WO2021109759A1

WO2021109759A1 - Triangular rotor pump

Info

Publication number: WO2021109759A1
Application number: PCT/CN2020/124450
Authority: WO
Inventors: 赵凤丽; 查霞红; 李敏行
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2019-12-05
Filing date: 2020-10-28
Publication date: 2021-06-10

Abstract

A triangular rotor pump, comprising a housing, the housing comprising a side wall (100), and a first end cover (210) and a second end cover (220) respectively disposed at two ends of the side wall (100), and further comprising a triangular rotor (300) in the housing and an eccentric assembly (400) that drives the triangular rotor (300), the triangular rotor (300) comprising a rotor body (310) and a sealing member (320) disposed on the rotor body (310), the sealing member (320) being an elastic structural member, the rotor body (310) comprising three top ends (312) and side surfaces (311) respectively facing the first end cover (210) and the second end cover (220), the sealing member (320) comprising three first sealing portions (321) respectively disposed at the three top ends (312), each first sealing portion (321) abutting against the inner surface of the side wall (100) to form a radial sealing surface that blocks adjacent working cavities, the sealing member (320) further comprising two second sealing portions (322), two second sealing portions (322) being respectively disposed at two ends of the rotor body (310) in an axial direction, and the second sealing portions (322) respectively abutting against the first end cover (210) and the second end cover (220) to form an end surface sealing surface, and two ends of the first sealing portion (321) being respectively clearance-free fit with the two second sealing portions (322). Thus, radial sealing and end surface sealing are implemented.

Description

三角转子泵Triangle rotor pump

本申请要求了申请日为2019年12月05日，申请号为201911231423.3和201922153805.0的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent applications whose application date is December 05, 2019, and the application numbers are 201911231423.3 and 201922153805.0, the entire contents of which are incorporated into this application by reference.

技术领域Technical field

本发明涉及转子泵技术领域，特别是涉及一种三角转子泵。The invention relates to the technical field of rotor pumps, in particular to a triangular rotor pump.

背景技术Background technique

在转子泵技术领域，三角转子泵的内部工作腔被三角转子分为三个封闭的空间，借助于三角转子在运动过程中三个封闭容积空间的周期性变化，实现流体输送，而三角转子泵功能实现的前提是泵体容积始终能够保证足够的密封性，因此，密封性成为检验三角转子泵性能的重要指标。In the field of rotor pump technology, the internal working cavity of the triangular rotor pump is divided into three enclosed spaces by the triangular rotor. With the help of the periodic change of the three closed volume spaces during the movement of the triangular rotor, fluid delivery is realized. The prerequisite for the realization of the function is that the volume of the pump body can always ensure sufficient tightness. Therefore, the tightness has become an important index for testing the performance of the triangular rotor pump.

为了提高三角转子泵的密封性，三角转子的三个顶端和两侧端面都需要与泵体内腔壁之间通过接触密封，具体包括径向顶端的可靠密封和两侧端面的可靠密封。目前，根据三角转子泵工作压力不同，现有技术通常采取三种密封方案，当压力要求不高时，三角转子的径向顶端采用密封片和弹簧配合密封，三角转子的两侧端面采用间隙密封；当压力要求较高时，三角转子的径向顶端采用密封片和弹簧配合密封，三角转子的两侧端面采用密封条和弹簧配合密封；如压力要求更高，除了三角转子的径向顶端采用密封片和弹簧配合密封，三角转子的两侧端面采用密封条和弹簧配合密封之外，还需在三角转子的径向顶端的密封片两端加装密封销，以进一步防止液体从密封片和密封销之间的缝隙泄漏，但是这三种密封方案因其结构问题，缝隙均无法完全消除，同时上述密封件加弹簧的方案涉及结构件较多，后续对加工装配工艺、成本要求都很高。In order to improve the sealing performance of the triangular rotor pump, the three top ends and both sides of the triangular rotor need to be sealed by contact with the inner cavity wall of the pump, which specifically includes the reliable sealing of the radial top end and the reliable sealing of the end surfaces on both sides. At present, according to the different working pressures of the triangular rotor pump, the prior art usually adopts three sealing schemes. When the pressure requirement is not high, the radial top of the triangular rotor is sealed with a sealing sheet and a spring, and the two sides of the triangular rotor are sealed with gaps. ; When the pressure requirement is higher, the radial top end of the triangular rotor is sealed with a sealing sheet and a spring, and the two end faces of the triangular rotor are sealed with a sealing strip and a spring; if the pressure requirement is higher, except for the radial top of the triangular rotor The sealing plate and the spring are matched and sealed. In addition to sealing strips and springs on both sides of the triangular rotor, sealing pins must be installed at both ends of the sealing plate at the radial top end of the triangular rotor to further prevent liquid from flowing from the sealing plate and The gap between the sealing pins leaks, but these three sealing schemes cannot completely eliminate the gaps due to their structural problems. At the same time, the above-mentioned sealing element plus spring scheme involves many structural parts, and the subsequent processing and assembly process and cost requirements are very high. .

因此，提供一种密封性能更好，加工装配工艺简单的三角转子泵显得尤为重要。Therefore, it is particularly important to provide a triangular rotor pump with better sealing performance and simple processing and assembly technology.

发明内容Summary of the invention

基于此，有必要针对上述问题，提供一种三角转子泵，该三角转子泵的密封性能更好，加工装配工艺简单。Based on this, it is necessary to solve the above problems and provide a triangular rotor pump, which has better sealing performance and simple processing and assembly technology.

本发明提供一种三角转子泵，包括壳体，所述壳体包括侧壁以及分别设置于所述侧壁两端的第一端盖和第二端盖，还包括设置在所述壳体内的三角转子以及驱动所述三角转子的偏心组件，所述三角转子与所述壳体之间形成三个工作腔，所述三角转子能够被驱动的交替压缩和释放所述工作腔；所述三角转子包括转子本体以及设置于所述转子本体的密封件，所述密封件为弹性结构件，所述转子本体包括三个顶端和分别面对所述第一端盖和所述第二端盖的侧面，其中：所述密封件包括三个分别设置于三个所述顶端的第一密封部，每个所述第一密封部与所述侧壁的内表面相抵接，以形成阻隔相邻所述工作腔的径向密封面；所述密封件还包括第二密封部，所述第二密封部的数量为两个，两个所述第二密封部分别设置于所述转子本体轴向方向的两端，所述第二密封部分别与所述第一端盖和第二端盖相抵接形成端面密封面；所述第一密封部的两端分别与两个所述第二密封部均无间隙配合；所述第一密封部包括凸出于所述顶端的半圆柱形凸起，所述半圆柱形凸起的长度方向与所述转子本体的所述顶端的厚度方向一致，且所述半圆柱形凸起的周向外缘与所述侧壁的内表面相抵接；所述第二密封部包括两组环状弹性件，所述两组环状弹性件分别设置在所述密封件靠近所述第一端盖和所述第二端盖的两个边缘区域，且每一所述环状弹性件与相邻的所述第一端盖或所述第二端盖的内壁相抵接；每一组环状弹性件包括三个首尾连接的弹性边，每一所述弹性边设置在相邻两个所述第一密封部之间、且分别与相邻的两个所述第一密封部相连接，每一所述弹性边包括面对所述第一端盖或所述第二端盖的抵接面，所述抵接面用于与所述第一端盖和所述第二端盖相抵接，以形成所述端面密封面；所述抵接面与相对应的所述第一端盖或所述第二端盖的内壁呈预设角度设置，且所述抵接面远离所述侧面的一端与相对应的所述第一端盖或所述第二端盖的内壁相抵接；每一所述弹性边包括沿着所述弹性边的延伸方向开设的沟槽，每一所述沟槽起始于一个所述第一密封部且终止于相邻的其中一个所述第一密封部、且所述沟槽的两端均至少部分延伸至所述第一密封部上，三个所述沟槽环绕所述转子本体的周向设置、且相邻两个所述沟槽之间不连通。The present invention provides a triangular rotor pump, including a casing, the casing includes a side wall, and a first end cover and a second end cover respectively provided at both ends of the side wall, and further includes a triangular rotor pump provided in the casing. A rotor and an eccentric assembly that drives the triangular rotor. Three working chambers are formed between the triangular rotor and the housing. The triangular rotor can be driven to alternately compress and release the working chambers; the triangular rotor includes A rotor body and a seal provided on the rotor body, the seal is an elastic structural member, the rotor body includes three top ends and side surfaces respectively facing the first end cover and the second end cover, Wherein: the sealing element includes three first sealing parts respectively arranged on the three top ends, each of the first sealing parts abuts against the inner surface of the side wall to form a barrier to the adjacent work The radial sealing surface of the cavity; the sealing element further includes a second sealing part, the number of the second sealing part is two, and the two second sealing parts are respectively arranged at two axial directions of the rotor body End, the second sealing portion abuts against the first end cover and the second end cover to form an end face sealing surface; both ends of the first sealing portion have no gaps with the two second sealing portions, respectively The first sealing portion includes a semi-cylindrical protrusion protruding from the top end, the length direction of the semi-cylindrical protrusion is consistent with the thickness direction of the top end of the rotor body, and the semi-cylindrical protrusion The outer periphery of the cylindrical protrusion abuts against the inner surface of the side wall; the second sealing portion includes two sets of ring-shaped elastic members, and the two sets of ring-shaped elastic members are respectively arranged near the sealing member. Two edge regions of the first end cover and the second end cover, and each of the ring-shaped elastic members abuts against the inner wall of the adjacent first end cover or the second end cover; Each group of ring-shaped elastic members includes three elastic edges connected end to end, and each of the elastic edges is arranged between two adjacent first sealing parts and is respectively sealed with two adjacent first sealing parts. Each of the elastic edges includes an abutting surface facing the first end cover or the second end cover, and the abutting surface is used for contacting the first end cover and the second end cover. The end caps abut to form the end surface sealing surface; the abutment surface and the corresponding inner wall of the first end cap or the second end cap are arranged at a preset angle, and the abutment surface is far away One end of the side surface is in contact with the inner wall of the corresponding first end cover or the second end cover; each of the elastic edges includes a groove opened along the extension direction of the elastic edge, and each The groove starts from one of the first sealing parts and ends at one of the adjacent first sealing parts, and both ends of the groove at least partially extend to the first sealing part, The three grooves are arranged around the circumference of the rotor body, and two adjacent grooves are not connected.

