阅读说明：本技术 一种手动变量蠕动泵 (Manual variable peristaltic pump ) 是由 张文波 于 2019-10-28 设计创作，主要内容包括：本发明公开了一种手动变量蠕动泵,包括上端设有开口的泵壳,所述泵壳的侧面设有两个安装口,每个安装口内均设有夹紧组件；所述泵壳内在靠近上端开口处转动连接有底板,所述泵壳的上端开口处固定安装有盖板,所述底板上固定安装有转盖；所述泵壳上转动连接有动力轴；所述底板设有伸入泵壳内的圆柱凸起；所述圆柱凸起的圆周侧面上设有多个径向滑槽；每个径向滑槽内均滑动连接有顶杆,所述顶杆在远离动力轴的一端设有弧形挡板；所述底板上以动力轴为中心间隔均匀地设有多个挤压辊组件；所述底板上设有用于变量调节组件；该手动变量蠕动泵,不仅结构简单,而且利用常规电机作为动力源,手动控制变量。(The invention discloses a manual variable peristaltic pump, which comprises a pump shell, wherein the upper end of the pump shell is provided with an opening, the side surface of the pump shell is provided with two mounting ports, and a clamping assembly is arranged in each mounting port; a bottom plate is rotatably connected to the opening close to the upper end in the pump shell, a cover plate is fixedly installed at the opening at the upper end of the pump shell, and a rotating cover is fixedly installed on the bottom plate; the pump shell is rotatably connected with a power shaft; the bottom plate is provided with a cylindrical bulge extending into the pump shell; a plurality of radial sliding grooves are formed in the circumferential side surface of the cylindrical protrusion; a push rod is connected in each radial sliding groove in a sliding manner, and an arc-shaped baffle is arranged at one end of each push rod, which is far away from the power shaft; a plurality of squeeze roller assemblies are uniformly arranged on the bottom plate at intervals by taking the power shaft as a center; the bottom plate is provided with a variable adjusting component; the manual variable peristaltic pump is simple in structure, and a conventional motor is used as a power source to manually control variables.)

1. A manual variable peristaltic pump is characterized by comprising a pump shell, the upper end of the pump shell is provided with an opening, two mounting ports are formed in the side face of the pump shell, a clamping assembly is arranged in each mounting port, and the clamping assemblies are used for clamping a hose at the mounting ports; a bottom plate is rotatably connected to the opening close to the upper end in the pump shell, a cover plate used for preventing the bottom plate from being separated from the pump shell is fixedly installed at the opening of the upper end of the pump shell, and a rotating cover is fixedly installed on the bottom plate; the pump shell is rotatably connected with a power shaft which extends into the pump shell and is used for driving the bottom plate to rotate; the bottom plate extends towards the center of the end face of the pump shell and is provided with a cylindrical bulge extending into the pump shell, and the cylindrical bulge is used for winding and placing a hose; a plurality of radial sliding grooves are uniformly arranged on the circumferential side surface of the cylindrical protrusion at intervals by taking the power shaft as the middle; a push rod is connected in each radial sliding groove in a sliding manner, and an arc-shaped baffle is arranged at one end of each push rod, which is far away from the power shaft; a plurality of squeezing roller assemblies are uniformly arranged on the bottom plate at intervals by taking the power shaft as a center, and the squeezing roller assemblies are used for squeezing liquid in the pumping hose; the bottom plate is provided with a variable adjusting assembly, and the variable adjusting assembly is used for adjusting the distance between the arc-shaped baffle and the power shaft.

