CN213360380U - Linear double-hose pump - Google Patents

Abstract

The utility model discloses a two hose pumps of orthoscopic, include: the device comprises a driving assembly, a pressure pipe assembly, an elastic hose, a closure assembly and a pump body assembly; the pressure pipe assembly, the elastic hose and the interception assembly are all arranged in the pump body; the two groups of elastic hoses are arranged on two opposite sides in the pump body in parallel, and the working states of the two groups of elastic hoses are opposite; the pressure pipe assemblies and the closure assemblies are positioned between the two groups of elastic hoses, the closure assemblies are divided into two groups, and at least two groups of pressure pipe assemblies are arranged between the two groups of closure assemblies; the pipe pressing component and the closure component are connected with the driving component, the driving component is used for driving the closure component to clamp or loosen the elastic hose, and the driving component is also used for driving the pipe pressing component to extrude or loosen the elastic hose so as to realize material conveying. The utility model discloses a two hose pumps of orthoscopic have simple structure, displacement stability, hose inner wall do not have friction, pulse advantage such as little.

Description

Linear double-hose pump

Technical Field

The utility model mainly relates to a positive displacement delivery pump technical field especially relates to a two hose pumps of orthoscopic.

Background

Hose pumps fall into the category of peristaltic pumps, with no strict distinction between them. The hose pump acts like a finger pinching a hose filled with fluid, and as the finger slides forward, the fluid in the hose moves forward. Except that in the hose pump, the fingers are replaced by rollers. The flexible conveying hose in the hose pump is alternately extruded and released to pump fluid, the roller extrudes the flexible hose and rotates like the hose is squeezed by two fingers, a positive pressure cavity and a negative pressure cavity are formed in the hose, and the fluid flows and is discharged along with the positive pressure cavity and the negative pressure cavity. The hose pump has the advantages of no pollution, strong self-priming capability, simple structure, better accuracy and the like, and is widely applied to various industries, including the chemical industry, the pharmaceutical industry, the food filling industry and the like.

In the conventional rotary hose pump, there are also problems as follows:

1. when the rotary hose pump is used for filling, the hose is extruded by the rollers and moves in the direction, and the rollers are in direct contact with the outer pipe wall of the hose, so that the outer pipe wall of the hose is greatly abraded, and the service life of the hose is shortened.

2. When the rotary hose pump is used for conveying minicells or microcapsules in the field of medicine, minicells or microcapsules are extremely easy to crush, and the conveying effect of the hose pump is influenced; in addition, the rollers compress the hose at fixed points for a long time, and can also generate permanent deformation damage to the hose, so that the service life of the hose is shortened.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a simple structure, discharge capacity are stable, hose inner wall does not have friction, the little orthoscopic double hose pump of pulse.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a linear dual hose pump comprising: the device comprises a driving assembly, a pressure pipe assembly, an elastic hose, a closure assembly and a pump body assembly; the pressure pipe assembly, the elastic hose and the closure assembly are all arranged in the pump body; the two groups of elastic hoses are arranged on two opposite sides in the pump body in parallel, and the working states of the two groups of elastic hoses are opposite; the pressure pipe assemblies and the closure assemblies are positioned between the two groups of elastic hoses, the closure assemblies are divided into two groups, and at least two groups of pressure pipe assemblies are arranged between the two groups of closure assemblies; the pressure pipe assembly and the closure assembly are connected with the driving assembly, the driving assembly is used for driving the closure assembly to clamp or release the elastic hose, and the driving assembly is further used for driving the pressure pipe assembly to extrude or release the elastic hose so as to realize material conveying.

As a further improvement of the utility model, the driving assembly comprises a power motor and a driving shaft, the driving shaft is parallel to two groups of elastic hoses in the pump body, and the driving shaft is connected with the output end of the power motor; the pipe pressing assembly and the intercepting assembly are both connected with the driving shaft, and the driving shaft is driven by the power motor to rotate so as to drive the pipe pressing assembly and the intercepting assembly to do sinusoidal reciprocating motion.

As a further improvement of the utility model, the pipe pressing component comprises a pipe pressing transmission cam, a pipe pressing block and a driven shaft; at least two groups of pressure pipe transmission cams are respectively arranged on the driving shaft along different radial directions; the two sides of the pressure pipe transmission cam are respectively provided with a pressure pipe block and a driven shaft, and the driven shaft is positioned between the pressure pipe transmission cam and the pressure pipe block; the driving force on the driving shaft is transmitted to a pressure pipe transmission cam and then transmitted to a pressure pipe block from the driving shaft, and the pressure pipe block is driven to extrude or loosen the elastic hose, so that material conveying is realized.

