A wear-resistant elastic composite rotor and its elastic body production mold

Abstract

The invention discloses an end-face wear-resistant elastic composite rotor pump and an elastomer production mold thereof, comprising a cam rotor pump, a supporting frame, an elastomer, a special-shaped end face, a base, an upper seat and a middle seat, wherein an elastomer rotor is arranged in a cavity of the cam rotor pump, a plurality of frame blades are arranged on the supporting frame, frame grooves are arranged on the end faces at both ends of the supporting frame, an elastomer is arranged on the outer side of the supporting frame, concave notches are arranged on the end faces at both ends of the elastomer, and special-shaped end face rings are embedded in the concave notches; a positioning column and a lower star-shaped boss are arranged on the base, and a plurality of lower through holes are penetrated through the base; an upper star-shaped boss is arranged on one side of the upper seat, and an injection hole and an upper through hole are opened on the upper seat; a forming cavity is arranged in the middle of the middle seat; the upper seat, the middle seat and the base are fixed and positioned by passing a fixing screw through the upper through hole, the middle through hole and the lower through hole in sequence; the invention has a simple structure, is convenient for maintenance, has a good metal powder transportation effect, is easy to produce and manufacture, and can be widely promoted and applied.

Description

Technical Field

[0001] The present invention relates to the technical field of elastomeric rotors, in particular to the technical field of wear-resistant elastomeric rotors. Background Art

[0002] When conveying ceramic powder, since ceramic powder has a high solid content and is a highly abrasive medium, the metal is easily stuck in the pump body when the volumetric pump is usually used for transportation. There are also elastic cam rotor pumps for transportation. Metal particles are easy to scratch the elastomer, and the end edge scratches are the most serious. The radial surface scratches of the elastomer body have little effect on the transportation of ceramic powder, but the end edge scratches often cause the elastomer to tear, and the metal secretions come into contact with the metal parts of the inner cavity of the pump body, affecting the life of the pump body. It is also easy to get stuck in the pump body. In the face of such a situation, it is necessary to design and improve the cam rotor pump. In order to facilitate the mass production of the improved elastomer rotor, it is also necessary to design the injection mold. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the prior art and to propose an end-face wear-resistant elastic composite rotor and an elastomer production mold thereof, which can achieve good metal powder transportation effect of the elastomer rotor, good rotor wear resistance, convenient maintenance, quick and convenient elastomer production, and low cost.

[0004] To achieve the above-mentioned purpose, the present invention proposes an end-face wear-resistant elastic composite rotor, comprising a cam rotor pump, an elastomeric rotor, a support frame, an elastomer and a special-shaped end face ring, wherein the cavity of the cam rotor pump is provided with an elastomeric rotor, the elastomeric rotor comprises a support frame, an elastomer, a special-shaped end face ring, a support ring and a dynamic ring seat hole, the support frame is provided with a plurality of frame blades, the end faces at both ends of the support frame are provided with frame grooves, the outer side of the support frame is provided with an elastomer, the end faces at both ends of the elastomer are provided with concave notches, and the special-shaped end face rings are embedded in the concave notches;

[0005] The thickness of the rubber side wall of the elastic body is at least 4 mm, and the thickness of the rubber inner wall of the elastic body is at least 3 mm; a dynamic ring seat hole is opened on one side of the support frame, and a rubber convex ring is arranged on the inner ring of one end of the elastic body;

[0006] The special-shaped end face ring is composed of a ring body and an outward-extending blade. The outward-extending blade is evenly arranged on the outer periphery of the ring body. A plurality of drainage grooves are provided on the side walls of the ring body and the outward-extending blade. A plurality of compensation grooves are provided on one side of the ring body and the outward-extending blade. The compensation grooves and the drainage grooves are interconnected. A large chamfer is provided at the connection between the ring body and the outward-extending blade. A small chamfer is provided on the outer periphery of one end face of the ring body and the outward-extending blade. The radius of the large chamfer is 3-5 mm, and the radius of the small chamfer is 1-2 mm.