2. The manual variable peristaltic pump as claimed in claim 1, wherein the squeeze roller assembly comprises a roller frame, a rotating roller and a first spring, a plurality of first mounting openings corresponding to the radial sliding grooves in a one-to-one manner are uniformly formed in the bottom plate at intervals by taking the power shaft as a center, and a plurality of second mounting openings opposite to the first mounting openings are formed in the rotating cover; the roller frame is connected in the second mounting opening in a sliding mode along the axial direction of the power shaft, two supports which extend downwards through the first mounting opening and extend into the pump shell are arranged on the roller frame, a first rotating shaft is arranged between the two supports along the radial direction of the cylindrical bulge, the rotating roller is rotatably connected to the first rotating shaft, and the first spring is sleeved on the first rotating shaft and used for forcing one end of the rotating roller to be tightly pressed on the arc-shaped baffle; the roller frame is provided with pin holes on two opposite side surfaces along the horizontal direction, the upper end of the roller frame is provided with a sliding opening communicated with the pin holes, each pin hole is internally provided with a pin shaft and a second spring used for forcing the pin shaft to press the inner side wall of the second mounting opening, and a shifting piece fixedly connected with the pin shaft is connected in each sliding opening in a sliding way; the second mounting opening is provided with a first positioning hole and a second positioning hole from top to bottom in sequence on the inner side wall facing the pin hole, when the pin shaft is inserted into the first positioning hole, the rotating roller is pressed on the hose positioned in the pump shell, and when the pin shaft is inserted into the second positioning hole, the rotating roller leaves the hose.

3. The manual variable peristaltic pump according to claim 1, wherein the variable adjusting assembly comprises a rotary disc and a deflector rod, the rotary cover is provided with an avoiding groove in the middle of the end surface facing the bottom plate, and the upper end of the power shaft penetrates through the bottom plate and extends into the avoiding groove; the rotary table is rotatably connected to the upper end of the power shaft and is positioned in the avoidance groove, the rotary cover is provided with an arc avoidance port communicated with the avoidance groove, the lower end of the deflector rod is fixedly arranged on the rotary table, and the upper end of the deflector rod extends out of the arc avoidance port; the bottom plate is provided with radial sliding openings above each radial sliding groove, the turntable is provided with an arc-shaped groove above each radial sliding opening, and each ejector rod is provided with a pin penetrating through the radial sliding opening and extending into the arc-shaped groove; and the upper end of the shifting rod is provided with a positioning assembly.

4. The manual variable peristaltic pump of claim 1, wherein the compression assembly includes a compression cam rotatably coupled within the mounting port for compressing the hose against a sidewall of the mounting port; and the pressing cam is provided with a wrenching bulge.

5. The manual variable peristaltic pump according to claim 3, wherein the positioning assembly includes a positioning sleeve and a positioning spring, the positioning sleeve is slidably connected to the shifting lever, the shifting lever is provided with a convex edge at an end away from the rotating disc, and the positioning spring is sleeved on the shifting lever and is located between the positioning sleeve and the convex edge for forcing the positioning sleeve to be pressed on the rotating cover; the rotary cover is provided with positioning grooves on two sides of the arc avoiding opening, and the positioning sleeve is provided with positioning bulges used for being inserted into the positioning grooves on the end surface facing the rotary cover.

6. A manually variable peristaltic pump as claimed in claim 2, wherein each of the arcuate baffles has two limit tabs, and wherein the first rotor shaft is located between the two limit tabs.

7. The manually variable peristaltic pump of claim 1, wherein the number of pinch roller assemblies is six.

Technical Field

The invention belongs to the technical field of liquid pumps, and particularly relates to a manual variable peristaltic pump.

Background

The peristaltic pump pumps fluid by alternately squeezing and releasing an elastic delivery hose of the pump, and is generally used in the field of liquid metering and filling, such as medical detection and quantitative filling of chemical detection reagents, and the like. When a peristaltic pump is used for conveying liquid, a driver is generally arranged to control the rotating speed of the peristaltic pump, so that the flow rate of the peristaltic pump is controlled, and the driver is generally high in price, precise and easy to damage.

