Constant-speed constant-flow pump with vortex line cam

Abstract

The constant-speed constant-flow pump with the vortex line cam comprises a pump machine body, material cavities are symmetrically formed in the left side and the right side of the pump machine body respectively, plug bodies are movably arranged in the two material cavities respectively, and the two plug bodies are fixedly connected through a connecting piece; the main shaft is rotatably arranged in the horizontal through hole of the connecting piece, and one end of the main shaft extends to the outside of the pump machine main body and is connected with the driving mechanism; two vortex line cams are arranged on the main shaft in the axial direction, contact pieces corresponding to the two vortex line cams are arranged on the left side and the right side of the main shaft respectively, and the main shaft drives the two vortex line cams to make alternate contact with and be separated from the corresponding contact pieces in the constant-speed rotating process so as to drive the two plug bodies to make continuous constant-speed linear reciprocating motion. Therefore, the constant flow pump can supply slurry to an external sand mill at continuous and constant flow, pulse pressure is prevented from occurring in the slurry supply process, the ball leakage phenomenon is avoided, and the quality of the slurry discharged by the sand mill is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to slurry sand mill production and processing equipment, especially in a uniform speed constant flow pump with vortex line cam. BACKGROUND

[0002] The sand mill, also known as a bead mill, is mainly used for wet grinding of chemical liquid products. In order to avoid the grinding medium such as zirconium oxide beads from being discharged together with the ground material, a screen is usually arranged on the grinding spindle to separate the slurry and the grinding medium. However, the screen is prone to blockage, and the machine needs to be frequently stopped for dredging treatment. In recent years, in order to solve the problem of screen blockage, a screenless sand mill has appeared.

[0003] During the slurry sand mill process, the slurry pump is used to inject the slurry into the sand mill. If the plug body in the slurry pump cannot move at a uniform speed, the internal volume of the pump will not change uniformly when it sucks in and discharges fluid, which will cause pressure pulses when the slurry is output to the sand mill, i.e. the slurry entering the sand mill will generate an impact force. For the screenless sand mill, the above-mentioned impact force will cause the grinding medium in the sand mill to be discharged from the sand mill, resulting in a ball leakage phenomenon and affecting the quality of the slurry.

[0004] Therefore, it is necessary to design a slurry pump that can provide a constant delivery flow rate for the sand mill. SUMMARY

[0005] The utility model aims at providing a uniform speed constant flow pump with vortex line cam to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A uniform speed constant flow pump with vortex line cam is provided, which comprises a pump body. The left and right sides of the pump body are symmetrically provided with material cavities, and a plug body is movably arranged in each of the two material cavities. The ends of the two plug bodies close to each other are fixedly connected by a connecting piece, and a horizontal through hole is formed in the middle of the connecting piece. A horizontal main shaft is further provided, which penetrates through the horizontal through hole and is rotatably connected to the front and rear sides of the pump body. One end of the main shaft extends to the outside of the pump body and is connected to a driving mechanism. Two vortex line cams are arranged on the main shaft along the axial direction. Contact pieces corresponding to the two vortex line cams are arranged on the connecting pieces on the left and right sides of the main shaft or on the plug bodies on the left and right sides of the main shaft. During uniform rotation of the main shaft, the two vortex line cams and the corresponding contact pieces alternately contact and separate, driving the two plug bodies to continuously and uniformly move in a straight line.

[0008] Further, each of the vortex line cams is provided with two blades which are symmetrically arranged at the center, and the four blades are symmetrically arranged at the center as a whole, each of the blades comprises a contact curve segment and a clearance straight line segment which are connected to each other, the contact curve segment can contact the corresponding contact piece and drive the two plug bodies to move at a constant speed in a straight line, and the clearance straight line segment does not contact the contact piece.