As a further improvement of the utility model, the tube pressing block is rotatably arranged in the pump body through a fixed shaft, and an elastic clamping sleeve is arranged at the joint of the tube pressing block and the fixed shaft; the driven shaft is arranged in the groove of the pipe pressing block.

As a further improvement, in the working process of the hose pump, the pressing pipe block incompletely extrudes the elastic hose, and the inner cavity pipe wall of the elastic hose is not contacted.

As a further improvement of the utility model, the intercepting component comprises an intercepting transmission cam, an intercepting block and a driven shaft; the two groups of the intercepting transmission cams are respectively arranged at two ends of the driving shaft along opposite radial directions; the two sides of the intercepting transmission cam are respectively provided with a driven shaft and an intercepting block, and the driven shafts are positioned between the intercepting transmission cam and the intercepting block; the driving force on the driving shaft is transmitted to the intercepting transmission cam and then transmitted to the intercepting block from the driving shaft, so that the intercepting block is driven to clamp or loosen the elastic hose, and the material backflow is prevented.

As a further improvement of the utility model, the interception block is rotatably arranged in the pump body through a fixed shaft, and an elastic jacket is arranged at the joint of the interception block and the fixed shaft; the driven shaft is positioned in the groove of the cutoff block.

As a further improvement, the pump body assembly comprises at least two baffles, one side of the elastic hose is in contact with the baffles, and the other side is in contact with the closure assembly and the pressure pipe assembly.

As a further improvement, the end of the driving shaft away from the power motor is provided with a support bearing, which is used for preventing the cut-off assembly from falling off from the end of the driving shaft.

Compared with the prior art, the utility model has the advantages of:

1. the linear double-hose pump of the utility model has the advantages that the pipe pressing component, the elastic hose and the interception component are integrated and installed in the pump body, two groups of elastic hoses are arranged in parallel on two opposite sides in the pump body, the pipe pressing component and the interception component are arranged between the two groups of elastic hoses, and the multi-group pipe pressing component is arranged between the two groups of interception components, so that the linear double-hose pump has compact structure and simple principle; the during operation, under drive assembly's drive, the subassembly centre gripping that dams or loosen the elastic hose, press the pipe subassembly extrusion or loosen the elastic hose, through the subassembly that dams with press the mutually supporting of pipe subassembly for two sets of elastic hoses in the pump body are in opposite operating condition, a set of elastic hose is in the imbibition state promptly, and another group elastic hose is then in the flowing back state, realized the continuation of the same kind of material and carried or the intermittent type nature of two kinds of different materials and carried, the work efficiency of hose pump has been showing and has been improved, the use cost of hose pump has been reduced.

2. The utility model discloses a two hose pumps of orthoscopic, drive assembly has been constituteed through motor power and driving shaft, and the direction that sets up of driving shaft is parallel to each other with two sets of elastic hose, still will press the pipe subassembly simultaneously and cut off the subassembly and all be connected with the driving shaft, when motor power drive driving shaft constant speed rotation, the drive is pressed the pipe subassembly and is cut off the reciprocal rotation that the subassembly produced the sinusoidal waveform for elastic hose, carry out the extrusion of regularity to elastic hose, realize the material and carry, through pressing the pipe subassembly and cut off a power supply of subassembly sharing, the control of drive power has effectively been simplified. In addition, under the cooperation of subassembly that dams, press the periodic reciprocating motion extrusion elastic hose of sinusoidal curve of pipe subassembly to warp through the multiunit, make the material carry to the other end from elastic hose one end constantly, the discharge capacity stability of hose pump has been improved, and adopt extruded mode also to reduce the deformation degree to elastic hose extrusion, make elastic hose avoid its extending direction's tensile compression stress by the extrusion in-process, and then reduced the friction loss to elastic hose, the working life of elastic hose has been prolonged, the running cost of hose pump has been reduced.

