阅读说明：本技术 一种高性能熔体泵 (High-performance melt pump ) 是由 王小洋 芮玲 陈健朝 于 2020-12-15 设计创作，主要内容包括：本申请涉及化纤机械领域,尤其涉及一种高性能熔体泵,包括泵体,所述泵体内开设有腔体,所述腔体包括依次连通的进料腔、啮合腔和出料腔,所述啮合腔内设有主动齿轮以及与所述主动齿轮啮合的从动齿轮,所述进料腔的径向尺寸朝靠近所述啮合腔方向逐渐增大,所述出料腔的径向尺寸朝远离所述啮合腔方向逐渐变小。本申请提供的高性能熔体泵,其通过明显的中间大两头小的腔体结构,大大提升了齿轮啮合的容积效率,同时中间足够的容腔体积可以有效降低啮合齿的边界尺寸,提升主动齿轮和从动齿轮的啮合效率。(The utility model relates to a chemical fibre machinery especially relates to a high performance melt pump, which comprises a pump body, the cavity has been seted up in the pump body, the cavity is including feeding chamber, meshing chamber and the ejection of compact chamber that communicates in proper order, be equipped with the driving gear in the meshing chamber and with driving gear meshed driven gear, the radial dimension in feeding chamber is towards being close to meshing chamber direction crescent, the radial dimension in ejection of compact chamber is towards keeping away from meshing chamber direction diminishes gradually. The application provides a high performance melt pump, it has promoted gear engagement's volumetric efficiency greatly through the big little cavity structures in middle of obvious, and the sufficient appearance chamber volume in the middle of the while can effectively reduce the boundary size of meshing tooth, promotes driving gear and driven gear's meshing efficiency.)

1. The utility model provides a high performance melt pump, its characterized in that, includes the pump body (1), set up cavity (2) and heating rod (11) that are used for heating cavity (2) in the pump body (1), cavity (2) are including feeding chamber (21), meshing chamber (22) and ejection of compact chamber (23) that communicate in proper order, be equipped with in meshing chamber (22) driving gear (3) and with driven gear (4) of driving gear (3) meshing, the radial dimension of feeding chamber (21) is towards being close to meshing chamber (22) direction crescent, the radial dimension of ejection of compact chamber (23) is towards keeping away from meshing chamber (22) direction diminishes gradually.

2. High-performance melt pump according to claim 1, characterized in that the feed cavity (21) and the discharge cavity (23) are each trapezoidal in longitudinal cross section, the engagement cavity (22) being rectangular in longitudinal cross section.

3. The high-performance melt pump according to claim 1, wherein the meshing cavity (22) is provided with concave discharge cavities (221) on two opposite side walls, the gear teeth on two opposite sides of the driving gear (3) and the driven gear (4) respectively extend into the corresponding discharge cavities (221), and the depth of the gear teeth of the driving gear (3) and the driven gear (4) respectively extending into the corresponding discharge cavities (221) is one fifth to one third of the diameter of the driving gear (3).

4. The high-performance melt pump according to claim 1, wherein a cover plate (5), a support end cover (6) and a seal end cover (7) are sequentially arranged on one side of the pump body (1) in a direction away from the pump body (1), the support end cover (6) comprises an embedded portion (61) embedded in the cover plate (5) and a flange portion (62) located between end faces of the cover plate (5) and the seal end cover (7), the driving gear (3) comprises an input shaft (31) axially extending towards two ends, and an extending end of the input shaft (31) sequentially penetrates through the cover plate (5), the support end cover (6) and the seal end cover (7).

5. The high-performance melt pump according to claim 4, characterized in that the flange part (62) forms a seal with the end face of the cover plate (5) at the end face close to the cover plate (5) by means of a first seal (63), the flange part (62) is provided with a flange (621) at the end face remote from the cover plate (5) against the end closure (7), and a sealing cavity accommodating a second seal (64) is formed between the inner side of the flange (621) and the end closure (7).

6. The high-performance melt pump according to claim 4, characterized in that a third seal (65) is provided between the end face of the cover plate (5) and the end face of the pump body (1).

7. The high performance melt pump of claim 4, wherein the input shaft (31) is sleeved with a first bearing (8) in the pump body (1), and the first bearing (8) is in clearance fit with the input shaft (31).

8. The high performance melt pump of claim 4, wherein there is a clearance fit between the cover plate (5) and the input shaft (31).

9. A high performance melt pump according to claim 7, characterized in that the ends and sides of the first bearing (8) are provided with flow defining grooves.

10. The high performance melt pump of claim 5, wherein a cooling water channel (12) is provided in the support end cap (6) around the cavity (2).

[ technical field ] A method for producing a semiconductor device

The application relates to the field of chemical fiber machinery, in particular to a high-performance melt pump.