[0009] Further, the starting point of the contact curve segment of one blade of the vortex line cam is connected to the ending point of the clearance straight line segment of another blade, and the ending point of the contact curve segment is connected to the starting point of the clearance straight line segment of the same blade; when the starting point or the ending point of one contact curve segment of one vortex line cam contacts the corresponding contact piece, the ending point or the starting point of one contact curve segment of another vortex line cam contacts the corresponding contact piece.

[0010] Further, the contact curve segment is an Archimedes spiral.

[0011] Further, the two vortex line cams are arranged on the front side and the rear side of the connecting piece respectively, and the two contact pieces are rolling bearings or rollers, one of the contact pieces is arranged on the front side of the connecting piece, and the other contact piece is arranged on the rear side of the connecting piece.

[0012] Further, the feeding pipe and the discharging pipe are further included, each of the material cavities is provided with a discharging port at the upper end and a feeding port at the lower end, the two feeding ports are communicated with the feeding pipe, and the two discharging ports are communicated with the discharging pipe.

[0013] Further, one-way valves are arranged between the two feeding ports and the feeding pipe and between the two discharging ports and the discharging pipe.

[0014] Further, a guide mechanism is further included, the guide mechanism comprises a first guide piece and a second guide piece which are slidably connected to each other, the first guide piece is fixedly arranged between the two material cavities, and the second guide piece is fixedly arranged on the connecting piece.

[0015] Further, a sealing piece is arranged between the plug body and the corresponding material cavity.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The utility model provides a uniform speed constant current pump with vortex cam, through the outside driving mechanism drive main shaft rotation, first vortex cam and second vortex cam take turns to contact first plug body and second plug body, first plug body and second plug body respectively in first material cavity and second material cavity even speed back and forth repeated movement, when the plug body extrusion material cavity, slurry is pushed to the discharge pipeline by the plug body and exports to the external sand mill, when the plug body exits material cavity, slurry is inputted into material cavity from the outside slurry supply mechanism through the feeding pipe due to the pressure effect, in turn circulation, when the main shaft rotates a circle, completes a cycle, because first plug body and second plug body carry on continuous even speed straight line reciprocating motion, so that first material cavity and second material cavity can carry out seamless connection even speed feeding or even speed discharge, thereby make the constant current pump can supply slurry to the external sand mill with continuous constant flow, prevent the pulse pressure from appearing in the slurry supply process, avoid the generation of the leak ball phenomenon, guarantee the quality of the slurry discharged by the sand mill. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is vertical section view of the utility model uniform speed constant current pump with vortex cam;

[0019] Fig. 2 It is horizontal section view of the utility model uniform speed constant current pump with vortex cam;

[0020] Fig. 3 It is top view of the utility model uniform speed constant current pump with vortex cam;

[0021] Fig. 4 It is structure view of the utility model main shaft and vortex cam;

[0022] Fig. 5 It is plug body left shift schematic view of the utility model;

[0023] Fig. 6 It is plug body right shift schematic view of the utility model;

[0024] Fig. 7 It is vortex cam front view of the utility model;

[0025] The marks of each component in the drawing are as follows: 11, first contact piece;12, first plug body;13, material cavity;131, first material cavity;132, second material cavity;21, second contact piece;22, second plug body;3, first vortex cam;31, contact curve section;32, empty straight line section;4, second vortex cam;5, main shaft;6, connecting piece;61, horizontal through hole;71, feeding pipe;72, discharge pipe;8, guide mechanism;9, check valve;10, sealing piece. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. For the purpose of clear illustration, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0027] It should be noted that all directional indications such as upper, lower, left, right, front, back, and the like used in the embodiments of the present application are only used to explain the relative position relationship, movement condition, and the like between components in a certain specific posture, as shown in the drawings. If the specific posture changes, the directional indications also change accordingly.

[0028] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and does not mean to specially indicate the order or sequence, nor to limit the present application. It is only to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0029] In order to further understand the utility model content, characteristics and effects of the present application, the following embodiments are exemplified, and are described in detail as follows with reference to the drawings.