[0007] The top of the extended blade is at least 0.1 mm longer than the top of the skeleton blade, the width of the extended blade is 3-5 mm, and the depth h of the special-shaped end face ring embedded in the inner wall of the rubber is 5-15 mm.

[0008] The cam is provided with a plurality of lower through holes, and the upper star-shaped boss is provided on one side of the upper seat, and an injection molding hole and an upper through hole are provided on the upper seat, and an injection molding groove is provided on the other side of the upper seat, and the injection molding groove and the injection molding hole are connected with each other; a forming cavity is provided in the middle part of the middle seat, and a middle through hole is also provided on the middle seat around the forming cavity; one side of the base is in contact with one side of the middle seat, and the positioning column passes through the forming cavity, and the other side of the middle seat is covered with an upper seat, and the upper seat, the middle seat and the base are fixed and positioned by passing the fixing screw through the upper through hole, the middle through hole and the lower through hole in sequence; a support ring is also provided between the lower star-shaped boss of the base and the positioning column.

[0009] Preferably, the radius of the cross-section circle of the rubber convex ring is 0.5-1 mm, and the distance between the center of the cross-section circle of the rubber convex ring and the side wall of the supporting frame is 0.5-1 mm.

[0010] Preferably, the number of skeleton blades of the supporting skeleton is at least 3, and the number of the skeleton blades is equal to the number of the extending blades.

[0011] Preferably, the number and positions of the upper through holes, the middle through holes and the lower through holes correspond one to one; the shape of the forming cavity is the same as that of the elastomer; and the lower star-shaped boss and the upper star-shaped boss are located in the forming cavity.

[0012] Beneficial effects of the present invention: the present invention provides special-shaped end face rings at both ends of the elastomer rotor, and a plurality of drainage grooves and compensation grooves are opened on the side walls of the ring body and the protruding blades. The compensation grooves are connected to the drainage grooves, and the transported ceramic powder can enter the compensation grooves through the drainage grooves, so that the special-shaped end face rings float left and right, thereby ensuring smooth transportation of the ceramic powder without jamming. At the same time, the degree of scratching on the edge of the elastomer end face is greatly reduced, thereby extending the service life of the elastomer rotor. The special-shaped end face ring is a separate component, which is easy to replace and has good maintenance effect. The elastomer production mold is provided with a base, a middle seat and an upper seat. By injecting the molten plastic into the injection molding groove, the elastomer can be quickly formed in the forming cavity through the injection molding hole, which is convenient for elastomer production and low in cost. The present invention has a simple structure, is easy to maintain, has a good metal powder transportation effect, and is easy to produce and manufacture elastomers, and can be widely promoted and applied.

[0013] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a partial cross-sectional view of a front view of an end-face wear-resistant elastic composite rotor pump of the present invention;

[0015] Figure 2 It is a front cross-sectional view of an elastic body rotor of an end surface wear-resistant elastic composite rotor of the present invention;

[0016] Figure 3 It is a side cross-sectional view of an elastic body rotor of an end surface wear-resistant elastic composite rotor of the present invention;

[0017] Figure 4 It is a partial schematic side view of the cross section of an elastic body rotor of an end surface wear-resistant elastic composite rotor of the present invention;

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of a support frame of an end-face wear-resistant elastic composite rotor of the present invention;

[0019] Figure 6 It is a schematic diagram of the three-dimensional structure of an elastic body rotor of an end surface wear-resistant elastic composite rotor of the present invention;

[0020] Figure 7 It is a schematic diagram of the three-dimensional structure of a special-shaped end face ring of an end face wear-resistant elastic composite rotor of the present invention;

[0021] Figure 8 It is a front cross-sectional view of an elastic body production mold of an end-face wear-resistant elastic composite rotor of the present invention;

[0022] Fig. 9 It is a schematic diagram of the three-dimensional structure of the base of an elastic body production mold of an end surface wear-resistant elastic composite rotor of the present invention;

[0023] Fig.10 It is a schematic diagram of the three-dimensional structure of the middle seat of an elastic body production mold of an end surface wear-resistant elastic composite rotor of the present invention;

[0024] Fig.11 It is a schematic diagram of the three-dimensional structure of the upper seat of an elastic body production mold of an end surface wear-resistant elastic composite rotor of the present invention;

[0025] Fig.12 It is a three-dimensional structural schematic diagram of an elastomer production mold for an end-face wear-resistant elastic composite rotor of the present invention.

