Uniform constant flow pump with spiral line cam

Abstract

The application discloses a uniform-speed constant-flow pump with vortex-line cams, which comprises a pump body, material cavities symmetrically arranged on the left and right sides of the pump body, plug bodies movably arranged in the two material cavities and fixedly connected through connecting pieces, a horizontally arranged main shaft rotatably arranged in a horizontal through hole of the connecting piece, one end of the main shaft extending to the outside of the pump body and connected with a driving mechanism, two vortex-line cams arranged on the main shaft along the axial direction, and contact pieces corresponding to the two vortex-line cams arranged on the left and right sides of the main shaft. In the process of uniform-speed rotation of the main shaft, the two vortex-line cams drive the contact pieces to alternately contact and separate, so that the two plug bodies are driven to continuously and uniformly move linearly, and the constant-flow pump can continuously and constantly supply slurry to an external sand mill, pulse pressure is prevented from occurring in the slurry supply process, the phenomenon of ball leakage is avoided, and the quality of slurry discharged from the sand mill is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to slurry sanding production and processing equipment, in particular to a uniform constant flow pump with vortex 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 clogging and needs to be frequently stopped for dredging. In recent years, screenless sand mills have appeared to solve the problem of screen clogging.

[0003] During the slurry sanding process, a slurry pump is needed to inject the slurry into the sand mill. If the plug 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 produce an impact force. For a screenless sand mill, the above 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 present application aims to provide a uniform constant flow pump with vortex cam to solve the problems raised in the background.

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

[0007] A uniform constant flow pump with vortex cam is provided, comprising a pump body, two material cavities are symmetrically arranged on the left and right sides of the pump body, and a plug is movably arranged in each of the two material cavities; the plugs are fixedly connected at their ends close to each other 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, the main shaft passes 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 cams are arranged on the main shaft along the axial direction, and a contact piece corresponding to each vortex cam is arranged on the connecting piece on the left and right sides of the main shaft or on the plug on the left and right sides of the main shaft; during uniform rotation of the main shaft, the two vortex cams and the corresponding contact pieces are alternately contacted and separated to drive the two plugs to move continuously and uniformly in a straight line.

[0008] Further, each of the vortex line cams is provided with two blades which are symmetrically arranged, and the four blades are symmetrically arranged as a whole, each of the blades comprises a contact curve segment and a clearance straight line segment which are connected, the contact curve segment can contact with the corresponding contact member 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 with the contact member.

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

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

[0011] Further, the two vortex line cams are arranged on the front and back sides of the connecting member respectively, 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, and the other contact member is arranged on the back side of the connecting member.

[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, the 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, the guiding mechanism is further included, the guiding mechanism comprises a first guiding member and a second guiding member which are slidably connected with each other, the first guiding member is fixedly arranged between the two material cavities, and the second guiding member is fixedly arranged on the connecting member.

[0015] Further, the sealing members are arranged between the plug bodies and the corresponding material cavities.

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

[0017] The present application provides a constant flow pump with vortex cam, which is driven by an external driving mechanism to rotate a main shaft, a first vortex cam and a second vortex cam contact a first plug body and a second plug body alternately, the first plug body and the second plug body move back and forth in the first material cavity and the second material cavity at a constant speed, when the plug body extrudes the material cavity, the slurry is pushed by the plug body to the discharge pipeline and output to the external sand mill, when the plug body exits the material cavity, the slurry is input into the material cavity from the external slurry supply mechanism through the feeding pipeline due to the pressure effect, and the cycle is repeated in turn, and a cycle is completed when the main shaft rotates one round, since the first plug body and the second plug body move back and forth at a constant speed, the first material cavity and the second material cavity can be connected seamlessly to realize uniform feeding or discharging, so that the constant flow pump can supply slurry to the external sand mill at a 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. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a vertical sectional view of the constant flow pump with vortex cam of the present application.

[0019] Fig. 2 It is a horizontal sectional view of the constant flow pump with vortex cam of the present application.

[0020] Fig. 3 It is a top view of the constant flow pump with vortex cam of the present application.

[0021] Fig. 4 It is a structure diagram of the main shaft and the vortex cam of the present application.