[0030] Please refer to Figs. 1-7The utility model provides a uniform speed constant flow pump with vortex line cam, including pump machine body, the left and right sides of pump machine body are symmetrically provided with material cavity 13 respectively, and the movable setting of two material cavities 13 is provided with plug body respectively, the end of two plug bodies is fixedly connected through connecting piece 6, and the middle part of connecting piece 6 is equipped with horizontal through -hole 61, still include the horizontal setting of main shaft 5, main shaft 5 passes through horizontal through -hole 61 and is rotatably connected with the front and rear sides of pump machine body, and one end of main shaft 5 extends to the outside of pump machine body and is connected with driving mechanism, two vortex line cams are arranged on main shaft 5 along the axial direction, and the connecting piece 6 on the left and right sides of main shaft 5 or the plug body on the left and right sides of main shaft 5 is respectively equipped with the contact piece corresponding with two vortex line cams, and the contact and separation of two vortex line cams and corresponding contact piece are driven in the process of the uniform rotation of main shaft 5 to drive two plug bodies to carry out continuous uniform linear reciprocating motion.In the embodiment, the pump body is symmetrically provided with a first material cavity 131 and a second material cavity 132 on the left and right sides respectively, the first material cavity 131 is movably provided with a first plug body 12, and the second material cavity 132 is movably provided with a second plug body 22; the first plug body 12 and the second plug body 22 are fixedly connected by a connecting piece 6 at the end close to each other, the end close to each other of the first plug body 12 and the second plug body 22 is provided with a connecting groove, the connecting piece 6 is specifically a connecting plate, the two ends of the connecting plate are protrusively provided with connecting blocks, the connecting blocks are inserted into the connecting grooves, and the connecting grooves and the connecting blocks are fixedly connected by fasteners, so that the first plug body 12, the second plug body 22 and the connecting piece 6 are connected together; the main shaft 5 is sequentially provided with a first vortex cam 3 and a second vortex cam 4 along the axial direction, the connecting piece 6 on the left side of the main shaft 5 or the first plug body 12 is provided with a first contact piece 11 corresponding to the first vortex cam 3, and the connecting piece 6 on the right side of the main shaft 5 or the second plug body 22 is provided with a second contact piece 21 corresponding to the second vortex cam 4, the first vortex cam 3 and the first contact piece 11 are in contact or separated, and the second vortex cam 4 and the second contact piece 21 are separated or contacted during the rotation of the main shaft 5; when the first vortex cam 3 and the first contact piece 11 are in contact, and the second vortex cam 4 and the second contact piece 21 are separated, at this time, the first vortex cam 3 drives the first contact piece 11 to move left at a constant speed in a straight line, so as to drive the first plug body 12 and the second plug body 22 to move left at a constant speed in a straight line synchronously, so that the volume of the first material cavity 131 decreases to realize discharging, and the volume of the second material cavity 132 increases to realize feeding; when the first vortex cam 3 and the first contact piece 11 are separated, and the second vortex cam 4 and the second contact piece 21 are in contact, at this time, the second vortex cam 4 drives the second contact piece 21 to move right at a constant speed in a straight line, so as to drive the first plug body 12 and the second plug body 22 to move right at a constant speed in a straight line synchronously, so that the volume of the first material cavity 131 increases to realize feeding, and the volume of the second material cavity 132 decreases to realize discharging; and the two states that the first vortex cam 3 and the first contact piece 11 are in contact, and the second vortex cam 4 and the second contact piece 21 are in contact seamlessly connect, so that the first plug body 12 and the second plug body 22 are driven by the main shaft 5 and the two vortex cams to move continuously and uniformly in a straight line, so that the first material cavity 131 and the second material cavity 132 can realize seamless and uniform feeding or discharging, so that the constant-flow pump in the embodiment can supply slurry to the sand mill at a continuous and constant flow, prevent pulse pressure during slurry supply, avoid the generation of the ball leakage phenomenon, and ensure the quality of the slurry discharged by the sand mill.