上述三角转子泵中，第一端盖、第二端盖以及侧壁形成用于容置三角转子的容置空间，三角转子将该容置空间分割成三个工作腔，由于第一密封部的两端分别与两个第二密封部均无间隙配合，以使得第一密封部的两端分别与两个第二密封部均无间隙配合，此时第一密封部和第二密封部始终相接触，在三角转子的旋转过程中第一密封部和第二密封部之间没有间隙，进而使得径向密封面和端面密封面均为连续性的面，第一密封部设置在顶端，并且又与侧壁的内表面相抵接，使得该工作腔被密封，三角转子能够被驱动的交替压缩和释放工作腔，而由于密封件为弹性结构件，以消除相邻工作腔之间的缝隙，使得第一密封部与侧壁的内表面之间具有持续的作用力，进而使得第一密封部与侧壁在轴向上连续接触，从而实现三角转子泵的径向密封；由于密封件为弹性结构件，两个第二密封部分别设置于转子本体轴向方向的两端，并且第二密封部分别与第一端盖和第二端盖相抵接，以使得第二密封部与第一端盖、第二密封部与第二端盖之间具有持续的作用力，进而使得第二密封部与第一端盖和第二端盖在周向上连续接触，从而实现三角转子泵的端面密封，防止流体从三角转子和端盖之间的缝隙流出。上述密封件结构简单，仅通过设置于转子本体就能够实现可靠密封，加工装配工艺简单。In the above triangular rotor pump, the first end cover, the second end cover and the side wall form an accommodating space for accommodating the triangular rotor. The triangular rotor divides the accommodating space into three working chambers. The two ends are respectively matched with the two second sealing parts without clearance, so that the two ends of the first sealing part are respectively matched with the two second sealing parts without clearance. At this time, the first sealing part and the second sealing part are always aligned with each other. Contact, there is no gap between the first sealing part and the second sealing part during the rotation of the triangular rotor, so that both the radial sealing surface and the end sealing surface are continuous surfaces, the first sealing part is arranged at the top, and It abuts against the inner surface of the side wall, so that the working chamber is sealed, and the triangular rotor can be driven to alternately compress and release the working chamber. Since the sealing member is an elastic structural member, the gap between adjacent working chambers is eliminated, so that There is a continuous force between the first sealing part and the inner surface of the side wall, so that the first sealing part and the side wall are in continuous contact in the axial direction, so as to realize the radial sealing of the triangular rotor pump; because the sealing element is an elastic structure The two second sealing parts are respectively arranged at both ends of the rotor body in the axial direction, and the second sealing parts abut against the first end cover and the second end cover respectively, so that the second sealing part and the first end cover , There is a continuous force between the second sealing part and the second end cover, so that the second sealing part is in continuous contact with the first end cover and the second end cover in the circumferential direction, so as to realize the sealing of the end face of the triangular rotor pump and prevent The fluid flows out from the gap between the triangular rotor and the end cover. The above-mentioned seal has a simple structure, a reliable seal can be achieved only by being arranged on the rotor body, and the processing and assembly process is simple.

在其中一个实施例中，所述半圆柱形凸起的内部沿所述转子本体的轴向方向分布有多个第一弹簧，所述第一弹簧的弹性方向垂直于所述侧壁的内表面，以提供切换轴向密封接触的弹性力。In one of the embodiments, a plurality of first springs are distributed in the interior of the semi-cylindrical protrusion along the axial direction of the rotor body, and the elastic direction of the first springs is perpendicular to the inner surface of the side wall , In order to provide the elastic force to switch the axial sealing contact.

上述技术方案中通过第一密封部设置成与转子本体的顶端相匹配的半圆柱形凸起，限定半圆柱形凸起的周向边缘与侧壁的内表面相抵接，以实现三角转子泵的径向密封。In the above technical solution, the first sealing part is set as a semi-cylindrical protrusion matching the top end of the rotor body, and the circumferential edge of the semi-cylindrical protrusion is defined to abut against the inner surface of the side wall, so as to realize the triangular rotor pump. Radial seal.

在其中一个实施例中，每一所述第一密封部上的相邻的所述沟槽的末端之间具有预设距离，所述预设距离大致位于所述第一密封部的周向方向的中间位置，以保证同时获得径向密封效果和端面密封效果。In one of the embodiments, there is a predetermined distance between the ends of adjacent grooves on each of the first sealing portions, and the predetermined distance is approximately located in the circumferential direction of the first sealing portion The middle position to ensure that the radial sealing effect and the end face sealing effect are obtained at the same time.

在其中一个实施例中，所述预设距离大于等于所述第一密封部宽度的1/3，且小于等于所述第一密封部宽度的1/2。In one of the embodiments, the predetermined distance is greater than or equal to 1/3 of the width of the first sealing portion, and less than or equal to 1/2 of the width of the first sealing portion.

上述技术方案中通过设定第一密封部上的预设距离的延伸长度，以使得在保证径向密封的基础上获得较好的端面密封效果。In the above technical solution, the extension length of the preset distance on the first sealing portion is set, so that a better end face sealing effect can be obtained on the basis of ensuring the radial sealing.

在其中一个实施例中，所述沟槽内设有第二弹簧，所述第二弹簧为波浪弹簧，所述波浪弹簧沿着所述沟槽的长度方向布置，以提供切换径向密封接触的弹性力。In one of the embodiments, a second spring is provided in the groove, the second spring is a wave spring, and the wave spring is arranged along the length of the groove to provide a switch for the radial sealing contact. Elasticity.

在其中一个实施例中，所述密封件为一体式结构、且包覆在所述转子本体的外侧，以简化加工装配工艺，同时能够提高密封的可靠性。In one of the embodiments, the sealing element is an integral structure and is wrapped on the outer side of the rotor body to simplify the processing and assembly process and at the same time improve the reliability of the seal.

在其中一个实施例中，所述密封件非转动地套设在所述转子本体外侧，在保证密封可靠性的基础上，避免在旋转时密封件相对转子本体发生滑移。In one of the embodiments, the sealing element is non-rotatably sleeved on the outside of the rotor body, and on the basis of ensuring the reliability of the seal, the sealing element is prevented from slipping relative to the rotor body during rotation.

在其中一个实施例中，所述转子本体还包括周向方向上面向所述侧壁的内表面的第一表面，所述密封件的内壁上设置有用于与所述第一表面配合的第二表面，所述第一表面和所述第二表面配合使所述密封件非转动地套设在所述转子本体外侧，以防止旋转时密封件相对转子本体发生滑移。In one of the embodiments, the rotor body further includes a first surface facing the inner surface of the side wall in the circumferential direction, and the inner wall of the sealing member is provided with a second surface for mating with the first surface. On the surface, the first surface and the second surface cooperate to make the seal non-rotating sleeved on the outer side of the rotor body, so as to prevent the seal from sliding relative to the rotor body during rotation.

在其中一个实施例中，所述第一表面上设有多个凹槽，所述密封件的所述第二表面上设置有多个与所述凹槽互补的凸部，所述凸部与与所述凹槽相匹配、且容置于所述凹槽内使所述密封件相对所述转子本体非转动连接。In one of the embodiments, a plurality of grooves are provided on the first surface, and a plurality of protrusions complementary to the grooves are provided on the second surface of the sealing member, and the protrusions and It matches with the groove and is accommodated in the groove so that the sealing element is non-rotatably connected to the rotor body.

上述技术方案中通过在第一表面上设置凹槽，并在第二表面上设置与凹槽相匹配的凸部，并限定凸部容置在凹槽内，以防止旋转时密封件相对转子本体发生滑移。In the above technical solution, a groove is provided on the first surface, and a convex portion matching the groove is provided on the second surface, and the convex portion is restricted to be accommodated in the groove to prevent the seal from being opposed to the rotor body during rotation. Slippage occurred.

在其中一个实施例中，所述三角转子还包括设置于所述密封件和所述转子本体之间的轴向限位结构，所述轴向限位结构使所述密封件在轴向方向相对所述转子本体不可移动，以将密封件紧贴在转子本体上，防止其在轴向方向上窜动。In one of the embodiments, the triangular rotor further includes an axial limiting structure provided between the sealing element and the rotor body, and the axial limiting structure enables the sealing element to face each other in the axial direction. The rotor body is not movable, so that the seal is tightly attached to the rotor body to prevent it from moving in the axial direction.

在其中一个实施例中，所述轴向限位结构包括设置于所述转子本体周向的台阶结构以及设置于所述密封件上用于与所述台阶结构配合的嵌槽，两个所述第二密封部相互连接成一体，且两个所述第二密封部之间形成有与所述台阶结构配合的所述嵌槽，所述密封件套设于所述转子本体上时，所述台阶结构卡设于所述嵌槽内，以限制所述密封件相对所述转子本体轴向移动。In one of the embodiments, the axial limiting structure includes a stepped structure provided in the circumferential direction of the rotor body and an embedding groove provided on the seal for matching with the stepped structure, and the two The second sealing parts are connected to each other to form an integral body, and the embedding groove that cooperates with the step structure is formed between the two second sealing parts. When the sealing member is sleeved on the rotor body, the The step structure is clamped in the embedding groove to restrict the axial movement of the sealing member relative to the rotor body.

上述技术方案中通过在转子本体周向上设置台阶结构，并在密封件上设置与台阶结构相配合的嵌槽，并限定台阶结构卡设于嵌槽内，以将密封件紧贴在转子本体上，防止其在轴向方向上窜动。In the above technical solution, a step structure is provided in the circumferential direction of the rotor body, and an embedding groove matching the step structure is provided on the seal, and the step structure is limited to be clamped in the embedding groove, so that the seal is tightly attached to the rotor body , To prevent it from moving in the axial direction.