3. The utility model discloses a two hose pumps of orthoscopic through pressing pipe drive cam, pipe piece and driven shaft component to press the pipe subassembly, presses pipe drive cam with the multiunit to follow different radial installing on the driving shaft respectively, and the both sides that pipe drive cam were all equipped with to every group press pipe piece and driven shaft, and the driving shaft transmits power motor's drive power to pressing pipe drive cam, and the multiunit is pressed pipe drive cam and is driven corresponding multiunit pipe piece and carry out sinusoidal waveform's reciprocating motion, extrudees elastic hose in proper order. The pipe pressing block incompletely extrudes the elastic hose, the pipe wall of the inner cavity of the elastic hose is not contacted, the self-abrasion of the inner cavity of the hose is reduced, and the risk that abrasion particles generated by mutual contact friction between the inner walls of the hose fall into materials to cause pollution is avoided. And the pipe pressing block incompletely extrudes the elastic hose, the deformation degree of the elastic hose is small, so that the extrusion effect of the hose on materials in the hose is reduced, and the hose pump is ensured not to extrude and damage the materials when conveying the materials. In addition, because the pipe pressing block and the elastic hose are not completely extruded, on one hand, the time required by the recovery of the elastic hose can be reduced, and on the other hand, the phenomenon that the elastic hose is recovered rapidly to a large extent to generate high-strength pulse can be avoided.

4. The utility model discloses a two hose pumps of orthoscopic, through damming drive cam, the subassembly that dams is constituteed to interception piece and driven shaft, two sets of transmission cams that dams are installed at the driving shaft both ends along opposite radial respectively, in the hose pump working process, two sets of subassembly movements to opposite extreme position that dams, a set of elastic hose's in the pump body entry end is by the piece complete clamping that dams promptly, and another elastic hose's exit end is then clamped tightly by the piece complete clamping that dams, cooperate through the sinusoidal wave form reciprocating motion with multiunit pressure pipe piece again, make two sets of elastic hose in the pump body be in the state of imbibition and flowing back respectively, the existing work efficiency that does benefit to the improvement hose pump, also provide sufficient elasticity recovery time for elastic hose, the precision stability of hose pump has been improved.

Drawings

Fig. 1 is a schematic view of the structural principle of the linear double-hose pump of the present invention.

Fig. 2 is a schematic view of the structural principle of the linear double-hose pump medium-pressure pipe assembly of the present invention.

Fig. 3 is a schematic view of the structure principle of the intercepting component in the linear double-hose pump of the present invention.

Illustration of the drawings:

1. a power motor; 2. a drive shaft; 3. an intercepting transmission cam; 4. a flow interception block; 5. a pressure tube drive cam; 6. pressing the pipe block; 7. an elastic hose; 8. a baffle plate; 9. a driven shaft; 10. a support bearing; 11. a fixed shaft; 12. an elastic jacket.

Detailed Description

The invention will be further described with reference to the drawings and specific preferred embodiments without limiting the scope of the invention.

Examples

As shown in fig. 1 to 3, the present invention provides a linear dual-hose pump, including: the device comprises a driving assembly, a pressure pipe assembly, an elastic hose 7, a closure assembly and a pump body assembly; the pressure pipe assembly, the elastic hose 7 and the closure assembly are all arranged in the pump body; the two groups of elastic hoses 7 are arranged on two opposite sides in the pump body in parallel, and the working states of the two groups of elastic hoses 7 are opposite; the pressure pipe assemblies and the closure assemblies are positioned between the two groups of elastic hoses 7, the closure assemblies are divided into two groups, and at least two groups of pressure pipe assemblies are arranged between the two groups of closure assemblies; the pressure pipe assembly and the closure assembly are connected with the driving assembly, the driving assembly is used for driving the closure assembly to clamp or loosen the elastic hose 7, and the driving assembly is also used for driving the pressure pipe assembly to extrude or loosen the elastic hose 7 so as to realize material conveying.

In this embodiment, through will pressing pipe subassembly, elastic hose 7 and the subassembly that dams all integrated installation in the pump body to opposite both sides parallel arrangement has two sets of elastic hose 7 in the pump body, and presses pipe subassembly and the subassembly setting that dams between two sets of elastic hose 7, and the multiunit is pressed the pipe subassembly and is set up again between two sets of subassemblies that dams, has compact structure, the simple advantage of principle. The during operation, under drive assembly's drive, the subassembly centre gripping that dams or loosen elastic hose 7, press the pipe subassembly extrusion or loosen elastic hose, through the subassembly that dams with press the mutually supporting of pipe subassembly, make two sets of elastic hose 7 in the pump body be in opposite operating condition, a set of elastic hose 7 is in the imbibition state promptly, and another group elastic hose 7 is then in the flowing back state, the continuation of having realized the same kind of material is carried or the intermittent type nature of two kinds of different materials is carried, the work efficiency of hose pump has been showing to be improved, the use cost of hose pump has been reduced.