[0026] In the figure: 1-cam rotor pump, 2-elastomeric rotor, 3-support skeleton, 31-skeleton blade, 32-skeleton groove, 4-elastomer, 41-rubber side wall, 42-rubber inner wall, 43-rubber convex ring, 44-concave, 5-special-shaped end face ring, 51-ring body, 52-extending blade, 53-drainage groove, 54-compensation groove, 55-large chamfer, 56-small chamfer, 6-first support ring, 7-moving ring seat hole, 8-base, 81-positioning column, 82-lower star-shaped boss, 83-lower through hole, 9-upper seat, 91-upper star-shaped boss, 92-injection hole, 93-upper through hole, 94-injection groove, 10-middle seat, 101-middle through hole, 102-forming cavity, 11-second support ring, 12-fixing screw. DETAILED DESCRIPTION

[0027] See also Figure 1-Figure 12 The present invention discloses an elastomeric rotor of an end-face wear-resistant elastic composite rotor, comprising a cam rotor pump 1, an elastomeric rotor 2, a support skeleton 3, an elastomer 4 and a special-shaped end face ring 5. The cam rotor pump 1 is provided with an elastomeric rotor 2 in a cavity, and the elastomeric rotor 2 comprises a support skeleton 3, an elastomer 4, a special-shaped end face ring 5, a first support ring 6 and a dynamic ring seat hole 7. The support skeleton 3 is provided with a plurality of skeleton blades 31, and skeleton grooves 32 are provided at both end faces of the support skeleton 3. The outer side of the support skeleton 3 is provided with an elastomer 4, and both end faces of the elastomer 4 are provided with concave notches 44, and the special-shaped end face ring 5 is embedded in the concave notches 44.

[0028] The thickness of the rubber side wall 41 of the elastic body 4 is at least 4 mm, and the thickness of the rubber inner wall 42 of the elastic body 4 is at least 3 mm; a dynamic ring seat hole 7 is opened on one side of the support frame 3, and a rubber convex ring 43 is provided on the inner ring of one end of the elastic body 4;

[0029] The special-shaped end face ring 5 is composed of a ring body 51 and an outward-extending blade 52. The outward-extending blade 52 is evenly arranged on the outer periphery of the ring body 51. A plurality of drainage grooves 53 are provided on the side walls of the ring body 51 and the outward-extending blade 52. A plurality of compensation grooves 54 are provided on one side of the ring body 51 and the outward-extending blade 52. The compensation grooves 54 are connected with the drainage grooves 53. A large chamfer 55 is provided at the connection between the ring body 51 and the outward-extending blade 52. A small chamfer 56 is provided on the outer periphery of one end face of the ring body 51 and the outward-extending blade 52. The radius of the large chamfer 55 is 3-5 mm, and the radius of the small chamfer 56 is 1-2 mm.

[0030] The top of the outwardly extending blade 52 is at least 0.1 mm longer than the top of the skeleton blade 31, the width of the outwardly extending blade 52 is 3-5 mm, and the depth h of the profiled end face ring 5 embedded in the rubber inner side wall 42 is 5-15 mm;

[0031] An elastomer production mold for an end-face wear-resistant elastic composite rotor, comprising a base 8, an upper base 9, a middle base 10, a second support ring 11 and a fixing screw 12, wherein the base 8 is provided with a positioning column 81 and a lower star-shaped boss 82, the positioning column 81 is located in the center of the lower star-shaped boss 82, and the base 8 is penetrated with a plurality of lower through holes 83; an upper star-shaped boss 91 is provided on one side of the upper base 9, an injection hole 92 and an upper through hole 93 are opened on the upper base 9, and an injection groove 94 is provided on the other side of the upper base 9, and the injection groove 94 is connected with the injection hole 92 ; A forming cavity 102 is provided in the middle of the middle seat 10, and a middle through hole 101 is also provided on the middle seat 10 around the forming cavity 102; one side of the base 8 is in contact with one side of the middle seat 10, and the positioning column 81 passes through the forming cavity 102, and the other side of the middle seat 10 is covered with an upper seat 9, and the upper seat 9, the middle seat 10 and the base 8 are fixed and positioned by a fixing screw 12 that passes through the upper through hole 93, the middle through hole 101 and the lower through hole 83 in sequence; a second support ring 11 is also provided between the lower star-shaped boss 82 of the base 8 and the positioning column 81;