在其中一个实施例中，所述密封件为聚氨酯件或橡胶件。In one of the embodiments, the sealing member is a polyurethane member or a rubber member.

上述技术方案中限定制备密封件为聚氨酯件或橡胶件，以提高抵接时密封件与侧壁的内表面、第一端盖以及第二端盖之间的作用力，但是密封件并不局限于此，还可以为其它弹性结构件。In the above technical solution, the preparation of the sealing element is defined as a polyurethane part or a rubber part to increase the force between the sealing element and the inner surface of the side wall, the first end cover and the second end cover during abutment, but the sealing element is not limited Here, it can also be other elastic structural members.

在其中一个实施例中，每个所述端面密封面和每个所述径向密封面的两端均相交。In one of the embodiments, both ends of each of the end face sealing surfaces and each of the radial sealing surfaces intersect.

上述技术方案中限定每个端面密封面和每个径向密封面的两端均相交，以使得第一密封部的两端分别与两个第二密封部均无间隙配合，进而使得第一密封部和第二密封部始终相接触，在三角转子的旋转过程中第一密封部和第二密封部之间没有间隙，从而使得径向密封面和端面密封面均为连续性的面。In the above technical solution, it is defined that both ends of each end face sealing surface and each radial sealing surface intersect, so that the two ends of the first sealing part are respectively matched with the two second sealing parts without clearance, thereby making the first sealing During the rotation of the triangular rotor, there is no gap between the first sealing part and the second sealing part, so that both the radial sealing surface and the end sealing surface are continuous surfaces.

关于有益效果的说明，针对权利要求1，第一密封部和第二密封部连接的结构的，其有益效果是第一密封部和第二密封部Regarding the description of the beneficial effects, with respect to claim 1, the first sealing part and the second sealing part are connected, and the beneficial effect is that the first sealing part and the second sealing part are connected.

附图说明Description of the drawings

图1为本发明提供的一种三角转子泵的一结构示意图；Figure 1 is a schematic structural diagram of a triangular rotor pump provided by the present invention;

图2为本发明提供的一种三角转子泵的另一结构示意图；Figure 2 is another structural schematic diagram of a triangular rotor pump provided by the present invention;

图3为本发明提供的一种三角转子泵中密封件的一结构示意图；Figure 3 is a schematic structural diagram of a seal in a triangular rotor pump provided by the present invention;

图4为本发明提供的一种三角转子泵中密封件的另一结构示意图；Figure 4 is another structural schematic diagram of a seal in a triangular rotor pump provided by the present invention;

图5为本发明提供的一种三角转子泵中转子本体的一结构示意图。Fig. 5 is a schematic structural diagram of a rotor body in a triangular rotor pump provided by the present invention.

附图标记：Reference signs:

100-侧壁；100-side wall;

200-端盖；200-end cover;

210-第一端盖；220-第二端盖；210-first end cover; 220-second end cover;

300-三角转子；300-triangular rotor;

310-转子本体；310-Rotor body;

311-侧面；312-顶端；313-第一表面；314-凹槽；315-台阶结构；311-side; 312-top; 313-first surface; 314-groove; 315-step structure;

320-密封件；321-第一密封部；322-第二密封部；323-半圆柱形凸起；324-环状弹性件；3241-第二表面；325-弹性边；326-抵接面；327-沟槽；328-凸部；329-嵌槽；320—seal; 321—first seal; 322—second seal; 323—semi-cylindrical protrusion; 324—ring elastic element; 3241—second surface; 325—elastic edge; 326—abutment surface 327-groove; 328-convex part; 329-inlay groove;

400-偏心组件；400-eccentric component;

410-偏心轴；411-偏心部。410-eccentric shaft; 411-eccentric part.

具体实施方式Detailed ways

为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention.

下面结合附图介绍本发明实施例提供的技术方案。The technical solutions provided by the embodiments of the present invention are described below in conjunction with the accompanying drawings.

如图1、图2、图3、图4以及图5所示，本发明提供一种三角转子泵，该三角转子泵用于清洗机中流体的输送，包括壳体，而壳体具有侧壁100以及连接于该侧壁100的端盖200，其中，端盖200包括第一端盖210和第二端盖220，第一端盖210和第二端盖220固定在侧壁100的两端，以形成容置空间，该三角转子泵还包括三角转子300以及驱动该三角转子300的偏心组件400，三角转子300和偏心组件400设置在该容置空间内，并将该容置空间分成三个工作腔；偏心组件400包括偏心轴410，该偏心轴410上具有偏心部411，三角转子300与该偏心部411相连，通过偏心轴410的转动带动三角转子300，以使得三角转子300能够交替压缩和释放工作腔。As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the present invention provides a triangular rotor pump, which is used for conveying fluid in a washing machine, and includes a casing, and the casing has a side wall 100 and an end cover 200 connected to the side wall 100, wherein the end cover 200 includes a first end cover 210 and a second end cover 220, the first end cover 210 and the second end cover 220 are fixed on both ends of the side wall 100 The triangular rotor pump further includes a triangular rotor 300 and an eccentric assembly 400 that drives the triangular rotor 300. The triangular rotor 300 and the eccentric assembly 400 are arranged in the accommodating space, and the accommodating space is divided into three The eccentric assembly 400 includes an eccentric shaft 410, the eccentric shaft 410 has an eccentric portion 411, the triangular rotor 300 is connected to the eccentric portion 411, the rotation of the eccentric shaft 410 drives the triangular rotor 300, so that the triangular rotor 300 can alternate Compress and release the working chamber.

三角转子300包括转子本体310以及密封件320，该密封件320设置于转子本体310，在具体设置时，转子本体310包括分别面对第一端盖210和第二端盖220的两个侧面311、三个顶端312以及连接两个侧面311、且朝向侧壁100的内表面的三个第一表面313，每一顶端312位于相邻两个第一表面313相交处。密封件320为弹性结构件，具有一定的弹性，在受压时能够产生压缩形变，包括三个第一密封部321和两个第二密封部322，其中，每一第一密封部321与侧壁100的内表面相抵接形成径向密封面，以阻隔相邻工作腔，此时第一密封部321被压缩并且第一密封部321受到来自于侧壁100的内表面的挤压力；两个第二密封部322分别设置于转子本体310轴向方向的两端，并且该第二密封部322分别与第一端盖210和第二端盖220相抵接形成端面密封面，并且第一密封部321的两端分别与两个第二密封部322均无间隙配合，此时第一密封部321和第二密封部322始终相接触，在三角转子300的旋转过程中第一密封部321和第二密封部322之间没有间隙，进而使得径向密封面和端面密封面均为连续性的面。The triangular rotor 300 includes a rotor body 310 and a sealing member 320. The sealing member 320 is arranged on the rotor body 310. When specifically arranged, the rotor body 310 includes two side surfaces 311 facing the first end cover 210 and the second end cover 220, respectively. , Three top ends 312 and three first surfaces 313 connecting the two side surfaces 311 and facing the inner surface of the side wall 100, each top end 312 is located at the intersection of two adjacent first surfaces 313. The sealing member 320 is an elastic structural member with a certain degree of elasticity and can produce compression deformation when pressed. It includes three first sealing portions 321 and two second sealing portions 322, wherein each first sealing portion 321 is connected to the side The inner surface of the wall 100 abuts to form a radial sealing surface to block adjacent working chambers. At this time, the first sealing portion 321 is compressed and the first sealing portion 321 receives the pressing force from the inner surface of the side wall 100; two The two second sealing portions 322 are respectively disposed at both ends of the rotor body 310 in the axial direction, and the second sealing portions 322 respectively abut against the first end cover 210 and the second end cover 220 to form end surface sealing surfaces, and the first seal The two ends of the part 321 are respectively matched with the two second sealing parts 322 without clearance. At this time, the first sealing part 321 and the second sealing part 322 are always in contact. During the rotation of the triangular rotor 300, the first sealing part 321 and the second sealing part 322 are in contact with each other. There is no gap between the second sealing portions 322, so that both the radial sealing surface and the end surface sealing surface are continuous surfaces.

上述三角转子泵中，第一端盖210、第二端盖220以及侧壁100形成用于容置三角转子300的容置空间，由于第一密封部321设置在顶端312，而第一密封部321又与侧壁100的内表面相抵接形成径向密封面，第一密封部321的两端分别与两个第二密封部322均无间隙配合，使得径向密封面为连续性的面，该连续性的径向密封面与三角转子300配合将该容置空间分割成三个相互独立的工作腔，三角转子300能够被驱动的交替压缩和释放工作腔，而由于密封件320为弹性结构件，以消除相邻工作腔之间的缝隙，使得第一密封部321与侧壁100的内表面之间具有持续的作用力，进而使得第一密封部321与侧壁100在轴向上连续接触，从而实现三角转子泵的径向密封；由于密封件320为弹性结构件，第二密封部322分别设置于转子本体310轴向方向的两端，第一密封部321的两端分别与两个第二密封部322均无间隙配合，使得端面密封面为连续性的面，并且该第二密封部322分别与第一端盖210和第二端盖220相抵接，此时第二密封部322被压缩并且第二密封部322受到来自于第一端盖210和第二端盖220的挤压力，该连续性的端面密封面使得第二密封部322与第一端盖210、第二密封部322与第二端盖220之间具有持续的作用力，进而使得第二密封部322与第一端盖210和第二端盖220在周向上连续接触，从而实现三角转子泵的端面密封，防止流体从三角转子300和端盖之间的缝隙流出。上述密封件320结构简单，仅通过设置于转子本体310就能够实现可靠密封，加工装配工艺简单。In the above triangular rotor pump, the first end cover 210, the second end cover 220 and the side wall 100 form an accommodation space for accommodating the triangular rotor 300. Since the first sealing portion 321 is provided at the top end 312, the first sealing portion 321 abuts against the inner surface of the side wall 100 to form a radial sealing surface. Both ends of the first sealing portion 321 are respectively matched with the two second sealing portions 322 without clearance, so that the radial sealing surface is a continuous surface. The continuous radial sealing surface cooperates with the triangular rotor 300 to divide the accommodating space into three mutually independent working chambers. The triangular rotor 300 can be driven to alternately compress and release the working chambers, and since the seal 320 is an elastic structure To eliminate the gap between adjacent working chambers, so that there is a continuous force between the first sealing portion 321 and the inner surface of the side wall 100, so that the first sealing portion 321 and the side wall 100 are continuous in the axial direction. Contact, so as to achieve the radial seal of the triangular rotor pump; since the seal 320 is an elastic structural member, the second seal portion 322 is respectively arranged at the two ends of the rotor body 310 in the axial direction, and the two ends of the first seal portion 321 are connected to the two ends respectively. There is no clearance fit between the two second sealing parts 322, so that the sealing surface of the end face is a continuous surface, and the second sealing part 322 abuts against the first end cover 210 and the second end cover 220 respectively. At this time, the second sealing part 322 is compressed and the second sealing portion 322 receives the pressing force from the first end cover 210 and the second end cover 220. The continuous end surface sealing surface makes the second sealing portion 322 and the first end cover 210, second There is a continuous force between the sealing part 322 and the second end cover 220, so that the second sealing part 322 is in continuous contact with the first end cover 210 and the second end cover 220 in the circumferential direction, thereby realizing the end face sealing of the triangular rotor pump , To prevent fluid from flowing out of the gap between the triangular rotor 300 and the end cover. The above-mentioned sealing member 320 has a simple structure, a reliable sealing can be achieved only by being provided on the rotor body 310, and the processing and assembly process is simple.