It should be noted that, in this embodiment, one end of each elastic hose 7 extends out of the pump body for inputting materials, and the other end of each elastic hose 7 passes through the pump body to output materials; the multiple groups of pressure pipe assemblies sequentially extrude each elastic hose 7 according to a certain rule, so that materials are sucked into the pipe from one end of each elastic hose 7 and then flow out of the other end of each elastic hose 7. The both ends that flexible hose 7 went in and out the pump body all correspond and are provided with the subassembly that dams, and the subassembly that dams cooperates with flexible hose 7 in order to carry out anti-return operation.

As shown in fig. 1, in this embodiment, the driving assembly includes a power motor 1 and a driving shaft 2, the driving shaft 2 is parallel to two sets of elastic hoses 7 in the pump body, and the driving shaft 2 is connected to an output end of the power motor 1; the pipe pressing component and the closure component are both connected with the driving shaft 2, and the driving shaft 2 is driven by the power motor 1 to rotate so as to drive the pipe pressing component and the closure component to do sinusoidal reciprocating motion.

In this embodiment, drive assembly has been constituteed through power motor 1 and driving shaft 2, and driving shaft 2 set up the direction be parallel to each other with two sets of elastic hose 7, still will press the pipe subassembly simultaneously and cut off the subassembly and all be connected with driving shaft 2, when power motor 1 drive driving shaft 2 constant speed rotated, the drive is pressed the pipe subassembly and is cut off the subassembly and produce the reciprocal rotation of sinusoidal wave form for elastic hose 7, extrude elastic hose 7, realize the material and carry, through pressing the pipe subassembly and cut off a power supply of subassembly sharing, the control of drive power has effectively been simplified. In addition, under the cooperation of the intercepting component, the elastic hose 7 is extruded to deform by the reciprocating motion of sinusoidal waveform of the multiple groups of pressure pipe components, so that materials are continuously conveyed from one end of the elastic hose 7 to the other end of the elastic hose, and the discharge capacity stability of the hose pump is improved. And the deformation degree of the elastic hose 7 is reduced by adopting an extrusion mode, so that the elastic hose 7 is free from tensile and compressive stress in the extension direction in the extrusion process, the friction loss of the elastic hose 7 is reduced, the service life of the elastic hose 7 is prolonged, and the running cost of the hose pump is reduced. It will be appreciated that in other embodiments, the power source of the drive assembly may be other mechanisms having power take-off functionality.

As shown in fig. 2, in the present embodiment, the pipe pressing assembly includes a pipe pressing drive cam 5, a pipe pressing block 6 and a driven shaft 9; at least three groups of pressure pipe transmission cams 5 are respectively arranged on the driving shaft 2 along different radial directions; the two sides of the pressure pipe transmission cam 5 are both provided with a pressure pipe block 6 and a driven shaft 9, and the driven shaft 9 is positioned between the pressure pipe transmission cam 5 and the pressure pipe block 6; the driving force on the driving shaft 2 is transmitted to the pressure pipe transmission cam 5 and then transmitted to the pressure pipe block 6 from the moving shaft 9, so that the pressure pipe block 6 is driven to extrude or loosen the elastic hose 7; so as to realize material conveying. In addition, in the working process of the hose pump, the pressure pipe block 6 incompletely extrudes the elastic hose 7, and the inner cavity pipe wall of the elastic hose 7 is not contacted.

Further, the pipe pressing block 6 is rotatably arranged in the pump body through a fixed shaft 11, and an elastic jacket 12 is arranged at the joint of the pipe pressing block 6 and the fixed shaft 11; the driven shaft 9 is arranged in a groove of the pressure pipe block 6.