[0032] The cross-sectional radius of the rubber convex ring 43 is 0.5-1 mm, and the distance between the cross-sectional center of the rubber convex ring 43 and the side wall of the support frame 3 is 0.5-1 mm;

[0033] The number of the skeleton blades 31 of the support skeleton 3 is at least 3, and the number of the skeleton blades 31 and the number of the outwardly extending blades 52 are correspondingly equal;

[0034] The number and position of the upper through holes 93 , the middle through holes 101 and the lower through holes 83 correspond one to one; the shape of the forming cavity 102 is the same as that of the elastomer 4 ; the lower star-shaped boss 82 and the upper star-shaped boss 91 are located in the forming cavity 102 .

[0035] Working process of the present invention:

[0036] In the working process of the end-face wear-resistant elastic composite rotor and its elastomer production mold of the present invention, the upper seat 9, the middle seat 10 and the base 8 are first fixed and positioned by passing the fixing screw 12 through the upper through hole 93, the middle through hole 101 and the lower through hole 83 in sequence, the support frame 3 is inserted into the forming cavity 102, the keyway of the first support ring 6 of the support frame 3 and the positioning column 81 cooperate with each other for positioning, the melted plastic is injected into the injection groove 94, and then the plastic in the injection groove 94 flows into the injection hole 92 to fill the space reserved for the forming cavity 102, thereby forming the elastomer rotor 2, which is then installed in the cam rotor pump 1, and the elastomer rotor Special-shaped end face rings 5 ​​are installed on the two end faces of the rotor 2, and the mutually meshing elastomer rotors 2 transport ceramic powders and the like. Due to the negative pressure formed in the compensation groove 54 during rotation, the ceramic powder on the end face enters the compensation groove 54 through the drainage groove 53. The ceramic powder in the compensation groove 54 generates pressure to push the special-shaped end face ring 5 to slide in the axial direction, thereby preventing the ceramic powder from being stuck between the special-shaped end face ring 5 and the side wall of the inner cavity where the elastomer rotor 2 is installed. At the same time, it can reduce the risk of ceramic powder scratching the edge of the end face of the elastomer 4, thereby ensuring the smooth transportation of materials with high solid content such as ceramic powder. When the elastomer 4 and the special-shaped end face ring 5 are damaged, they can be replaced, which is very convenient to use.

[0037] The present invention provides special-shaped end face rings 5 ​​at both ends of the elastomer rotor 2, and a plurality of drainage grooves 53 and compensation grooves 54 are opened on the side walls of the ring body 51 and the extended blades 52. The compensation grooves 54 are connected with the drainage grooves 53, and the transported ceramic powder can enter the compensation grooves 54 through the drainage grooves 53, so that the special-shaped end face rings 5 ​​float left and right, thereby ensuring smooth transportation of the ceramic powder without jamming. At the same time, the degree of scratching of the edge of the end face of the elastomer 4 is greatly reduced, and the service life of the elastomer rotor 2 is extended. The special-shaped end face rings 5 ​​are separate components, which are easy to replace and have good maintenance effects. The elastomer 4 production mold is provided with a base 8, a middle seat 10 and an upper seat 9. By injecting the molten plastic into the injection groove 94, the elastomer 4 can be quickly formed in the forming cavity 102 through the injection hole 92, which is convenient for the production of the elastomer 4 and low in cost. The present invention has a simple structure, is easy to maintain, has a good metal powder transportation effect, and is easy to produce and manufacture elastomers, and can be widely promoted and applied.