为了实现第一密封部321的两端分别与两个第二密封部322均无间隙配合，一种优选实施方式，每个端面密封面和每个径向密封面的两端均相交，在具体设置时，三个第一密封部321的两端分别与两个第二密封部322相交，此时三个第一密封部321和两个第二密封部322可以为一体式结构。In order to achieve a clearance-free fit between the two ends of the first sealing portion 321 and the two second sealing portions 322, a preferred embodiment is that each end face sealing surface and both ends of each radial sealing surface intersect. When installed, the two ends of the three first sealing parts 321 intersect with the two second sealing parts 322 respectively. At this time, the three first sealing parts 321 and the two second sealing parts 322 may be an integral structure.

上述三角转子泵中，每个端面密封面和每个径向密封面的两端均相交，以使得第一密封部321的两端分别与两个第二密封部322均无间隙配合，此时第一密封部321和第二密封部322始终相接触，在三角转子300的旋转过程中第一密封部321和第二密封部322之间没有间隙，进而使得径向密封面和端面密封面均为连续性的面，以保证径向密封和端面密封的连续性，从而使得三角转子泵的密封效果较好。In the above triangular rotor pump, both ends of each end face sealing surface and each radial sealing surface intersect, so that both ends of the first sealing portion 321 are respectively matched with the two second sealing portions 322 without clearance. The first sealing part 321 and the second sealing part 322 are always in contact. During the rotation of the triangular rotor 300, there is no gap between the first sealing part 321 and the second sealing part 322, so that the radial sealing surface and the end sealing surface are equal. It is a continuous surface to ensure the continuity of the radial seal and the end face seal, so that the triangular rotor pump has a better sealing effect.

在上述三角转子泵的基础上，如图2、图3以及图4所示，一种优选实施方式，第一密封部321包括凸出于顶端312的半圆柱形凸起323，该半圆柱形凸起323的周向外缘与侧壁100的内表面相抵接，同时该半圆形凸起323的长度方向与转子本体310的顶端312的厚度方向一致，其中，该半圆形凸起323的长度方向为平行于偏心轴410的轴向的方向，转子本体310的顶端312的厚度方向同样为平行于偏心轴410的轴向的方向。On the basis of the above triangular rotor pump, as shown in Figures 2, 3 and 4, in a preferred embodiment, the first sealing portion 321 includes a semi-cylindrical protrusion 323 protruding from the top end 312, the semi-cylindrical The outer periphery of the protrusion 323 abuts against the inner surface of the side wall 100, and the length direction of the semicircular protrusion 323 is consistent with the thickness direction of the top end 312 of the rotor body 310, wherein the semicircular protrusion 323 The length direction of is parallel to the axial direction of the eccentric shaft 410, and the thickness direction of the top end 312 of the rotor body 310 is also a direction parallel to the axial direction of the eccentric shaft 410.

上述三角转子泵中，通过限定半圆柱形凸起323的周向外缘与侧壁100的内表面相抵接，使得半圆柱形凸起323能够与侧壁100的内表面较好地接触，同时限定半圆形凸起323的长度方向与转子本体310的顶端312的厚度方向一致，以使得在顶端312的厚度方向上连续覆盖有半圆形凸起323，保证第一密封部321与顶端312径向密封的连续性，从而使得在转子本体310的任一转动过程中第一密封部321均抵接在侧壁100的内表面上，进而使得在整个工作过程中相邻封闭空间之间的缝隙始终为零，保证封闭空间内的压力，使得三角转子泵的径向密封效果较好。当然，第一密封部321并不局限于半圆形圆柱结构，还可以为其他结构形式，如方形柱，三个第一密封部321的结构形式可以相同，如三个第一密封部321均可以为半圆柱形凸起323，三个第一密封部321的结构形式也可以不同，如两个第一密封部321可以为半圆柱形凸起323，一个第一密封部321为方形柱，当然，三个第一密封部321的具体结构形式根据三角转子泵的实际情况进行确定。In the above triangular rotor pump, by defining the outer periphery of the semi-cylindrical protrusion 323 to abut against the inner surface of the side wall 100, the semi-cylindrical protrusion 323 can better contact the inner surface of the side wall 100, and at the same time The length direction of the defined semicircular protrusion 323 is consistent with the thickness direction of the top end 312 of the rotor body 310, so that the thickness direction of the top end 312 is continuously covered with the semicircular protrusion 323 to ensure that the first sealing portion 321 and the top end 312 are continuously covered. The continuity of the radial seal, so that the first sealing portion 321 abuts on the inner surface of the side wall 100 during any rotation of the rotor body 310, so that the gap between the adjacent enclosed spaces during the entire working process The gap is always zero to ensure the pressure in the enclosed space, so that the radial sealing effect of the triangular rotor pump is better. Of course, the first sealing portion 321 is not limited to a semicircular cylindrical structure, and can also be in other structural forms, such as a square column. The three first sealing portions 321 can have the same structure, for example, the three first sealing portions 321 have the same structure. It may be a semi-cylindrical protrusion 323, and the structure of the three first sealing parts 321 may also be different. For example, two first sealing parts 321 may be semi-cylindrical protrusions 323, and one first sealing part 321 is a square column. Of course, the specific structure of the three first sealing parts 321 is determined according to the actual situation of the triangular rotor pump.

具体地，如图1、图3以及图4所示，第一密封部321与侧壁100之间的压缩量为0.1mm-0.5mm，以使得在装配时，第一密封部321在装配时被压缩，第一密封部321的弹性形变提供了密封接触预压力，第一密封部321与侧壁100的内表面之间因第一密封部321的压缩变形产生持续的作用力，从而消除第一密封部321与侧壁100的内表面之间的缝隙，实现三角转子泵的径向密封。并且通过限定第一密封部321与侧壁100之间的压缩量为0.1mm-0.5mm以较好地实现第一密封部321与侧壁100的内表面之间的抵接作用，进而能够使得三角转子泵的径向密封较好。在具体设置时，第一密封部321与侧壁100之间的压缩量可以为0.1mm、0.2mm、0.3mm、0.4mm、0.5mm。第一密封部321与侧壁100之间的压缩量的具体数值根据第一密封部321的材质、应用场景以及侧壁100的实际情况进行确定。Specifically, as shown in FIGS. 1, 3, and 4, the compression between the first sealing portion 321 and the side wall 100 is 0.1mm-0.5mm, so that during assembly, the first sealing portion 321 is After being compressed, the elastic deformation of the first sealing portion 321 provides a sealing contact pre-pressure, and a continuous force is generated between the first sealing portion 321 and the inner surface of the side wall 100 due to the compression deformation of the first sealing portion 321, thereby eliminating the first sealing portion 321. A gap between the sealing portion 321 and the inner surface of the side wall 100 realizes the radial sealing of the triangular rotor pump. And by limiting the amount of compression between the first sealing portion 321 and the side wall 100 to be 0.1 mm-0.5 mm, the abutment between the first sealing portion 321 and the inner surface of the side wall 100 can be better realized, thereby enabling The radial seal of the triangular rotor pump is better. In the specific arrangement, the amount of compression between the first sealing portion 321 and the side wall 100 may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm. The specific value of the amount of compression between the first sealing portion 321 and the side wall 100 is determined according to the material of the first sealing portion 321, the application scenario, and the actual situation of the side wall 100.

具体地，半圆柱形凸起323的内部沿转子本体310的轴向方向分布有多个第一弹簧，每一第一弹簧的弹性方向垂直于侧壁100的内表面，该第一弹簧的设置一方面能够提高半圆柱形凸起323与侧壁100的密封接触作用，进而提高轴向密封效果，另一方面提供切换轴向密封接触的弹性力。在具体设置时，第一弹簧的数目可以为三个、四个、六个等，多个第一弹簧可以沿转子本体310的轴向方向分布，第一弹簧可以为波浪弹簧、压缩弹簧等结构形式，而第一弹簧的具体数目、结构形式可以根据第一密封部321的材质、应用场景以及侧壁100的实际情况进行确定。Specifically, a plurality of first springs are distributed inside the semi-cylindrical protrusion 323 along the axial direction of the rotor body 310, and the elastic direction of each first spring is perpendicular to the inner surface of the side wall 100. The arrangement of the first spring On the one hand, the sealing contact effect between the semi-cylindrical protrusion 323 and the side wall 100 can be improved, thereby improving the axial sealing effect, and on the other hand, it can provide elastic force for switching the axial sealing contact. In specific settings, the number of the first springs can be three, four, six, etc., multiple first springs can be distributed along the axial direction of the rotor body 310, and the first springs can be wave springs, compression springs, etc. The specific number and structure of the first springs can be determined according to the material of the first sealing portion 321, the application scenario, and the actual situation of the side wall 100.