In this embodiment, through pressing pipe transmission cam 5, press pipe piece 6 and driven shaft 9 to constitute and press the pipe subassembly, press pipe transmission cam 5 with the multiunit to follow different radial installation on driving shaft 2 respectively, and the both sides that pipe transmission cam 5 was pressed to every group all are equipped with and press pipe piece 6 and driven shaft 9, driving shaft 2 transmits the drive power of motor power 1 to pressing pipe transmission cam 5, the multiunit is pressed pipe transmission cam 5 and is driven corresponding multiunit and is pressed pipe piece 6 and carry out sinusoidal wave form's reciprocating motion, extrude elastic hose 7 in proper order. The pipe pressing block 6 incompletely extrudes the elastic hose 7, the pipe wall of the inner cavity of the elastic hose 7 is not contacted, the self-abrasion of the inner cavity of the hose is reduced, and the risk that abrasion particles generated by mutual contact friction between the inner walls of the hoses fall into materials to cause pollution is avoided. Moreover, the pipe pressing block 6 incompletely extrudes the elastic hose 7, the deformation degree of the elastic hose 7 is small, the extrusion effect of the hose on materials in the hose is reduced, and the hose pump is ensured not to extrude the materials when conveying the materials. In addition, because the pipe pressing block 6 and the elastic hose 7 are not completely extruded, on one hand, the time required by the elastic hose 7 to recover can be reduced, and on the other hand, the elastic hose 7 can be prevented from recovering rapidly to a large extent to generate high-strength pulse.

In the embodiment, a groove is formed in one side of the pressure pipe block 6 facing the pressure pipe transmission cam 5, the driven shaft 9 is installed in the groove, and the pressure pipe block 6 is rotatably installed in the pump body through the fixed shaft 11. Through the limiting effect of the groove, the driven shaft 9 is prevented from sliding in the operation process, and the operation reliability of the pressure pipe assembly is improved. The elastic jacket 12 is arranged at the joint of the pipe pressing block 6 and the fixed shaft 11, so that the friction loss between the pipe pressing block 6 and the fixed shaft 11 can be reduced, the pipe pressing block 6 can be assisted to return by the elastic restoring force of the elastic jacket 12, and the stability of the pipe pressing block 6 is improved.

As shown in fig. 2, the position of the pressure pipe block 6, which is attached to the elastic hose 7 and has no extrusion force at all, is the initial eccentric position of the pressure pipe transmission cam 5, when the pressure pipe transmission cam 5 rotates gradually, the driven shaft 9 continuously contacts with the outer contour of the pressure pipe transmission cam 5, and continuously transmits the pushing force of the pressure pipe transmission cam 5 to the pressure pipe block 6, and as the pressure pipe block 6 is rotatably installed in the pump body, the pressure pipe block 6 also rotates correspondingly, and continuously extrudes the elastic hose 7. The multiple groups of pipe pressing transmission cams 5 are respectively installed on the driving shaft 2 along different radial directions, and the multiple groups of pipe pressing blocks 6 perform corresponding sine curve waveform reciprocating motion to sequentially extrude the elastic hoses 7 so as to realize continuous and stable conveying of materials. Along with the rotation of the pressure pipe transmission cam 5, the pressure pipe transmission cam 5 enters the initial eccentric position again, the pushing force of the pressure pipe transmission cam 5 on the driven shaft 9 is gradually reduced, the pressure pipe block 6 can also gradually rotate to return to the initial position, and the elastic hose 7 is completely loosened. Therefore, the pipe pressing driving cam 5 rotates for a circle, and the pipe pressing block 6 finishes one-cycle extrusion and release of the elastic hose 7. And because the two sides of the pressure pipe transmission cam 5 are provided with the pressure pipe blocks 6 and the driven shaft 9, when the elastic hose 7 on one side in the pump body is gradually extruded by the plurality of groups of pressure pipe blocks 6, the elastic hose 7 on the opposite side in the pump body is gradually released. I.e. the working conditions of the two sets of elastic hoses 7 are completely opposite.

As shown in fig. 3, the intercepting assembly comprises an intercepting transmission cam 3, an intercepting block 4 and a driven shaft 9; two groups of intercepting transmission cams 3 are respectively arranged at two ends of the driving shaft 2 along opposite radial directions; the two sides of the intercepting transmission cam 3 are both provided with a driven shaft 9 and an intercepting block 4, and the driven shaft 9 is positioned between the intercepting transmission cam 3 and the intercepting block 4; the driving force on the driving shaft 2 is transmitted to the intercepting transmission cam 3, and then is transmitted to the intercepting block 4 from the moving shaft 9, so that the intercepting block 4 is driven to clamp or loosen the elastic hose 7, and the material backflow is prevented.

Furthermore, the interception block 4 is rotatably arranged in the pump body through a fixed shaft 11, and an elastic jacket 12 is arranged at the joint of the interception block 4 and the fixed shaft 11; the driven shaft 9 is located in a groove of the shut-off block 4.