[ background of the invention ]

The melt pump is widely applied to extrusion molding of plastic, resin, rubber and chemical fiber products, mainly plays roles in conveying, pressurizing and metering high-temperature and high-viscosity polymer melts, generally realizes quantitative discharge in a gear meshing mode, and has the advantages of small volume of a gear meshing cavity, high boundary size of gear meshing teeth and low meshing efficiency of the existing melt pump.

[ summary of the invention ]

An object of this application is to provide a high performance melt pump, and it has promoted gear engagement's volumetric efficiency greatly through the big little cavity structures in middle of obvious, and the sufficient appearance chamber volume in the middle of the while can effectively reduce the boundary dimension of meshing tooth, promotes driving gear and driven gear's meshing efficiency.

The application is realized by the following technical scheme:

the utility model provides a high performance melt pump, includes the pump body, seted up the cavity in the pump body, the cavity is including feeding chamber, meshing chamber and the ejection of compact chamber that communicates in proper order, be equipped with the driving gear in the meshing chamber and with driving gear engaged driven gear, the radial dimension in feeding chamber is towards being close to meshing chamber direction crescent, the radial dimension in ejection of compact chamber is towards keeping away from meshing chamber direction diminishes gradually.

According to the high-performance melt pump, the longitudinal sections of the feeding cavity and the discharging cavity are both trapezoidal, and the longitudinal section of the meshing cavity is rectangular.

As above high performance melt pump, the meshing chamber has seted up the row's of indent cavity respectively at the both sides wall that backs on the back, the teeth of a cogwheel of driving gear and driven gear's back of the back both sides are stretched into respectively and are arranged in the cavity correspondingly, the degree of depth that driving gear and driven gear stretched into respectively and arrange the cavity correspondingly is driving gear diameter one fifth to one third.

As above high performance melt pump, a side direction of the pump body is kept away from the direction of the pump body and is equipped with apron, support end cover and end cover in proper order, support the end cover including the embedding portion in the apron and be located the flange portion between the terminal surface of apron and end cover, the driving gear includes the input shaft that stretches out to both ends axial, the end that stretches out of input shaft passes in proper order apron, support end cover and end cover.

According to the high-performance melt pump, the flange part forms a seal with the end face of the cover plate through the first sealing element at the end face close to the cover plate, the flange part is provided with the flange abutting against the sealing end cover at the end face far away from the cover plate, and a sealing cavity accommodating the second sealing element is formed between the inner side of the flange and the sealing end cover.

According to the high-performance melt pump, the third sealing element is arranged between the end face of the cover plate and the end face of the pump body.

According to the high-performance melt pump, the input shaft is sleeved with the first bearing in the pump body, and the first bearing is in clearance fit with the input shaft.

In the high performance melt pump described above, the cover plate is in clearance fit with the input shaft.

In the high performance melt pump described above, the end and the side of the first bearing are provided with flow-limiting grooves.

According to the high-performance melt pump, the cooling water channel surrounding the cavity is arranged in the supporting end cover.

Compared with the prior art, the method has the following advantages:

1. high performance melt pump has promoted gear engagement's volumetric efficiency greatly through obvious big two little cavity structures in the middle, and the sufficient appearance chamber volume in the middle of the while can effectively reduce the boundary size of meshing tooth, promotes driving gear and driven gear's meshing efficiency.

2. Through tertiary sealed, provide good sealing performance, both can guarantee stable discharge pressure, can adapt to more abominable operational environment again.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a high performance melt pump according to an embodiment of the present disclosure.

Fig. 2 is a sectional view taken along the direction a of fig. 1.

Fig. 3 is an enlarged view of a portion F of fig. 2.

Fig. 4 is a sectional view taken along the direction b of fig. 1.

Fig. 5 is a cross-sectional view taken along the direction c of fig. 1.

[ detailed description ] embodiments

In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As shown in fig. 1 to 5, the embodiment of the present application provides a high performance melt pump, including the pump body 1, cavity 2 has been seted up in the pump body 1, cavity 2 is including feeding chamber 21, meshing chamber 22 and the ejection of compact chamber 23 that communicate in proper order, be equipped with in the meshing chamber 22 driving gear 3 and with driven gear 4 of driving gear 3 meshing, the radial dimension of feeding chamber 21 is towards being close to meshing chamber 22 direction crescent, the radial dimension of ejection of compact chamber 23 is towards keeping away from meshing chamber 22 direction diminishes gradually. The driving gear 3 and the driven gear 4 can be helical gears.

During operation, under the meshing drive of the driving gear 3 and the driven gear 4 in the meshing cavity 22, conveyed materials are extruded from the feeding cavity 21 to the discharging cavity 23, and it should be noted that when the high-performance melt pump is detected that materials enter and build pressure, the driven gear starts to act, rotates at a low speed first, and then gradually accelerates to a set displacement and pressure. In this scheme, high performance melt pump has promoted gear engagement's volumetric efficiency greatly through obvious middle big little cavity structures in both ends, and the sufficient appearance chamber volume in the middle of the while can effectively reduce the marginal size of meshing tooth, promotes driving gear 3 and driven gear 4's meshing efficiency.