如图4所示，一种优选实施方式，密封件320包括两组环状弹性件324，两组环状弹性件324分别设置在密封件320靠近第一端盖210和第二端盖220的两个边缘区域，并且每一弹性件324与相邻的第一端盖210或第二端盖220的内壁相抵接；每一组环状弹性件324包括三个首尾连接的弹性边325，弹性边325可以为第一表面313的六分之一、四分之一或是三分之一等，环状弹性件324的具体面积根据三角转子泵的实际情况进行确定。每一弹性边325设置在相邻两个第一密封部321之间，并且该弹性边325分别与相邻的两个第一密封部321相连接，每一弹性边325包括面对第一端盖210或第二端盖220的抵接面326，该抵接面326用于与第一端盖210和第二端盖220相抵接，以形成端面密封面。As shown in FIG. 4, in a preferred embodiment, the sealing member 320 includes two groups of ring-shaped elastic members 324, and the two groups of ring-shaped elastic members 324 are respectively disposed on the sealing member 320 near the first end cover 210 and the second end cover 220. Two edge regions, and each elastic member 324 abuts against the inner wall of the adjacent first end cover 210 or the second end cover 220; each group of ring-shaped elastic members 324 includes three end-to-end elastic edges 325, elastic The side 325 may be one-sixth, one-fourth, or one-third of the first surface 313, and the specific area of the ring-shaped elastic member 324 is determined according to the actual situation of the triangular rotor pump. Each elastic side 325 is arranged between two adjacent first sealing portions 321, and the elastic side 325 is respectively connected with two adjacent first sealing portions 321, and each elastic side 325 includes a first end facing The abutting surface 326 of the cover 210 or the second end cover 220 is used to abut the first end cover 210 and the second end cover 220 to form an end surface sealing surface.

上述技术方案中，环状弹性件324与第一端盖210或第二端盖220匹配，抵接面326在第一端盖210或第二端盖220的周向方向上连续设置，以保证端面密封的可靠性；而限定每一组环状弹性件324包括三个首尾连接的弹性边325，每一弹性边325包括面对第一端盖210或第二端盖220的抵接面326，以与第一端盖210或第二端盖220相互抵接，实现三角转子泵的端面密封。In the above technical solution, the ring-shaped elastic member 324 is matched with the first end cover 210 or the second end cover 220, and the contact surface 326 is continuously arranged in the circumferential direction of the first end cover 210 or the second end cover 220 to ensure The reliability of the end face seal; and each group of ring-shaped elastic members 324 is defined to include three elastic edges 325 connected end to end, and each elastic edge 325 includes an abutment surface 326 facing the first end cover 210 or the second end cover 220 , To abut against the first end cover 210 or the second end cover 220 to realize the sealing of the end face of the triangular rotor pump.

在具体设置时，抵接面326与相对应的第一端盖210或第二端盖220的内壁呈一定角度设置，并且该抵接面326远离侧面311的一端与相对应的第一端盖210或第二端盖220的内壁相抵接，以形成端面密封面，此时，该端面密封面为抵接面326远离侧面311的一端的端面，抵接面326除了远离侧面311的一端之外的部分起支撑作用，以为端面密封提供持续的作用力，使得三角转子泵的端面密封效果较好。抵接面326与相对应的第一端盖210或第二端盖220所成的一定角度可以为10°-30°，较佳地，设定角度为10°、15°、20°、25°、30°。In the specific arrangement, the abutting surface 326 is arranged at a certain angle with the inner wall of the corresponding first end cover 210 or the second end cover 220, and the end of the abutting surface 326 away from the side surface 311 is opposite to the corresponding first end cover. 210 or the inner wall of the second end cover 220 abut to form an end surface sealing surface. At this time, the end surface sealing surface is the end surface of the end of the abutting surface 326 away from the side surface 311. The abutting surface 326 except for the end away from the side surface 311 The part plays a supporting role to provide continuous force for the end face seal, making the end face sealing effect of the triangular rotor pump better. The certain angle formed by the abutting surface 326 and the corresponding first end cover 210 or the second end cover 220 may be 10°-30°, preferably, the set angle is 10°, 15°, 20°, 25° °, 30°.

每一弹性边325包括沿着弹性边325的延伸方向开设的沟槽327，每一沟槽327起始于一个第一密封部321并且终止于相邻的其中一个第一密封部321，而且该沟槽327的两端均至多延伸至部分第一密封部321上，三个沟槽327环绕转子本体310的轴向设置，并且相邻两个沟槽327之间不连通。Each elastic side 325 includes a groove 327 opened along the extending direction of the elastic side 325. Each groove 327 starts from a first sealing portion 321 and ends at one of the adjacent first sealing portions 321, and the Both ends of the groove 327 extend to a part of the first sealing portion 321 at most, the three grooves 327 are arranged around the axial direction of the rotor body 310, and two adjacent grooves 327 are not connected.

上述三角转子泵中，通过在弹性边325上设置沟槽327，一方面为第二密封部322提供了形变空间，另一方面还具有能够容纳流体以抵推弹性边325加强密封接触的效果，同时能够避免在径向密封和轴向密封共同作用处密封件320的拱起变形，提高密封效果；并且限定部分沟槽327延伸到第一密封部321上并且第一部分部321有一部分没有设置沟槽327，沟槽327的长度使得弹性边325与第一端盖210或第二端盖220的抵接作用较大，进而提高端面密封效果，同时使得第一密封部321和第二密封部322相交，进而使得端面密封面和每个径向密封面的两端均相交。并且在工作时流体进入沟槽327从而在流体压力的作用下将弹性边325更好地贴合在第一端盖210和第二端盖220上，以更进一步地提高端面密封效果。在具体设置时，环绕转子本体310的轴向设置的沟槽327并不局限于三个，还可以为多个间隔设置的弧形槽，并且这些弧形槽可以均匀设置在相邻的两个第一密封部321之间，还可以部分设置在第一密封部321上，但是位于第一密封部321上的弧形槽并不连通；并且设置在第一密封部321沿其延伸方向分布的两个边缘区域的两组沟槽327的个数、位置以及具体结构形式根据三角转子泵的实际情况确定。In the above-mentioned triangular rotor pump, by providing grooves 327 on the elastic side 325, on the one hand, a deformation space is provided for the second sealing portion 322, and on the other hand, it has the effect of being able to contain fluid to push the elastic side 325 to strengthen the sealing contact. At the same time, it can avoid the arching deformation of the seal 320 at the joint action of the radial seal and the axial seal, and improve the sealing effect; and the defined part of the groove 327 extends to the first sealing part 321 and a part of the first part 321 is not provided with grooves. The length of the groove 327 and the groove 327 make the elastic edge 325 have a greater abutment effect with the first end cover 210 or the second end cover 220, thereby improving the sealing effect of the end surface, and simultaneously making the first sealing portion 321 and the second sealing portion 322 Intersect, so that the end face sealing surface and both ends of each radial sealing surface intersect. In addition, the fluid enters the groove 327 during operation, so that the elastic edge 325 is better attached to the first end cover 210 and the second end cover 220 under the action of the fluid pressure, so as to further improve the sealing effect of the end face. In the specific arrangement, the grooves 327 arranged around the axial direction of the rotor body 310 are not limited to three, and may also be a plurality of arc-shaped grooves arranged at intervals, and these arc-shaped grooves may be evenly arranged in two adjacent ones. The first sealing parts 321 may also be partially arranged on the first sealing part 321, but the arc grooves on the first sealing part 321 are not connected; and the arc grooves arranged on the first sealing part 321 are distributed along the extending direction of the first sealing part 321. The number, position and specific structure of the two sets of grooves 327 in the two edge regions are determined according to the actual situation of the triangular rotor pump.

在具体设置时，沟槽327朝向第一端盖210和第二端盖220的侧壁相对于第一表面313成设定角度倾斜，设定角度可以为10°-30°，较佳地，设定角度为10°、15°、20°、25°、30°；而为了便于实现弹性边325与第一端盖210或第二端盖220的抵接作用，第二密封部322以及第一密封部321的压缩量为0.1mm-0.5mm。较佳地，该压缩量为0.1mm、0.2mm、0.3mm、0.4mm、0.5mm，而压缩量的具体数值根据第二密封部322以及第一密封部321的材质、应用场景以及侧壁100、端盖200的实际情况进行确定。In the specific arrangement, the side walls of the groove 327 facing the first end cover 210 and the second end cover 220 are inclined at a set angle with respect to the first surface 313, and the set angle can be 10°-30°, preferably, The set angles are 10°, 15°, 20°, 25°, 30°; and in order to facilitate the abutment between the elastic edge 325 and the first end cover 210 or the second end cover 220, the second sealing portion 322 and the The compression amount of a sealing portion 321 is 0.1 mm-0.5 mm. Preferably, the amount of compression is 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, and the specific value of the amount of compression is based on the materials, application scenarios, and sidewalls of the second sealing portion 322 and the first sealing portion 321. , The actual situation of the end cap 200 is determined.