[0031] Specifically, each of the vortex cam is provided with two blades which are symmetrically arranged, and the four blades are symmetrically arranged as a whole. Each blade comprises a contact curve segment 31 and a clearance straight line segment 32 which are connected. The contact curve segment 31 can contact the corresponding contact member and drive the two plug bodies to move at a constant speed in a straight line. The clearance straight line segment 32 does not contact the contact member. When the main shaft 5 drives the cam to rotate, the contact curve segments 31 of the blades in the two vortex cams are seamlessly connected and sequentially contact the corresponding contact members, so that the plug bodies on both sides move at a constant speed in a straight line.

[0032] More specifically, the starting point of the contact curve segment 31 of one blade in the vortex cam is connected to the ending point of the clearance straight line segment 32 of the other blade, and the ending point of the contact curve segment 31 is connected to the starting point of the clearance straight line segment 32 of the same blade. When the starting point or the ending point of one contact curve segment 31 in one vortex cam contacts the corresponding contact member, the ending point or the starting point of one contact curve segment 31 in the other vortex cam contacts the corresponding contact member. Therefore, when the main shaft 5 drives the cam to rotate, one contact curve segment 31 in one vortex cam contacts the corresponding contact member, and when the contact curve segment 31 in the vortex cam rotates to the ending point and contacts the corresponding contact member, the starting point of one contact curve segment 31 in the other vortex cam contacts the corresponding contact member. The process is sequentially repeated. In the time period from the starting point to the ending point of each contact curve segment 31, the main shaft 5 rotates by 90 degrees. When the main shaft 5 rotates one revolution, the contact curve segments 31 of the four blades sequentially and seamlessly contact the corresponding contact members, so that the constant-flow pump can supply slurry to the sand mill at a constant flow rate.

[0033] More specifically, the contact curve segment 31 is an Archimedes spiral. When the main shaft 5 rotates at a constant speed, the contact curve segment 31 can drive the corresponding contact member to move at a constant speed, so that the two plug bodies can move back and forth between the two material cavities 13 at a constant speed.

[0034] Specifically, the two vortex cams are arranged on the front and rear sides of the connecting member 6, and the two contact members are rolling bearings or rollers. One of the contact members is arranged on the front side of the connecting member 6, and the other contact member is arranged on the rear side of the connecting member 6. The first vortex cam 3 and the first contact member 11 are arranged on the front side of the connecting member 6, and the second vortex cam 4 and the second contact member 21 are arranged on the rear side of the connecting member 6. By reasonably arranging the positions of the vortex cams and the corresponding contact members, the overall structure is more reasonable and compact.

[0035] Specifically, the feeding pipe 71 and the discharging pipe 72 are further included, each of the material cavities 13 is provided with a discharging port at the upper end and a feeding port at the lower end, the two feeding ports are communicated with the feeding pipe 71, and the two discharging ports are communicated with the discharging pipe 72. The feeding pipe 71 is communicated with an external slurry supply mechanism, the discharging pipe 72 is communicated with an external sand mill, when one side of the plug body extrudes the corresponding material cavity 13, the slurry in the corresponding material cavity 13 is pushed out to the discharging pipe 72, the discharging of the slurry is realized, and meanwhile the plug body on the other side gradually withdraws from the corresponding material cavity, the internal pressure of the corresponding material cavity 13 gradually decreases, so that the material in the feeding pipe 71 enters the corresponding material cavity 13, and the feeding of the slurry is realized; when the plug body moves in the opposite direction, the feeding and discharging actions of the two material cavities 13 are exchanged, that is, one of the two material cavities 13 is always in the feeding state, and the other material cavity 13 is always in the discharging state, so that the constant flow pump in the embodiment can continuously feed from the feeding pipe 71 and continuously discharge to the discharging pipe 72.

