (4), and the shaft section b is connected with the transmission shaft (3).

6. A spin metering pump according to claim 5, wherein An internal hexagonal groove is formed in the inside of the shaft section a along its axial direction, the end of the main shaft (2) passing out of the shaft sleeve (4) is an external hexagonal boss, the external hexagonal boss is located in the internal hexagonal groove, and the two are connected in cooperation.

7. A spin metering pump according to claim 5, wherein The shaft section b is a threaded section, and the transmission shaft (3) is threadedly connected with the threaded section.

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