值得注意的是，抵接面326可以为平面，也可以为弧形面，还可以为曲面，弹性边325背离沟槽327一侧的侧壁的厚度可以相同，也可以沿着朝向偏心轴410的方向逐渐增大。而在具体设置时，沟槽327的横截面可以为V字形，沿朝向偏心轴410的方向沟槽327的横截面面积逐渐减小，以在工作时流体进入沟槽327内形成楔形流体压力，在该楔形液体压力作用下能够将弹性边325较好地贴合在第一端盖210或第二端盖220上，进一步提高三角转子300的端面密封效果。当然，沟槽327的横截面并不局限于V字形，还可以为沿朝向偏心轴410的方向，横截面面积逐渐减小的其他形状，并且，沿朝向偏心轴410内部的方向，沟槽327的横截面面积逐渐减小的方式可以为阶梯状减小，也可以为其他减小方式。It is worth noting that the contact surface 326 can be a flat surface, an arc-shaped surface, or a curved surface. The thickness of the side wall of the elastic side 325 facing away from the groove 327 can be the same, or it can be along the eccentric axis 410. The direction gradually increases. In the specific setting, the cross section of the groove 327 may be V-shaped, and the cross-sectional area of the groove 327 is gradually reduced in the direction toward the eccentric shaft 410, so that the fluid enters the groove 327 to form a wedge-shaped fluid pressure during operation. Under the action of the wedge-shaped liquid pressure, the elastic edge 325 can be better attached to the first end cover 210 or the second end cover 220, which further improves the sealing effect of the end face of the triangular rotor 300. Of course, the cross-section of the groove 327 is not limited to the V-shape, and it may also have other shapes with a gradually decreasing cross-sectional area in the direction toward the eccentric shaft 410, and in the direction toward the inside of the eccentric shaft 410, the groove 327 The gradual reduction of the cross-sectional area can be a stepwise reduction, or other reduction methods.

每一第一密封部321上的相邻的沟槽327的末端之间具有预设距离，以保证同时获得径向密封效果和端面密封效果，而该预设距离大致位于第一密封部321的周向方向的中间位置，以便于沟槽327的开设；为了进一步提高三角转子泵的端面密封效果，具体地，该预设距离大于等于第一密封部321宽度的1/3，并且小于等于第一密封部321宽度的的1/2。There is a preset distance between the ends of the adjacent grooves 327 on each first sealing portion 321 to ensure that both the radial sealing effect and the end face sealing effect are obtained at the same time, and the preset distance is approximately located at the end of the first sealing portion 321. The intermediate position in the circumferential direction is convenient for opening the groove 327; in order to further improve the sealing effect of the end face of the triangular rotor pump, specifically, the preset distance is greater than or equal to 1/3 of the width of the first sealing portion 321, and less than or equal to the first sealing portion 321. A half of the width of the sealing portion 321.

上述三角转子泵中，通过设定预设距离在第一密封部321宽度的1/3到第一密封部321宽度的的1/2之间，以使得在保证径向密封的基础上获得较好的端面密封效果。在具体设置时，该预设距离可以为第一密封部321宽度的1/3、3/8、5/12、11/24，当然，该预设距离根据上述三角转子泵的实际情况进行确定。In the above-mentioned triangular rotor pump, the preset distance is set between 1/3 of the width of the first sealing portion 321 and 1/2 of the width of the first sealing portion 321, so as to obtain a better radial seal on the basis of ensuring radial sealing. Good sealing effect on the end face. In the specific setting, the preset distance can be 1/3, 3/8, 5/12, 11/24 of the width of the first sealing portion 321. Of course, the preset distance is determined according to the actual situation of the above triangular rotor pump .

具体地，沟槽327内设有第二弹簧，第二弹簧为波浪弹簧，波浪弹簧沿着沟槽327的长度方向布置，该第二弹簧一方面能够提高弹性边325与第一端盖210、第二端盖220的密封接触作用，进而提高端面密封效果，另一方面提供切换端面密封接触的弹性力。在具体设置时，第二弹簧的数目可以为三个、四个、六个等，第二弹簧可以为波浪弹簧、压缩弹簧等结构形式，而第二弹簧的具体数目、结构形式可以根据第二密封部321的材质、应用场景以及第一端盖210、第二端盖220的实际情况进行确定。Specifically, a second spring is provided in the groove 327. The second spring is a wave spring. The wave spring is arranged along the length of the groove 327. On the one hand, the second spring can improve the elastic edge 325 and the first end cover 210, The sealing contact effect of the second end cover 220 further improves the sealing effect of the end surface, and on the other hand, provides elastic force for switching the sealing contact of the end surface. In the specific setting, the number of the second spring can be three, four, six, etc., the second spring can be a wave spring, a compression spring, etc., and the specific number and structure of the second spring can be based on the second The material and application scenarios of the sealing portion 321 and the actual conditions of the first end cover 210 and the second end cover 220 are determined.

值得注意的是，两组环状弹性件324可以完全覆盖该第一表面313，也可以通过沟槽327的设置，如图3所示，仅保留沟槽327朝向第一端盖210和第二端盖220的侧壁，此时，为了提高端面密封效果，沟槽327朝向第一端盖210和第二端盖220的侧壁之间设置第二弹簧，第二弹簧在转子本体310的周向方向均匀设置，第二弹簧的数目可以为三个、四个、六个等，第二弹簧可以为波浪弹簧、压缩弹簧等结构形式，而第二弹簧的具体数目、结构形式可以根据第二密封部321的材质、应用场景以及第一端盖210、第二端盖220的实际情况进行确定。It is worth noting that the two ring-shaped elastic members 324 can completely cover the first surface 313, or can be provided with grooves 327. As shown in FIG. 3, only the grooves 327 are left facing the first end cover 210 and the second end cover 210. The side wall of the end cover 220. At this time, in order to improve the sealing effect of the end surface, a second spring is provided between the grooves 327 facing the side walls of the first end cover 210 and the second end cover 220, and the second spring is located on the circumference of the rotor body 310. The number of the second spring can be three, four, six, etc. The second spring can be a wave spring, a compression spring, etc., and the specific number and structure of the second spring can be based on the second spring. The material and application scenarios of the sealing portion 321 and the actual conditions of the first end cover 210 and the second end cover 220 are determined.

具体地，密封件320为一体式结构时，并且该密封件320包覆在转子本体310的外侧，在具体设置时，该密封件320与转子本体310一体成型。上述三角转子泵中，密封件320与转子本体310可以一次浇筑成型，通过限定密封件320与转子本体310一体成型，简化加工装配工艺，同时能够提高密封的可靠性。Specifically, when the sealing member 320 is an integrated structure, and the sealing member 320 is wrapped around the outer side of the rotor body 310, when specifically arranged, the sealing member 320 and the rotor body 310 are integrally formed. In the above-mentioned triangular rotor pump, the seal 320 and the rotor body 310 can be molded at one time. By limiting the seal 320 and the rotor body 310 to be integrally formed, the processing and assembly process is simplified, and the reliability of the seal can be improved.

当然，三角转子300的加工装配方式并不局限于上述形式，还可以为其他方式，例如，在转子本体310注塑成型后接着在转子本体310的外侧二次注塑成型该密封件320。再例如，分别制备转子本体310和密封件320，然后采用热压套入的方式将密封件320装配到转子本体310的外侧，此时，密封件320非转动地套设在转子本体310的外侧，在保证密封可靠性的基础上，能够避免在旋转时密封件320相对转子本体310发生滑移。Of course, the processing and assembling method of the triangular rotor 300 is not limited to the above-mentioned method, and other methods may also be used. For example, after injection molding of the rotor body 310, the sealing member 320 is second-injected on the outer side of the rotor body 310. For another example, the rotor body 310 and the sealing member 320 are prepared separately, and then the sealing member 320 is assembled to the outside of the rotor body 310 by means of thermo-compression fitting. At this time, the sealing member 320 is sleeved on the outside of the rotor body 310 in a non-rotating manner. On the basis of ensuring the reliability of the seal, it is possible to prevent the seal 320 from sliding relative to the rotor body 310 during rotation.

如图4所示，为了防止密封件320相对转子本体310发生滑移，一种优选实施方式，密封件320的内壁上设置有用于与第一表面313配合的第二表面3241，该第二表面3241可以由两组环状弹性件324朝向第一表面313的表面组成，第一表面313和第二表面3241配合使密封件320非转动地套设在转子本体310外侧，以防止旋转时密封件320相对转子本体310发生滑移。在具体设置时，第一表面313为平面时，第二表面3241为与所述第一表面313相配合的平面，第一表面313为弧形面时，第二表面3241为与所述第一表面313相配合的弧面。As shown in FIG. 4, in order to prevent the seal 320 from sliding relative to the rotor body 310, in a preferred embodiment, the inner wall of the seal 320 is provided with a second surface 3241 for mating with the first surface 313. The second surface 3241 can be composed of two groups of ring-shaped elastic members 324 facing the first surface 313. The first surface 313 and the second surface 3241 cooperate to make the seal 320 non-rotating sleeved outside the rotor body 310 to prevent the seal from rotating. 320 slips relative to the rotor body 310. In the specific setting, when the first surface 313 is a plane, the second surface 3241 is a plane that cooperates with the first surface 313, and when the first surface 313 is an arc-shaped surface, the second surface 3241 is the same as the first surface 313. Surface 313 is a matching arc.

具体地，第一表面313设有多个凹槽314，环状弹性件324靠近转子本体310的第二表面3241上设有多个与凹槽314互补的凸部328，凸部328与凹槽314相匹配，并且该凸部328容置于凹槽314内。Specifically, the first surface 313 is provided with a plurality of grooves 314, and the second surface 3241 of the annular elastic member 324 close to the rotor body 310 is provided with a plurality of protrusions 328 complementary to the grooves 314, the protrusions 328 and the grooves 314 matches, and the convex part 328 is received in the groove 314.

上述三角转子泵中，多个凹槽314均匀分布在三角转子300的外壁上，多个凹槽314和多个凸部328一一对应，凹槽314和凸部328相匹配，凹槽314为方形槽，凸部328为与该方形槽相匹配的方形柱，凸部328容置在凹槽314内部，以使得凸部328与转子本体310之间抵接配合，进而使得密封件320相对转子本体310非转动连接，能够保证密封件320和转子本体310之间的相对固定，防止密封件320及转子本体310在周向方向上移动，进而避免密封件320相对转子本体310发生滑移，从而保证密封件320对转子本体310的密封效果。In the above triangular rotor pump, a plurality of grooves 314 are evenly distributed on the outer wall of the triangular rotor 300, and the plurality of grooves 314 correspond to the plurality of convex portions 328 one-to-one. The grooves 314 and the convex portions 328 match, and the grooves 314 are The convex part 328 is a square column matching the square groove, and the convex part 328 is accommodated in the groove 314, so that the convex part 328 and the rotor body 310 abut against each other, so that the seal 320 is opposite to the rotor. The non-rotating connection of the body 310 can ensure the relative fixation between the seal 320 and the rotor body 310, prevent the seal 320 and the rotor body 310 from moving in the circumferential direction, thereby preventing the seal 320 from sliding relative to the rotor body 310, thereby The sealing effect of the seal 320 on the rotor body 310 is ensured.