[0038] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. An end surface wear-resistant elastic composite rotor, characterized in that: The invention comprises an elastomeric rotor (2), wherein the elastomeric rotor (2) is arranged in a cavity of a cam rotor pump (1). The elastomeric rotor (2) comprises a support frame (3), an elastomer (4), a special-shaped end face ring (5), a first support ring (6) and a movable ring seat hole (7); the support frame (3) is provided with a plurality of frame blades (31); both end faces of the support frame (3) are provided with frame grooves (32); the outer side of the support frame (3) is provided with an elastomer (4); both end faces of the elastomer (4) are provided with notches (44); and the special-shaped end face ring (5) is embedded in the notches (44); A dynamic ring seat hole (7) is provided on one side of the support frame (3), and a rubber convex ring (43) is provided on the inner ring of one end of the elastic body (4); The special-shaped end face ring (5) is composed of a ring body (51) and an outwardly extending blade (52). The outwardly extending blade (52) is evenly arranged on the outer periphery of the ring body (51). A plurality of drainage grooves (53) are provided on the side walls of the ring body (51) and the outwardly extending blade (52). A plurality of compensation grooves (54) are provided on one side of the ring body (51) and the outwardly extending blade (52). The compensation grooves (54) and the drainage grooves (53) are interconnected. A large chamfer (55) is provided at the connection between the ring body (51) and the outwardly extending blade (52). A small chamfer (56) is provided on the outer periphery of one end face of the ring body (51) and the outwardly extending blade (52). The radius of the large chamfer (55) is 3-5 mm, and the radius of the small chamfer (56) is 1-2 mm. The top end of the extended blade (52) is at least 0.1 mm longer than the top end of the skeleton blade (31), and the width of the extended blade (52) is 3-5 mm.

2. The end surface wear-resistant elastic composite rotor according to claim 1, characterized in that: The radius of the cross-sectional circle of the rubber convex ring (43) is 0.5-1 mm, and the distance between the center of the cross-sectional circle of the rubber convex ring (43) and the side wall of the support frame (3) is 0.5-1 mm.

3. The end surface wear-resistant elastic composite rotor according to claim 1, characterized in that: The number of the skeleton blades (31) of the support skeleton (3) is at least 3, and the number of the skeleton blades (31) and the number of the extended blades (52) are correspondingly equal.

4. An elastic body production mold based on the end surface wear-resistant elastic composite rotor according to claim 1, characterized in that: The invention comprises a base (8), an upper base (9), a middle base (10), a second support ring (11) and a fixing screw (12); the base (8) is provided with a positioning column (81) and a lower star-shaped boss (82); the positioning column (81) is located in the center of the lower star-shaped boss (82); the base (8) is provided with a plurality of lower through holes (83); one side of the upper base (9) is provided with an upper star-shaped boss (91); the upper base (9) is provided with an injection hole (92) and an upper through hole (93); the other side of the upper base (9) is provided with an injection groove (94); the injection groove (94) and the injection hole (92) are connected to each other; the middle of the middle base (10) is provided with a A forming cavity (102) is arranged, and a middle seat (10) around the forming cavity (102) is also provided with a middle through hole (101); one side of the base (8) is in contact with one side of the middle seat (10), and a positioning column (81) passes through the forming cavity (102); an upper seat (9) is provided on the other side of the middle seat (10); a fixing screw (12) passes through the upper through hole (93), the middle through hole (101) and the lower through hole (83) in sequence to fix and position the upper seat (9), the middle seat (10) and the base (8); and a second support ring (11) is also provided between the lower star-shaped boss (82) of the base (8) and the positioning column (81).

5. The elastic body production mold for the end surface wear-resistant elastic composite rotor according to claim 4, characterized in that: The number and positions of the upper through holes (93), the middle through holes (101) and the lower through holes (83) correspond one to one; the outer shape of the forming cavity (102) is the same as the outer shape of the elastic body (4); and the lower star-shaped boss (82) and the upper star-shaped boss (91) are located in the forming cavity (102).

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