In the embodiment, the intercepting component is formed by the intercepting transmission cam 3, the intercepting block 4 and the driven shaft 9 so as to clamp and release the elastic hose 7. A groove is arranged on one side of the interception block 4 facing the interception driving cam 3, the driven shaft 9 is arranged in the groove, and the interception block 4 is rotatably arranged in the pump body through a fixed shaft 11. Through the limiting effect of the groove, the driven shaft 9 is prevented from sliding in the operation process, and the operation reliability of the cut-off assembly is improved. The side of the interception block 4, which is contacted with the elastic hose 7, is arranged in a finger shape so as to improve the clamping stability of the elastic hose 7; meanwhile, the elastic jacket 12 is arranged at the joint of the interception block 4 and the fixed shaft 11, so that the friction loss between the interception block 4 and the fixed shaft 11 can be reduced, and the elastic restoring force of the elastic jacket 12 can be utilized to assist the interception block 4 to return, thereby improving the stability of the interception block 4. In addition, because two sets of transmission cams 3 that dams are installed at driving shaft 2 both ends along opposite radial respectively, in the hose pump working process, two sets of subassemblies that dams move to the extreme position that is totally opposite, the entry end of a set of elastic hose 7 in the pump body is by the piece 4 that dams completely tight, and the exit end of another set of elastic hose 7 is then by the piece 4 that dams completely presss from both sides tightly, cooperate through the reciprocating motion with the sinusoidal curve wave form of multiunit pressure pipe piece again, make two sets of elastic hose in the pump body be in the state of imbibition and flowing back respectively, the existing work efficiency that does benefit to improves the hose pump, also provide sufficient elasticity recovery time for elastic hose, the precision stability of hose pump has been improved.

As shown in fig. 3, the position where the shutoff block 4 is attached to the elastic tube 7 and there is no pressing force at all is the initial eccentric position of the shutoff driving cam 3. When the intercepting transmission cam 3 rotates gradually, the driven shaft 9 is continuously in contact with the outer contour of the intercepting transmission cam 3, and continuously transmits the pushing force of the intercepting transmission cam 3 to the intercepting block 4. Since the shut-off block 4 is rotatably mounted in the pump body, the shut-off block 4 is also rotated accordingly and the elastic tube 7 is completely compressed. Along with the rotation of the intercepting transmission cam 5, the intercepting transmission cam enters the initial eccentric position again, the pushing force of the intercepting transmission cam 3 on the driven shaft 9 is gradually reduced, the intercepting block 4 can also gradually rotate to return to the initial position, and the elastic hose 7 is completely loosened. The length and the position of the outer side curve of the intercepting transmission cam 3 are fixed and invariable, and the intercepting block 4 can be driven to correspondingly rotate in the pump body along with the change of the position relation between the intercepting transmission cam 3 and the driven shaft 9, so that the elastic hose 7 can be clamped or loosened. Receive appearance structure's influence, the transmission of the driving force between drive cam 3 and the driven shaft 9 that dams has certain regularity, utilizes this law, can control the interception piece 4 to carry out the centre gripping of regularity or loosen the action to elastic hose 7, has advantages such as easy operation, control are accurate, reliable and stable, has improved the measurement precision of hose pump greatly. It will be appreciated that in other embodiments, the shut-off assembly may be a one-way valve or a pinch valve or a solenoid valve, or an on-off valve, but is not limited to only on-off valves and valve banks as described above, depending on the actual requirements.

It will be appreciated that in other embodiments, the compression block 6 or the shutoff block 4 may also be mounted in the pump body by means of a compressed elastomer; with the aid of the compressed elastomer, the pressure pipe block 6 or the shut-off block 4 is moved by lifting and lowering to come into contact with or away from the elastic hose 7. In addition, because a certain time is needed for squeezing the flexible pipe to discharge liquid, the interception driving cam 3 and the pressing pipe driving cam 5 can be set to be different in diameter, and the diameter of the interception driving cam 3 can be larger than that of the pressing pipe driving cam 5.