在具体设置时，凸部328可以为半圆形圆柱结构，第一表面313的凹槽314为半圆形，但并不局限于此，还可以为其他结构形式，如方形柱。半圆形圆柱结构可以全部设置在半圆形的凹槽314内，也可以一部分设置在半圆形的凹槽314内。值得注意的是，凸部328的延伸方向可以平行于转子本体310的轴向方向，也可以与转子本体310的轴向方向成一定角度。In the specific arrangement, the convex portion 328 may have a semicircular cylindrical structure, and the groove 314 of the first surface 313 is semicircular, but it is not limited to this, and may also have other structural forms, such as a square column. The semi-circular cylindrical structure may be all arranged in the semi-circular groove 314, or part of it may be arranged in the semi-circular groove 314. It should be noted that the extending direction of the protrusion 328 may be parallel to the axial direction of the rotor body 310, or may form a certain angle with the axial direction of the rotor body 310.

为了防止密封件320及转子本体310在轴向方向上窜动，三角转子300还包括设置于密封件320和转子本体310之间的轴向限位结构，该轴向限位结构使密封件320在轴向方向相对转子本体310不可移动，以将密封件320紧贴在转子本体310上，防止三角转子300转动时密封件320在转子本体310的轴向方向上窜动。In order to prevent the seal 320 and the rotor body 310 from moving in the axial direction, the triangular rotor 300 also includes an axial limiting structure provided between the seal 320 and the rotor body 310, and the axial limiting structure makes the seal 320 It is immovable relative to the rotor body 310 in the axial direction, so that the seal 320 is tightly attached to the rotor body 310 to prevent the seal 320 from moving in the axial direction of the rotor body 310 when the triangular rotor 300 rotates.

该轴向限位结构的结构形式具有多种，如图2、图4以及图5所示，具体地，该轴向限位结构包括设置在转子本体310的周向方向的台阶结构315以及设置于密封件320上用于与台阶结构315相配合的嵌槽329，台阶结构315的外径小于转子本体310中心部分的外径，两个第二密封部322相互连接成为一体，并且两个第二密封部322之间形成有嵌槽329，此时两组环状弹性件324中位于同一第一表面313上的两个环状弹性件324为一体式结构，每一环状弹性件324与台阶结构315正对的部分具有与台阶结构315相配合的嵌槽329，台阶结构 315卡设于嵌槽329内，以限制密封件320相对转子本体310轴向移动。The axial limiting structure has a variety of structural forms, as shown in Figures 2, 4 and 5. Specifically, the axial limiting structure includes a step structure 315 provided in the circumferential direction of the rotor body 310 and a The embedding groove 329 on the sealing member 320 is used to cooperate with the step structure 315. The outer diameter of the step structure 315 is smaller than the outer diameter of the central part of the rotor body 310. The two second sealing parts 322 are connected with each other into one body, and the two second An embedding groove 329 is formed between the two sealing portions 322. At this time, the two annular elastic members 324 located on the same first surface 313 of the two annular elastic members 324 are an integral structure, and each annular elastic member 324 is connected to The portion facing the step structure 315 has an embedding groove 329 matching the step structure 315, and the step structure 315 is clamped in the embedding groove 329 to limit the axial movement of the seal 320 relative to the rotor body 310.

上述三角转子泵中，通过限定同一第一表面313上的环状弹性件324为一体式结构，并且该一体式结构覆盖转子本体310，并且同时通过限定转子本体310的边缘区域具有台阶结构315，并在环状弹性件324上设置与该台阶结构315相配合的嵌槽329，以将密封件320紧贴在转子本体310上，而且台阶结构315的外径小于转子本体310中心部分的外径，台阶结构315与嵌槽329相配合能够防止其在轴向方向上窜动，保证密封件320和转子本体310之间的相对固定，进一步提高密封件320的密封效果。在具体设置时，第一表面313上沿转子本体310的轴向方向的两端边缘区域的两组台阶结构315可以对称设置，并且，如图5所述，台阶结构315的设置使得顶端312包括两部分，这两部分在转子本体310周向的位置相同，并且位于台阶结构315区域的顶端312的外径小于沿转子本体310的轴向方向的中间位置的顶端312的外径，此时，与位于台阶结构315区域的顶端312相对应的第一密封部321的内径小于与沿转子本体310的轴向方向的中间位置的顶端312的内径，以使得与这两部分的顶端312相对应的第一密封部321的外径相同，从而保证三角转子泵的径向密封效果。In the above triangular rotor pump, the annular elastic member 324 on the same first surface 313 is defined as an integral structure, and the integral structure covers the rotor body 310, and at the same time, the edge region of the rotor body 310 is defined to have a step structure 315, A groove 329 matching the step structure 315 is provided on the annular elastic member 324 to tightly abut the sealing member 320 on the rotor body 310, and the outer diameter of the step structure 315 is smaller than the outer diameter of the central part of the rotor body 310 The cooperation of the step structure 315 with the insert groove 329 can prevent it from moving in the axial direction, ensure the relative fixation between the seal 320 and the rotor body 310, and further improve the sealing effect of the seal 320. In the specific arrangement, the two sets of stepped structures 315 on the first surface 313 along the two end edge regions of the rotor body 310 in the axial direction can be symmetrically arranged, and, as shown in FIG. 5, the stepped structures 315 are arranged such that the top end 312 includes Two parts, the positions of the two parts in the circumferential direction of the rotor body 310 are the same, and the outer diameter of the top end 312 in the region of the step structure 315 is smaller than the outer diameter of the top end 312 in the middle position along the axial direction of the rotor body 310. At this time, The inner diameter of the first sealing portion 321 corresponding to the top end 312 located in the region of the step structure 315 is smaller than the inner diameter of the top end 312 at the middle position along the axial direction of the rotor body 310, so that the inner diameter of the first sealing portion 321 corresponds to the top end 312 of the two parts. The outer diameter of the first sealing portion 321 is the same, so as to ensure the radial sealing effect of the triangular rotor pump.

端盖200的结构形式具有多种，除了分别设置两个与侧壁相连的第一端盖210和第二端盖220之外，一种优选实施方式，侧壁100与第一端盖210或第二端盖220一体成型。The end cap 200 has a variety of structural forms. In addition to the two first end caps 210 and the second end cap 220 connected to the side walls, a preferred embodiment is that the side wall 100 and the first end cap 210 or The second end cover 220 is integrally formed.

上述三角转子泵中，侧壁100与第一端盖210一体成型后，在装配时只需将第二端盖220固定在侧壁100上，减少了装配工序，同样，侧壁100与第二端盖220一体成型后，在装配时只需将第一端盖210固定在侧壁100上，减少了装配工序，因此，通过侧壁100与第一端盖210或第二端盖220一体成型，简化了加工装配工艺，提高了生产效率。In the above triangular rotor pump, after the side wall 100 and the first end cover 210 are integrally formed, the second end cover 220 only needs to be fixed on the side wall 100 during assembly, which reduces the assembly process. Similarly, the side wall 100 and the second end cover 210 After the end cover 220 is integrally formed, only the first end cover 210 needs to be fixed on the side wall 100 during assembly, which reduces the assembly process. Therefore, the side wall 100 is integrally formed with the first end cover 210 or the second end cover 220 , Which simplifies the processing and assembly process and improves the production efficiency.

一种优选实施方式，密封件320可以为聚氨酯件或橡胶件。In a preferred embodiment, the sealing member 320 may be a polyurethane member or a rubber member.

上述三角转子泵中，由于聚氨酯具有耐油，耐磨，耐低温，耐老化，硬度高，良好的弹性等优点，橡胶是一种具有可逆形变的高弹性聚合物材料，在室温下富有弹性，在很小的外力作用下能产生较大形变，除去外力后能恢复原状的弹性材料，采用聚氨酯或橡胶制备的密封件320的弹性性能较好，以提高抵接时密封件320与侧壁100的内表面、第一端盖210以及第二端盖220之间的作用力，能够较好地实现三角转子泵的密封，较佳地，可以使用自润滑聚氨酯材料制备密封件320，以进一步提高密封件320与侧壁100的内表面、第一端盖210以及第二端盖220之间的接触密封效果。当然制备密封件320的弹性材料并不局限于聚氨酯或橡胶，还可以为其他能够满足要求的材料。In the above triangular rotor pump, because polyurethane has the advantages of oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness, good elasticity, etc., rubber is a highly elastic polymer material with reversible deformation, which is elastic at room temperature. The elastic material that can produce large deformation under the action of a small external force and can return to its original shape after the external force is removed. The sealing member 320 made of polyurethane or rubber has better elastic performance to improve the contact between the sealing member 320 and the side wall 100 when abutting. The force between the inner surface, the first end cover 210 and the second end cover 220 can better achieve the sealing of the triangular rotor pump. Preferably, the seal 320 can be made of self-lubricating polyurethane material to further improve the sealing The contact sealing effect between the member 320 and the inner surface of the side wall 100, the first end cover 210 and the second end cover 220. Of course, the elastic material for preparing the sealing member 320 is not limited to polyurethane or rubber, and may also be other materials that can meet the requirements.