Disclosure of Invention

Technical problem to be solved

The invention aims to provide a manual variable peristaltic pump which utilizes a conventional motor as a power source and manually controls a variable.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a manual variable peristaltic pump comprises a pump shell with an opening at the upper end, wherein two mounting ports are formed in the side surface of the pump shell, a clamping assembly is arranged in each mounting port, and the clamping assemblies are used for clamping a hose at the mounting ports; a bottom plate is rotatably connected to the opening close to the upper end in the pump shell, a cover plate used for preventing the bottom plate from being separated from the pump shell is fixedly installed at the opening of the upper end of the pump shell, and a rotating cover is fixedly installed on the bottom plate; the pump shell is rotatably connected with a power shaft which extends into the pump shell and is used for driving the bottom plate to rotate; the bottom plate extends towards the center of the end face of the pump shell and is provided with a cylindrical bulge extending into the pump shell, and the cylindrical bulge is used for winding and placing a hose; a plurality of radial sliding grooves are uniformly arranged on the circumferential side surface of the cylindrical protrusion at intervals by taking the power shaft as the middle; a push rod is connected in each radial sliding groove in a sliding manner, and an arc-shaped baffle is arranged at one end of each push rod, which is far away from the power shaft; a plurality of squeezing roller assemblies are uniformly arranged on the bottom plate at intervals by taking the power shaft as a center, and the squeezing roller assemblies are used for squeezing liquid in the pumping hose; the bottom plate is provided with a variable adjusting assembly, and the variable adjusting assembly is used for adjusting the distance between the arc-shaped baffle and the power shaft.

According to the technical scheme, when the manual variable peristaltic pump is used, the pressing assembly at each mounting opening is controlled to open the two mounting openings, the squeezing roller assembly is lifted away from the bottom of the pump shell, one end of the hose is inserted into the pump from one mounting opening, the hose extends out of the other mounting opening along the inner wall of the pump shell, the two ends of the hose are pulled forcibly, the hose is attached to the arc-shaped surface of the arc-shaped baffle, the pressing assembly at each mounting opening is controlled to press the hose at the mounting opening, the squeezing roller assemblies of the corresponding number are controlled to press the hose as required, the bottom plate is driven to rotate through the power shaft, and liquid in the hose is pumped through the squeezing roller assemblies when the bottom plate rotates; in addition, the distance between the arc-shaped baffle and the power shaft is adjusted through the variable adjusting component, so that the radius of a curve formed by the surrounding of the hose is adjusted and changed, and the flow of the peristaltic pump is changed under the condition that the rotating speed of the power shaft is unchanged; the technical effect of changing the phase of the squeeze roll assembly according to the requirement can be achieved.

In a further technical scheme, the squeeze roller assembly comprises a roller frame, a rotating roller and a first spring, a plurality of first mounting openings which are in one-to-one correspondence with the radial sliding grooves are uniformly arranged on the bottom plate at intervals by taking a power shaft as a center, and a plurality of second mounting openings which are opposite to the first mounting openings are arranged on the rotating cover; the roller frame is connected in the second mounting opening in a sliding mode along the axial direction of the power shaft, two supports which extend downwards through the first mounting opening and extend into the pump shell are arranged on the roller frame, a first rotating shaft is arranged between the two supports along the radial direction of the cylindrical bulge, the rotating roller is rotatably connected to the first rotating shaft, and the first spring is sleeved on the first rotating shaft and used for forcing one end of the rotating roller to be tightly pressed on the arc-shaped baffle; the roller frame is provided with pin holes on two opposite side surfaces along the horizontal direction, the upper end of the roller frame is provided with a sliding opening communicated with the pin holes, each pin hole is internally provided with a pin shaft and a second spring used for forcing the pin shaft to press the inner side wall of the second mounting opening, and a shifting piece fixedly connected with the pin shaft is connected in each sliding opening in a sliding way; the second mounting opening is provided with a first positioning hole and a second positioning hole from top to bottom in sequence on the inner side wall facing the pin hole, when the pin shaft is inserted into the first positioning hole, the rotating roller is pressed on the hose positioned in the pump shell, and when the pin shaft is inserted into the second positioning hole, the rotating roller leaves the hose.

In a further technical scheme, the variable adjusting assembly comprises a rotary disc and a deflector rod, the middle of the end face of the rotary cover facing the bottom plate is provided with an avoiding groove, and the upper end of the power shaft penetrates through the bottom plate and extends into the avoiding groove; the rotary table is rotatably connected to the upper end of the power shaft and is positioned in the avoidance groove, the rotary cover is provided with an arc avoidance port communicated with the avoidance groove, the lower end of the deflector rod is fixedly arranged on the rotary table, and the upper end of the deflector rod extends out of the arc avoidance port; the bottom plate is provided with radial sliding openings above each radial sliding groove, the turntable is provided with an arc-shaped groove above each radial sliding opening, and each ejector rod is provided with a pin penetrating through the radial sliding opening and extending into the arc-shaped groove; and the upper end of the shifting rod is provided with a positioning assembly.