[0036] More specifically, the two feeding ports and the feeding pipe 71 and the two discharging ports and the discharging pipe 72 are both provided with one-way valves 9. The one-way valve 9 between the feeding port and the feeding pipe 71 is used to ensure that the slurry can only flow from the feeding pipe 71 to the material cavity 13, and the one-way valve 9 between the discharging port and the discharging pipe 72 is used to ensure that the slurry can only flow from the material cavity 13 to the discharging pipe 72, so as to ensure the conveying direction of the slurry.

[0037] Specifically, the guiding mechanism 8 is further included, the guiding mechanism 8 includes a first guiding part and a second guiding part which are in sliding cooperation with each other, the first guiding part is fixedly arranged between the two material cavities 13, and the second guiding part is fixedly arranged on the connecting part 6. The pump body is provided with a shell which is sleeved on the material cavities 13 and the outer side of the plug body to protect them, the first guiding part is arranged on the inner wall of the shell and located between the two material cavities 13, the second guiding part is fixed on the connecting part 6, the first guiding part and the second guiding part are provided with concave-convex parts which are in cooperation with each other, when the plug body reciprocates between the two material cavities 13, the connecting part 6 moves synchronously to drive the second guiding part to slide on the first guiding part, the reciprocating movement of the plug body is guided, the deviation of the plug body in the movement process is prevented, and the continuous and uniform linear reciprocating movement of the plug body is further ensured.

[0038] Specifically, the sealing part 10 is arranged between the plug body and the corresponding material cavity 13. The side of the material cavity 13 close to the connecting part 6 is provided with a channel for the reciprocating movement of the plug body, and the sealing part 10 is specifically a sealing ring which is embedded on the inner wall of the channel to prevent the slurry in the material cavity 13 from overflowing outward through the gap between the plug body and the channel.

[0039] In use, the feed pipe 71 is connected to an external slurry supply mechanism, the discharge pipe 72 is connected to an external sand mill, the external driving mechanism is started to drive the main shaft 5 to rotate, the first scroll cam 3 and the second scroll cam 4 on the main shaft 5 rotate with the main shaft 5, when the starting point of one contact curve segment 31 of the first scroll cam 3 or the second scroll cam 4 contacts the corresponding contact piece (this time taking the first scroll cam 3), the first contact piece 11 is pushed, the first plug body 12 extrudes the first cavity 131, the slurry in the first cavity 131 can only be pushed into the discharge pipe 72 and discharged to the external sand mill due to the restriction of the one-way valve 9, at the same time, the second scroll cam 4 does not contact the second contact piece 21, and the second plug body 22 moves to the left with the first plug body 12, so that the second plug body 22 gradually exits the second cavity 132, the pressure in the second cavity 132 decreases, and the slurry in the external slurry supply mechanism enters the second cavity 132 due to the restriction of the one-way valve 9; when the contact curve segment 31 of the first scroll cam 3 rotates to the end and contacts the first contact piece 11, the starting point of one contact curve segment 31 of the corresponding second scroll cam 4 contacts the second contact piece 21 of the second plug body 22, as the main shaft 5 continues to rotate, the first scroll cam 3 is separated from the first contact piece 11, and the contact curve segment 31 in the second scroll cam 4 pushes the second contact piece 21, drives the second plug body 22 to extrude the second cavity 132, and the slurry in the second cavity 132 can only be pushed into the discharge pipe 72 and discharged to the external sand mill due to the restriction of the one-way valve 9, at the same time, the first plug body 12 moves to the left with the second plug body 22, so that the first plug body 12 gradually exits the first cavity 131, the pressure in the first cavity 131 decreases, and the slurry in the external slurry supply mechanism enters the first cavity 131 through the feed pipe 71 due to the restriction of the one-way valve 9, until the contact curve segment 31 of the second scroll cam 4 rotates to the end and contacts the second contact piece 21, the other contact curve segment 31 of the corresponding first scroll cam 3 contacts the first contact piece 11, and the cycle is repeated in turn, and one cycle is completed when the main shaft 5 rotates one revolution, and the contact between the contact curve segments 31 in the four blades and the corresponding contact pieces is seamlessly connected in one cycle, so that the first plug body 12 and the second plug body 22 are driven by the main shaft 5 and the two scroll cams to perform continuous and uniform linear reciprocating motion, so that the first cavity 131 and the second cavity 132 can perform seamless and uniform feeding or discharging, so that the constant flow pump can supply slurry to the sand mill at a continuous and constant flow, prevent pulse pressure during slurry supply, avoid the generation of the ball leakage phenomenon, and ensure the quality of the slurry discharged by the sand mill.