Specifically, the longitudinal sections of the feeding cavity 21 and the discharging cavity 23 are trapezoidal, and the longitudinal section of the meshing cavity 22 is rectangular. The processing is more convenient, so that a cavity structure with a large middle and two small ends is formed.

Furthermore, the meshing cavity 22 is respectively provided with concave discharging cavities 221 on two opposite side walls, the gear teeth on two opposite sides of the driving gear 3 and the driven gear 4 respectively extend into the corresponding discharging cavities 221, and the depth of the driving gear 3 and the driven gear 4 respectively extending into the corresponding discharging cavities 221 is one fifth to one third of the diameter of the driving gear 3. One sides of the driving gear 3 and the driven gear 4 are meshed, and the two outer sides are respectively positioned in the discharging concave cavity 221, so that the boundary size of the meshing teeth of the gears is increased, and the meshing efficiency is improved.

Further, one side of the pump body 1 is equipped with apron 5, support end cover 6 and end cover 7 in proper order to the direction of keeping away from the pump body 1, support end cover 6 including the embedding portion 61 in the apron 5 and be located the flange portion 62 between the terminal surface of apron 5 and end cover 7, driving gear 3 includes the input shaft 31 that stretches out to both ends axial, the end that stretches out of input shaft 31 passes in proper order apron 5, support end cover 6 and end cover 7. Of course, based on the requirement of stability, the other side of the pump body 1 is symmetrically provided with a cover plate 5, a support end cover 6 and a seal end cover 7, the seal end cover 7 is used for positioning the end of the input shaft, the support end cover 6 provides end support for the input shaft, and the cover plate 5 is used for supporting the support end cover 6. The input shaft 31 can be connected with a variable frequency motor through a split type coupler so as to provide power. The output pressure requirements of various working conditions can be met by adjusting the rotating speed.

Furthermore, the flange part 62 forms a seal with the end surface of the cover plate 5 at the end surface close to the cover plate 5 by the first sealing member 63, the flange part 62 is provided with a flange 621 abutting against the end cover 7 at the end surface far from the cover plate 5, and a sealing cavity accommodating the second sealing member 64 is formed between the inner side of the flange 621 and the end cover 7. A third sealing element 65 is arranged between the end surface of the cover plate 5 and the end surface of the pump body 1. In particular, the first, second and third sealing members may be of rubber material. The second sealing element 64 is used for controlling filtrate seeped from the inner side of the shaft, and the first sealing element, the second sealing element and the third sealing element are combined to form three-stage sealing, so that excellent sealing performance is provided, stable discharging pressure can be guaranteed, and the three-stage sealing device can adapt to a more severe working environment.

Preferably, the input shaft 31 is sleeved with a first bearing 8 in the pump body 1, and the first bearing 8 is in clearance fit with the input shaft 31. The cover plate 5 is in clearance fit with the input shaft 31. The two clearance fit can play the roles of stabilizing the system operation and reducing the system leakage.

Preferably, the end and the side of the first bearing 8 are provided with a flow limiting groove. The device is used for maintaining the stability of the internal working pressure of the high-performance melt pump.

In order to ensure the overall mechanical property and thermodynamic property of the high-performance melt pump, a heating rod 11 for heating the cavity 2 is arranged in the pump body 1, and a cooling water channel 12 surrounding the cavity 2 is arranged in the supporting end cover 6. One of them embodiment is not limited, and many heating rods run through apron 5 and enclose along week portion and establish, heat cavity 2 after the circular telegram, and, apron 5 is used for supporting on the one hand support end cover 6, and on the other hand is sealed with the meshing chamber of the pump body carries out the laminating, provides the heating action face of heating rod, follows the meshing chamber and is heated deformation together to guarantee the holistic mechanical properties of high performance melt pump and thermodynamic property. In addition, the heating of heating rod cooperates with the cooling effect of cooling water course 12, can be according to different material requirements, selects the operating temperature of high performance melt pump.

In summary, the present application has, but is not limited to, the following beneficial effects:

1. high performance melt pump has promoted gear engagement's volumetric efficiency greatly through obvious big two little cavity structures in the middle, and the sufficient appearance chamber volume in the middle of the while can effectively reduce the boundary size of meshing tooth, promotes driving gear 3 and driven gear 4's meshing efficiency.

2. Through tertiary sealed, provide good sealing performance, both can guarantee stable discharge pressure, can adapt to more abominable operational environment again.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application. Furthermore, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms disclosed. Similar or identical methods, structures, etc. as used herein, or several technical inferences or substitutions made on the concept of the present application should be considered as the scope of the present application.