In a further technical scheme, the pressing assembly comprises a pressing cam, and the pressing cam is rotatably connected in the mounting opening and is used for pressing the hose on the side wall of the mounting opening; and the pressing cam is provided with a wrenching bulge.

In a further technical scheme, the positioning assembly comprises a positioning sleeve and a positioning spring, the positioning sleeve is connected to the shifting rod in a sliding mode, a convex edge is arranged at one end, far away from the turntable, of the shifting rod, and the positioning spring is sleeved on the shifting rod and located between the positioning sleeve and the convex edge and used for forcing the positioning sleeve to be tightly pressed on the rotary cover; the rotary cover is provided with positioning grooves on two sides of the arc avoiding opening, and the positioning sleeve is provided with positioning bulges used for being inserted into the positioning grooves on the end surface facing the rotary cover.

In a further technical scheme, each arc-shaped baffle is provided with two limiting convex plates, and the first rotating shaft is positioned between the two limiting convex plates.

In a further technical scheme, the number of the squeeze roller assemblies is six.

(III) advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

when the manual variable peristaltic pump is used, firstly, the pressing assembly at each mounting opening is controlled to open the two mounting openings, meanwhile, the squeezing roller assembly is lifted away from the bottom of a pump shell, then one end of a hose is inserted into the pump from one mounting opening, the hose extends out of the other mounting opening along the inner wall of the pump shell, then the two ends of the hose are pulled forcefully to enable the hose to be clung to the arc-shaped surface of the arc-shaped baffle, then the pressing assembly at each mounting opening is controlled to press the hose at the mounting opening, then the squeezing roller assemblies with corresponding number are controlled to press the hose as required, finally, the bottom plate is driven to rotate through the power shaft, and liquid in the hose is pumped through the squeezing roller assemblies when the bottom plate rotates; in addition, the distance between the arc-shaped baffle and the power shaft is adjusted through the variable adjusting component, so that the radius of a curve formed by the surrounding of the hose is adjusted and changed, and the flow of the peristaltic pump is changed under the condition that the rotating speed of the power shaft is unchanged; the technical effect of changing the phase of the squeeze roller assembly according to the requirement can be achieved; the manual variable peristaltic pump can save half of drivers used in cooperation with the peristaltic pump, and is low in price.

Drawings

FIGS. 1-4 are block diagrams of an assembly of the present invention;

FIG. 5 is a schematic cross-sectional view of the present invention;

FIG. 6 is a first angular exploded view of the present invention;

FIG. 7 is a second angle exploded view of the present invention;

FIGS. 8-9 are block diagrams of the flip cap of the present invention;

FIGS. 10-12 are block diagrams of the turntable of the present invention;

FIGS. 13-14 are block diagrams of the base plate of the present invention;

FIG. 15 is a block diagram of the cam of the present invention;

FIG. 16 is a view showing the construction of the lift pins and the arc-shaped baffle of the present invention;

fig. 17-18 are block diagrams of the squeeze roll assembly of the present invention.

Detailed Description

Referring to fig. 1-18, a manual variable peristaltic pump includes a pump housing 8 having an opening at an upper end thereof, two mounting ports 8a are formed in a side surface of the pump housing 8, and a clamping assembly is disposed in each mounting port 8a and used for clamping a hose to the mounting port 8 a; a bottom plate 1 is rotatably connected to the position, close to the upper end opening, in the pump shell 8, a cover plate 10 used for preventing the bottom plate 1 from being separated from the pump shell 8 is fixedly installed at the upper end opening of the pump shell 8, and a rotating cover 2 is fixedly installed on the bottom plate 1; the pump shell 8 is rotatably connected with a power shaft 9 which extends into the pump shell 8 and is used for driving the bottom plate 1 to rotate; the bottom plate 1 is provided with a cylindrical protrusion 101 extending into the pump shell 8 in an extending manner towards the center of the end face of the pump shell 8, and the cylindrical protrusion 101 is used for winding and placing a hose; six radial sliding grooves 1a are uniformly arranged on the circumferential side surface of the cylindrical protrusion 101 at intervals by taking the power shaft 9 as the middle; a push rod 5 is connected in each radial sliding groove 1a in a sliding manner, and an arc-shaped baffle plate 5c is arranged at one end, far away from the power shaft 9, of the push rod 5; six squeezing roller assemblies are uniformly arranged on the bottom plate 1 at intervals by taking the power shaft 9 as a center and are used for squeezing liquid in the pumping hose; the bottom plate 1 is provided with a variable adjusting assembly, and the variable adjusting assembly is used for adjusting the distance between the arc-shaped baffle 5c and the power shaft 9.