In the embodiment shown in fig. 1, the pump body assembly comprises at least two baffles 8, one side of the elastic hose 7 is in contact with the baffles 8, and the other side is in contact with the shutoff assembly and the pressure pipe assembly. Specifically, because adopt extruded mode to let elastic hose 7 produce deformation, when damming piece 4 and pressing pipe piece 6 to elastic hose 7 and extrude, baffle 8 can provide the holding power for elastic hose 7, avoids elastic hose 7 to take place to slide. In order to further improve the stability of the elastic hose 7, a corresponding hose groove may be provided on the baffle plate 8, and the elastic hose 7 may be embedded in the hose groove. Further, the end part of the driving shaft 2, which is far away from the power motor 1, is provided with a support bearing 10, and the support bearing 10 is used for preventing the cut-off assembly from falling off from the end part of the driving shaft 2. Through the limiting effect of the supporting bearing 10, the rotation stability of the intercepting transmission cam 3 and the pressing pipe transmission cam 5 on the driving shaft 2 is improved.

As shown in fig. 1, three groups of pressure pipe assemblies are installed in the pump body, when filling is performed, the driving force of the power motor 1 is transmitted to the interception driving cam 3 and the pressure pipe driving cam 5 through the driving shaft 2, the interception driving cam 3 close to one side of the power motor 1 pushes the interception block 4 to compress and continuously compress the elastic hose 7 on the side of the pump body a, and the elastic hose 7 on the side of the pump body b is in a conduction state; the intercepting transmission cam 3 close to one side of the supporting bearing 10 pushes the intercepting block 4 to tightly press and continuously press the elastic hose 7 on the side of the pump body b, and the elastic hose 7 on the side of the pump body a is in a conducting state. Meanwhile, the three groups of pressure pipe transmission cams 5 push the three groups of pressure pipe blocks 6 to sequentially extrude the elastic hoses 7 on the side of the pump body a, the space of the inner cavities of the elastic hoses 7 pressed down by the pressure pipe blocks 6 is reduced, and the pressure of fluid in the tube cavities is increased, so that the fluid in the tube cavities is discharged. Along with the constant-speed rotation of the driving shaft 2, the three groups of pipe pressing blocks 6 continuously press the elastic hose 7 down according to the reciprocating motion of the sine curve waveform, and materials in the pipe cavity are continuously and stably discharged. In the process, the elastic hose 7 on the side of the pump body b gradually loosens due to the pipe pressing block 6, and the elastic hose 7 is recovered by the elasticity of the elastic hose 7 to increase the space in the pipe cavity to form negative pressure so as to suck materials into the pipe cavity. That is, the elastic tube 7 on the pump body a side is in the liquid discharge state, and the elastic tube 7 on the pump body b side is in the liquid suction state.

When the pressure pipe transmission cam 5 rotates to an initial eccentric position or reaches a preset filling amount, the interception transmission cam 3 close to one side of the support bearing 10 pushes the interception block 4 to compress and continuously compress the elastic hose 7 on the side of the pump body a, and the elastic hose 7 on the side of the pump body b is in a conducting state; the intercepting transmission cam 3 close to one side of the power motor 1 pushes the intercepting block 4 to tightly press and continuously press the elastic hose 7 on the side of the pump body b, and the elastic hose 7 on the side of the pump body a is in a conducting state. Meanwhile, the three groups of pressure pipe transmission cams 5 push the three groups of pressure pipe blocks 6 to sequentially extrude the elastic hoses 7 on the side of the pump body b, the space of the inner cavities of the elastic hoses 7 pressed down by the pressure pipe blocks 6 is reduced, and the pressure of fluid in the tube cavities is increased, so that the fluid in the tube cavities is discharged. Along with the constant-speed rotation of driving shaft 2, three group's pressure pipe pieces 6 constantly push down elastic hose 7 according to sinusoidal reciprocating motion, and the material in the lumen is steadily discharged continuously. In the process, the elastic hose 7 on the pump body a side gradually loosens due to the pipe pressing block 6, and the elastic hose 7 recovers by the elasticity of itself to increase the space in the pipe cavity to form negative pressure so as to suck the material into the pipe cavity. That is, the elastic tube 7 on the pump body b side is in the liquid discharge state, and the elastic tube 7 on the pump body a side is in the liquid suction state.