以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。The above-mentioned embodiments only express several implementation modes of the present invention, and their description is relatively specific and detailed, but they should not be understood as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

一种三角转子泵，包括壳体，所述壳体包括侧壁以及分别设置于所述侧壁两端的第一端盖和第二端盖，还包括设置在所述壳体内的三角转子以及驱动所述三角转子的偏心组件，所述三角转子与所述壳体之间形成三个工作腔，所述三角转子能够被驱动的交替压缩和释放所述工作腔；A triangular rotor pump includes a housing, the housing includes a side wall, a first end cover and a second end cover respectively arranged at both ends of the side wall, and further includes a triangular rotor and a drive provided in the housing For the eccentric component of the triangular rotor, three working chambers are formed between the triangular rotor and the housing, and the triangular rotor can be driven to alternately compress and release the working chambers;

其特征在于，所述三角转子包括转子本体以及设置于所述转子本体的密封件，所述密封件为弹性结构件，所述转子本体包括三个顶端和分别面对所述第一端盖和所述第二端盖的侧面，其中：It is characterized in that the triangular rotor includes a rotor body and a sealing element arranged on the rotor body, the sealing element is an elastic structural element, and the rotor body includes three top ends and facing the first end cover and The side surface of the second end cover, wherein:

所述密封件包括三个分别设置于三个所述顶端的第一密封部，每个所述第一密封部与所述侧壁的内表面相抵接，以形成阻隔相邻所述工作腔的径向密封面；所述密封件还包括第二密封部，所述第二密封部的数量为两个，两个所述第二密封部分别设置于所述转子本体轴向方向的两端，所述第二密封部分别与所述第一端盖和第二端盖相抵接形成端面密封面；所述第一密封部的两端分别与两个所述第二密封部均无间隙配合；The sealing element includes three first sealing parts respectively arranged on the three top ends, and each of the first sealing parts abuts against the inner surface of the side wall to form a barrier that blocks the adjacent working chambers. A radial sealing surface; the seal further includes a second sealing portion, the number of the second sealing portion is two, and the two second sealing portions are respectively provided at both ends of the rotor body in the axial direction, The second sealing part abuts against the first end cover and the second end cover to form an end face sealing surface; both ends of the first sealing part are respectively matched with the two second sealing parts without clearance;

所述第一密封部包括凸出于所述顶端的半圆柱形凸起，所述半圆柱形凸起的长度方向与所述转子本体的所述顶端的厚度方向一致，且所述半圆柱形凸起的周向外缘与所述侧壁的内表面相抵接；The first sealing portion includes a semi-cylindrical protrusion protruding from the top end, the length direction of the semi-cylindrical protrusion is consistent with the thickness direction of the top end of the rotor body, and the semi-cylindrical protrusion The outer periphery of the protrusion abuts against the inner surface of the side wall;

所述第二密封部包括两组环状弹性件，所述两组环状弹性件分别设置在所述密封件靠近所述第一端盖和所述第二端盖的两个边缘区域，且每一所述环状弹性件与相邻的所述第一端盖或所述第二端盖的内壁相抵接；The second sealing portion includes two sets of ring-shaped elastic members, and the two sets of ring-shaped elastic members are respectively disposed at two edge regions of the sealing member close to the first end cover and the second end cover, and Each of the ring-shaped elastic members abuts against the inner wall of the adjacent first end cover or the second end cover;

每一组环状弹性件包括三个首尾连接的弹性边，每一所述弹性边设置在相邻两个所述第一密封部之间、且分别与相邻的两个所述第一密封部相连接，每一所述弹性边包括面对所述第一端盖或所述第二端盖的抵接面，所述抵接面用于与所述第一端盖和所述第二端盖相抵接，以形成所述端面密封面；Each group of ring-shaped elastic members includes three elastic edges connected end to end, and each of the elastic edges is arranged between two adjacent first sealing parts and is respectively sealed with two adjacent first sealing parts. Each of the elastic edges includes an abutting surface facing the first end cover or the second end cover, and the abutting surface is used for contacting the first end cover and the second end cover. The end caps abut to form the end face sealing surface;

所述抵接面与相对应的所述第一端盖或所述第二端盖的内壁呈预设角度设置，且所述抵接面远离所述侧面的一端与相对应的所述第一端盖或所述第二端盖的内壁相抵接；The abutting surface and the inner wall of the corresponding first end cover or the second end cover are arranged at a preset angle, and the end of the abutting surface away from the side surface is opposite to the corresponding first end cover. The inner wall of the end cover or the second end cover abuts;

每一所述弹性边包括沿着所述弹性边的延伸方向开设的沟槽，每一所述沟槽起始于一个所述第一密封部且终止于相邻的其中一个所述第一密封部、且所述沟槽的两端均至少部分延伸至所述第一密封部上，三个所述沟槽环绕所述转子本体的周向设置、且相邻两个所述沟槽之间不连通。Each of the elastic edges includes grooves opened along the extension direction of the elastic edges, and each of the grooves starts from one of the first sealing portions and ends at one of the adjacent first seals Both ends of the groove at least partially extend to the first sealing portion, and the three grooves are arranged around the circumference of the rotor body and are located between two adjacent grooves. Not connected.
根据权利要求1所述三角转子泵，其特征在于，所述半圆柱形凸起的内部沿所述转子本体的轴向方向分布有第一弹簧，所述第一弹簧的弹性方向垂直于所述侧壁的内表面。The triangular rotor pump according to claim 1, wherein a first spring is distributed in the interior of the semi-cylindrical protrusion along the axial direction of the rotor body, and the elastic direction of the first spring is perpendicular to the The inner surface of the side wall.
根据权利要求1所述的三角转子泵，其特征在于，每一所述第一密封部上的相邻的所述沟槽的末端之间具有预设距离，所述预设距离大致位于所述第一密封部的周向方向的中间位置。The triangular rotor pump according to claim 1, wherein there is a preset distance between the ends of the adjacent grooves on each of the first sealing portions, and the preset distance is approximately located in the The middle position of the first seal portion in the circumferential direction.
根据权利要求3所述的三角转子泵，其特征在于，所述预设距离大于等于所述第一密封部宽度的1/3，且小于等于所述第一密封部宽度的1/2。The triangular rotor pump according to claim 3, wherein the predetermined distance is greater than or equal to 1/3 of the width of the first sealing portion, and less than or equal to 1/2 of the width of the first sealing portion.
根据权利要求1所述的三角转子泵，其特征在于，所述沟槽内设有第二弹簧，所述第二弹簧为波浪弹簧，所述波浪弹簧沿着所述沟槽的长度方向布置。The triangular rotor pump according to claim 1, wherein a second spring is provided in the groove, and the second spring is a wave spring, and the wave spring is arranged along the length direction of the groove.
根据权利要求1所述的三角转子泵，其特征在于，所述密封件为一体式结构、且包覆在所述转子本体的外侧。The triangular rotor pump according to claim 1, wherein the seal is an integral structure and is covered on the outer side of the rotor body.
根据权利要求1所述的三角转子泵，其特征在于，所述密封件非转动地套设在所述转子本体外侧。The triangular rotor pump according to claim 1, wherein the sealing member is non-rotatably sleeved on the outer side of the rotor body.
根据权利要求7所述的三角转子泵，其特征在于，所述转子本体还包括周向方向上面向所述侧壁的内表面的第一表面，所述密封件的内壁上设置有用于与所述第一表面配合的第二表面，所述第一表面和所述第二表面配合使所述密封件非转动地套设在所述转子本体外侧。The triangular rotor pump according to claim 7, wherein the rotor body further comprises a first surface facing the inner surface of the side wall in the circumferential direction, and the inner wall of the sealing member is provided with The first surface is matched with a second surface, and the first surface and the second surface are matched to make the seal non-rotating sleeved on the outside of the rotor body.
根据权利要求8所述的三角转子泵，其特征在于，所述第一表面上设有多个凹槽，所述密封件的所述第二表面上设置有多个与所述凹槽互补的凸部，所述凸部与与所述凹槽相匹配、且容置于所述凹槽内使所述密封件相对所述转子本体非转动连接。The triangular rotor pump according to claim 8, wherein the first surface is provided with a plurality of grooves, and the second surface of the sealing member is provided with a plurality of complementary grooves. A convex part, the convex part matches with the groove and is accommodated in the groove so that the sealing element is non-rotatably connected with the rotor body.
根据权利要求7所述的三角转子泵，其特征在于，所述三角转子还包括设置于所述密封件和所述转子本体之间的轴向限位结构，所述轴向限位结构使所述密封件在轴向方向相对所述转子本体不可移动。The triangular rotor pump according to claim 7, wherein the triangular rotor further comprises an axial limiting structure provided between the seal and the rotor body, and the axial limiting structure makes the The seal is not movable relative to the rotor body in the axial direction.
根据权利要求10所述的三角转子泵，其特征在于，所述轴向限位结构包括设置于所述转子本体周向的台阶结构以及设置于所述密封件上用于与所述台阶结构配合的嵌槽，两个所述第二密封部相互连接成一体，且两个所述第二密封部之间形成有与所述台阶结构配合的所述嵌槽，所述密封件套设于所述转子本体上时，所述台阶结构卡设于所述嵌槽内，以限制所述密封件相对所述转子本体轴向移动。The triangular rotor pump according to claim 10, wherein the axial limiting structure comprises a step structure provided in the circumferential direction of the rotor body and a step structure provided on the sealing member for cooperating with the step structure The embedding groove, the two second sealing portions are connected to each other into one body, and the embedding groove that cooperates with the step structure is formed between the two second sealing portions, and the sealing member is sleeved on the When the rotor body is on the rotor body, the step structure is clamped in the embedding groove to restrict the axial movement of the sealing member relative to the rotor body.
根据权利要求1所述的三角转子泵，其特征在于，所述密封件弹性材料为聚氨酯件或橡胶件。The triangular rotor pump according to claim 1, wherein the elastic material of the sealing member is a polyurethane member or a rubber member.
根据权利要求1所述的三角转子泵，其特征在于，每个所述端面密封面和每个所述径向密封面的两端均相交。The triangular rotor pump according to claim 1, wherein both ends of each of the end face sealing surfaces and each of the radial sealing surfaces intersect.