The squeeze roll assembly comprises a roll frame 12, a rotating roll 13 and a first spring 15, six first mounting openings 1b which are in one-to-one correspondence with the radial sliding grooves 1a are uniformly arranged on the bottom plate 1 at intervals by taking the power shaft 9 as a center, and six second mounting openings 2g which are opposite to the first mounting openings 1b are arranged on the rotating cover 2; the roller frame 12 is connected in the second mounting port 2g in a sliding manner along the axial direction of the power shaft 9, two brackets 12a which extend downwards through the first mounting port 1b and into the pump shell 8 are arranged on the roller frame 12, a first rotating shaft 16 is arranged between the two brackets 12a along the radial direction of the cylindrical protrusion 101, the rotating roller 13 is rotatably connected on the first rotating shaft 16, and the first spring 15 is sleeved on the first rotating shaft 16 and used for forcing one end of the rotating roller 13 to be pressed on the arc-shaped baffle 5 c; each arc-shaped baffle 5c is provided with two limiting convex plates 5b, and the first rotating shaft 16 is positioned between the two limiting convex plates 5 b; the roll frame 12 is provided with pin holes 12b on two opposite side surfaces along the horizontal direction, the upper end of the roll frame 12 is provided with a sliding port 12c communicated with the pin holes 12b, each pin hole 12b is internally provided with a pin shaft 14 and a second spring 17 used for forcing the pin shaft 14 to press the inner side wall of the second mounting port 2g, and a shifting piece 14b fixedly connected with the pin shaft 14 is connected in each sliding port 12c in a sliding way; the second mounting opening 2g is provided with a first positioning hole 2d and a second positioning hole 2e from top to bottom in sequence on the inner side wall facing the pin hole 12b, when the pin shaft 14 is inserted into the first positioning hole 2d, the rotating roller 13 is pressed on the hose positioned in the pump shell 8, and when the pin shaft 14 is inserted into the second positioning hole 2e, the rotating roller 13 leaves the hose.

The variable adjusting assembly comprises a rotary disc 4 and a shifting rod 4b, the middle of the end face of the rotary cover 2 facing the bottom plate 1 is provided with an avoiding groove 201, and the upper end of the power shaft 9 penetrates through the bottom plate 1 and extends into the avoiding groove 201; the rotary table 4 is rotatably connected to the upper end of the power shaft 9 and is positioned in the avoidance groove 201, the rotary cover 2 is provided with an arc avoidance port 2a communicated with the avoidance groove 201, the lower end of the driving lever 4b is fixedly arranged on the rotary table 4, and the upper end of the driving lever 4b extends out of the arc avoidance port 2 a; the bottom plate 1 is provided with radial sliding openings 1d above each radial sliding groove 1a, the turntable 4 is provided with an arc-shaped groove 4a above each radial sliding opening 1d, and each ejector rod 5 is provided with a pin 5d which penetrates through the radial sliding opening 1d and extends into the arc-shaped groove 4 a; and a positioning component is arranged at the upper end of the shifting rod 4 b. The positioning assembly comprises a positioning sleeve 6 and a positioning spring 11, the positioning sleeve 6 is connected to the shifting rod 4b in a sliding manner, a convex edge 4b1 is arranged at one end, far away from the rotating disc 4, of the shifting rod 4b, and the positioning spring 11 is sleeved on the shifting rod 4b and is positioned between the positioning sleeve 6 and the convex edge 4b1 to force the positioning sleeve 6 to be pressed on the rotating cover 2; the two sides of the arc-shaped avoiding opening 2a are provided with positioning grooves 2b on the rotary cover 2, and the positioning sleeve 6 is provided with positioning bulges 6a which are inserted into the positioning grooves 2b on the end surface facing the rotary cover 2.