Under the drive of the power motor 1, the interception drive cam 3 and the pressure pipe drive cam 5 which are connected with the driving shaft 2 rotate for a period, and two groups of elastic hoses 7 in the pump body respectively complete a pressure suction process. Set up three way connection at the exit end of two sets of elastic hose 7 and converge, can realize the continuous transport of the same kind of material. Of course, intermittent delivery of two different materials can also be achieved by means of two sets of flexible hoses 7. In the actual production process, the specific number of the pressure pipe assemblies can be adaptively adjusted so as to improve the working efficiency of the hose pump to the maximum extent.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make numerous changes and modifications to the disclosed embodiments, or modify equivalent embodiments, without departing from the spirit and scope of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims (9)

1. A linear dual hose pump, comprising: the device comprises a driving assembly, a pressure pipe assembly, an elastic hose (7), a closure assembly and a pump body assembly; the pressure pipe assembly, the elastic hose (7) and the interception assembly are all arranged in the pump body; the two groups of elastic hoses (7) are arranged on two opposite sides in the pump body in parallel, and the working states of the two groups of elastic hoses (7) are opposite; the pressure pipe assemblies and the closure assemblies are positioned between two groups of elastic hoses (7), the closure assemblies are divided into two groups, and at least two groups of pressure pipe assemblies are arranged between the two groups of closure assemblies; the pressure pipe assembly and the closure assembly are connected with the driving assembly, the driving assembly is used for driving the closure assembly to clamp or release the elastic hose (7), and the driving assembly is further used for driving the pressure pipe assembly to extrude or release the elastic hose (7) so as to realize material conveying.

2. The linear double-hose pump according to claim 1, characterized in that the driving assembly comprises a power motor (1) and a driving shaft (2), the driving shaft (2) and two groups of elastic hoses (7) in the pump body are parallel to each other, and the driving shaft (2) is connected with the output end of the power motor (1); the pipe pressing assembly and the closure assembly are both connected with the driving shaft (2), and the driving shaft (2) is driven to rotate by the power motor (1) so as to drive the pipe pressing assembly and the closure assembly to do sinusoidal reciprocating motion.

3. The linear dual hose pump according to claim 2, wherein the pressure tube assembly comprises a pressure tube drive cam (5), a pressure tube block (6), and a driven shaft (9); at least two groups of pressure pipe transmission cams (5) are respectively arranged on the driving shaft (2) along different radial directions; the two sides of the pressure pipe transmission cam (5) are respectively provided with a pressure pipe block (6) and a driven shaft (9), and the driven shaft (9) is positioned between the pressure pipe transmission cam (5) and the pressure pipe block (6); the driving force on the driving shaft (2) is transmitted to a pressure pipe transmission cam (5), and then transmitted to a pressure pipe block (6) through a driven shaft (9), so that the pressure pipe block (6) is driven to extrude or loosen an elastic hose (7) to realize material conveying.

4. A linear double-hose pump according to claim 3, wherein the tube pressing block (6) is rotatably installed in the pump body through a fixed shaft (11), and an elastic jacket (12) is arranged at the joint of the tube pressing block (6) and the fixed shaft (11); the driven shaft (9) is arranged in a groove of the pipe pressing block (6).

5. The linear double-hose pump according to claim 4, characterized in that the tube pressing block (6) does not completely press the elastic hose (7) during the operation of the hose pump, and the inner cavity tube wall of the elastic hose (7) is not contacted.

6. The linear dual hose pump according to claim 2, characterized in that the shut-off assembly comprises a shut-off drive cam (3), a shut-off block (4) and a driven shaft (9); the two groups of intercepting transmission cams (3) are respectively arranged at two ends of the driving shaft (2) along opposite radial directions; the two sides of the intercepting transmission cam (3) are respectively provided with a driven shaft (9) and an intercepting block (4), and the driven shafts (9) are positioned between the intercepting transmission cam (3) and the intercepting block (4); the driving force on the driving shaft (2) is transmitted to the intercepting transmission cam (3), and then is transmitted to the intercepting block (4) from the driving shaft (9), so that the intercepting block (4) is driven to clamp or loosen the elastic hose (7) to prevent the backflow of the materials.

7. The linear double-hose pump according to claim 6, characterized in that the shut-off block (4) is rotatably mounted in the pump body by a fixed shaft (11), and an elastic jacket (12) is arranged at the joint of the shut-off block (4) and the fixed shaft (11); the driven shaft (9) is positioned in the groove of the intercepting block (4).

8. The linear dual-hose pump according to any one of claims 1 to 7, characterized in that the pump body assembly comprises at least two baffles (8), the elastic hose (7) being in contact with the baffles (8) on one side and with a shut-off assembly and a pressure tube assembly on the other side.

9. Linear dual hose pump according to any of claims 2 to 7, characterized in that the end of the driving shaft (2) remote from the power motor (1) is provided with a support bearing (10), the support bearing (10) being intended to prevent the interception assembly from falling off the end of the driving shaft (2).

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