[0022] Fig. 5 It is a left-moving plug body diagram of the present application.

[0023] Fig. 6 It is a right-moving plug body diagram of the present application.

[0024] Fig. 7 It is a front view of the vortex cam of the present application.

[0025] The labels of the components in the drawings are as follows: 11, first contact; 12, first plug body; 13, material cavity; 131, first material cavity; 132, second material cavity; 21, second contact; 22, second plug body; 3, first vortex cam; 31, contact curve segment; 32, empty straight line segment; 4, second vortex cam; 5, main shaft; 6, connecting piece; 61, horizontal through hole; 71, feeding pipeline; 72, discharge pipeline; 8, guide mechanism; 9, one-way 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 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, such 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 merely 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 defined with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments 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, nor within the protection scope required by the present application.

[0029] In order to further understand the content, characteristics and effects of the present application, the following embodiments are exemplified and described in detail below 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 through a connecting piece 6 at one end close to each other, the first plug body 12 and the second plug body 22 are both provided with a connecting groove at one end close to each other, the connecting piece 6 is specifically a connecting plate, the connecting plate is provided with a connecting block protruding at both ends, the connecting block is inserted into the connecting groove, and the connecting groove and the connecting block are fixedly connected through a fastener, 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 line 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 move at a constant speed in a straight line, and the clearance straight line segment 32 does not contact with the contact piece. When the main shaft 5 drives the cam to rotate, the contact curve segments 31 of the blades in the two vortex line cams seamlessly connect with each other to alternately touch the corresponding contact pieces, so that the plug bodies on both sides move at a constant speed in a straight line and reciprocate continuously.

[0032] More specifically, the starting point of the contact curve segment 31 of one blade in the vortex line cam is connected with 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 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 in one vortex line cam contacts with the corresponding contact piece, the ending point or the starting point of one contact curve segment 31 in the other vortex line cam contacts with the corresponding contact piece. Therefore, when the main shaft 5 drives the cam to rotate, the contact curve segment 31 in one vortex line cam contacts with the contact piece on the corresponding side, when the contact curve segment 31 in the vortex line cam rotates to the ending point position and contacts with the corresponding contact piece, the starting point of the contact curve segment 31 in the other vortex line cam contacts with the contact piece on the corresponding side, and the cycle is repeated, the rotation angle of the main shaft 5 is 90 degrees when each contact curve segment 31 contacts with the corresponding contact piece from the starting point to the ending point, and the contact curve segments 31 of the four blades sequentially and seamlessly contact with the corresponding contact pieces when the main shaft 5 rotates one circle, so that the constant flow pump can supply slurry to the sand mill at a continuous constant flow.

[0033] More specifically, the contact curve segment 31 is an Archimedes spiral. Since 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 piece 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 line cams are located on the front and rear sides of the connecting piece 6 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 6, and the other contact piece is arranged on the rear side of the connecting piece 6. Specifically, the first vortex line cam 3 and the first contact piece 11 are located on the front side of the connecting piece 6, and the second vortex line cam 4 and the second contact piece 21 are located on the rear side of the connecting piece 6, so that the overall structure is more reasonable and compact by reasonably arranging the positions of the vortex line cams and the corresponding contact pieces.

[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 preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and 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. Each vortex cam is provided with two center-symmetrical blades, and the four blades are center-symmetrically arranged, each blade comprises 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; 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, and 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; 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).

2. The constant flow pump with a vortex cam according to claim 1, characterized in that: The contact curve segment (31) is an Archimedes spiral.

3. 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 arranged, 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).

4. The constant flow pump with a vortex cam according to claim 3, characterized in that: A one-way valve (9) is arranged between the two feeding ports and the feeding pipe (71) and between the two discharging ports and the discharging pipe (72).

5. The constant flow pump with a vortex cam according to claim 1, characterized in that: A guide mechanism (8) is further arranged, the guide mechanism (8) comprises a first guide member and a second guide member which are slidably matched with each other, the first guide member is fixedly arranged between the two material cavities (13), and the second guide member is fixedly arranged on the connecting piece (6).

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

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