The pressing component comprises a pressing cam 7, and the pressing cam 7 is rotatably connected in the mounting port 8a through a second rotating shaft 8b and is used for pressing the hose onto the side wall of the mounting port 8 a; the pressing cam 7 is provided with a wrenching protrusion 7 a.

When the manual variable peristaltic pump is used, the wrenching protrusion 7a is firstly pulled outwards, the compression cam 7 is rotated to open each mounting opening 8a, then two shifting pieces 14b on the extrusion roller assembly are pinched by hands, the two shifting pieces 14b are extruded together, the pin shaft 14 connected with the pressing cam is retracted into the pin hole 12b, then the roller frame 12 is lifted upwards to drive the rotating roller 13 to move upwards, the pin shaft 14 stops when moving to the position of the second positioning hole 2e, the two shifting pieces 14b are loosened, the pin shaft 14 enters the second positioning hole 2e under the action of the second spring 17, and the rotating roller 13 is lifted and positioned, so that the hose installation cannot be hindered. Then, one end of the hose is inserted into the pump from one of the mounting ports 8a, the hose extends out from the other mounting port 8a along the inner wall of the pump shell 8, then the two ends of the hose are pulled forcefully to enable the hose to be tightly attached to the arc-shaped surface 5a of the arc-shaped baffle 5c, and then the hose is tightly pressed at the two mounting ports 8a by turning the cam through the wrenching protrusion 7a to complete the mounting of the hose. According to the phase requirement, the squeezing roller assembly needing to work can be selected to be pushed to a working position (namely, the position of the roller frame 12 is pinched by two poking sheets 14b again to move the roller frame 12 so that the pin shaft 14 enters the first positioning hole 2 d) to squeeze the hose, the power shaft 9 is controlled to drive the bottom plate 1 to rotate, and then the rotating cover 2 on the bottom plate is driven to rotate, so that the squeezing roller assembly rotates around the power shaft 9, squeezes the hose, pumps liquid in the hose, and normal work is finished.

If the flow of the peristaltic pump needs to be changed, the peristaltic pump needs to be stopped first, all squeeze roller assemblies are lifted, the pressing assembly of the mounting opening 8a is opened, the positioning sleeve 6 is pulled to enable the two positioning protrusions 6a to be separated from the positioning grooves 2b on the two sides respectively, the deflector rod 4b is pushed to move along the arc-shaped avoiding opening 2a, the turntable 4 is further rotated, the pin 5d on the ejector rod 5 is matched with the arc-shaped groove 4a on the turntable 4, so that when the turntable 4 rotates, the arc-shaped groove 4a can pull the pin 5d to move along the radial sliding opening 1d, the ejector rod 5 can telescopically slide in the radial sliding groove 1a, the distance between the arc-shaped baffle 5c and the power shaft 9 is changed, after the deflector rod 4b is adjusted, the positioning sleeve 6 is loosened to enable the two positioning protrusions 6a to respectively enter the positioning grooves 2b on the two sides, and then the hose is pulled again, the hose is tightly attached to the arc-shaped surface 5a of the arc-shaped baffle 5c after the position is changed, then the hose of the mounting opening 8a is pressed tightly through the cam, and then the extrusion roller assembly needing to work is mounted, so that the variable is completed; according to the peristaltic pump, the radius of an arc curve generated by a hose in the pump is changed by changing the relative position of the arc surface 5a of the arc baffle 5c and the power shaft 9, the liquid amount extruded out by one rotation of the extrusion roller assembly is changed by changing the radius under the condition that the revolution of the motor is not changed, the liquid displacement is large when the radius is large, and the liquid displacement is small when the radius is small, so that the liquid flow pumped out by the peristaltic pump is controllable, and a driver matched with a common peristaltic pump for use can be omitted, so that the manufacturing cost is saved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.