[0040] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A constant flow pump with a vortex cam, comprising a pump body, left and right sides of the pump body are respectively provided with a material cavity (13) symmetrically, a plug body is movably arranged in each of the two material cavities (13); characterized in that: Two ends of the two plug bodies close to each other are fixedly connected through a connecting piece (6), a horizontal through hole (61) is formed in the middle of the connecting piece (6); a horizontally arranged main shaft (5) passes through the horizontal through hole (61) and is rotatably connected to the front and rear sides of the pump body, one end of the main shaft (5) extends to the outside of the pump body and is connected with a driving mechanism; two vortex cams are arranged on the main shaft (5) along the axial direction, and the connecting piece (6) on the left and right sides of the main shaft (5) or the plug body on the left and right sides of the main shaft (5) is respectively provided with a contact piece corresponding to the two vortex cams, and the main shaft (5) drives the two vortex cams to alternately contact and separate with the corresponding contact pieces during uniform rotation, so as to drive the two plug bodies to continuously and uniformly reciprocate in a straight line.

2. The constant flow pump with a vortex cam according to claim 1, characterized in that: Each of the vortex cams is provided with two center-symmetrical blades, and the four blades are center-symmetrical as a whole, each blade includes a contact curve segment (31) and a clearance straight line segment (32) connected with each other, the contact curve segment (31) can contact with the corresponding contact piece and drive the two plug bodies to uniformly move in a straight line, and the clearance straight line segment (32) does not contact with the contact piece.

3. The constant flow pump with a vortex cam according to claim 2, characterized in that: The starting point of the contact curve segment (31) of one blade of the vortex cam is connected with the ending point of the clearance straight line segment (32) of the other blade, the ending point of the contact curve segment (31) is connected with the starting point of the clearance straight line segment (32) of the same blade; when the starting point or the ending point of one contact curve segment (31) of one vortex cam contacts with the corresponding contact piece, the ending point or the starting point of one contact curve segment (31) of the other vortex cam contacts with the corresponding contact piece.

4. The constant flow pump with a vortex cam according to claim 2, characterized in that: The contact curve segment (31) is an Archimedes spiral.

5. The constant flow pump with a vortex cam according to claim 1, characterized in that: The two vortex cams are respectively located on the front and rear sides of the connecting piece (6), and the two contact pieces are rolling bearings or rollers, one of the contact pieces is arranged on the front side of the connecting piece (6), and the other contact piece is arranged on the rear side of the connecting piece (6).

6. The constant flow pump with a vortex cam according to claim 1, characterized in that: The feeding pipe (71) and the discharging pipe (72) are further included, the upper end of each material cavity (13) is provided with a discharging port, and the lower end is provided with a feeding port, the two feeding ports are in communication with the feeding pipe (71), and the two discharging ports are in communication with the discharging pipe (72).

7. The constant flow pump with a vortex cam according to claim 6, characterized in that: Unidirectional valves (9) are arranged between the two feeding ports and the feeding pipe (71) and between the two discharging ports and the discharging pipe (72).

8. The constant flow pump with a vortex cam according to claim 1, characterized in that: A guide mechanism (8) is further included, the guide mechanism (8) includes a first guide piece and a second guide piece in sliding fit with each other, the first guide piece is fixedly arranged between the two material cavities (13), and the second guide piece is fixedly arranged on the connecting piece (6).

9. The constant flow pump with a vortex cam according to claim 1, characterized in that: A sealing piece (10) is arranged between the plug body and the corresponding material cavity (13).

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