A miniature peristaltic pump

Abstract

This utility model relates to the field of peristaltic pump technology and discloses a miniature peristaltic pump. A through hole is provided on one side of the pump base, through which a motor passes and extends into the base. The main gear meshes with a disc gear, driving a double-layer spur gear and a Y-shaped gear, ultimately rotating the roller body. The roller body is located inside the pump base, with a steel needle passing through it. A roller shaft is mounted on the roller body, and a flexible tube is fitted onto the roller shaft. One end of an adapter is connected to a flexible tube and installed between the middle frame and the pump cover. The roller shaft compresses the flexible tube to create a sealed vacuum environment for pumping liquid. Compared with existing technologies, this invention adds an adapter, one end of which is inside the pump, and the other end can be connected to a target object, thus solving the problem of no liquid being dispensed when the angle between the external flexible tube and the pump outlet is less than 90 degrees.

Description

Technical Field

[0001] This utility model relates to the field of peristaltic pump technology, and more specifically, to a miniature peristaltic pump. Background Technology

[0002] Peristaltic pumps pump fluid by alternately squeezing and releasing a tubing through the rotation of rollers. The pump tubing between three rotating rollers forms a "pillow" shape for the fluid. Currently, peristaltic pumps use a motor to drive the roller body, and the rollers on the roller body directly squeeze the tubing to create a sealed vacuum environment to draw in liquid. However, in existing miniature peristaltic pumps, the external tubing needs to be oriented differently depending on the specific application. When the angle between the external tubing and the pump outlet is less than 90 degrees, the tubing may bend and flatten, preventing liquid from being pumped out.

[0003] Therefore, how to improve the peristaltic pump so that the external hose is not bent or flattened has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The technical problem to be solved by this utility model is that, in the existing technology, the rotating shaft gear of the motor drives the roller body, and the roller on the roller body directly squeezes the hose to form a sealed vacuum environment to pump liquid. When the angle between the external hose of the pump and the liquid outlet of the pump body is less than 90 degrees, the existing pump is prone to bending and flattening, and cannot pump out liquid. This invention provides a micro peristaltic pump.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to construct a micro peristaltic pump, which has the following features:

[0006] The pump base shell is formed into a hollow structure. A through hole is provided on one side of the pump base shell to facilitate the installation of the motor. Two steel needle holes are provided inside the pump base shell.

[0007] An electric motor, the shaft of which passes through the through hole and extends into the pump base housing;

[0008] The main gear, which is a bevel gear, is mounted on the motor shaft;

[0009] Disc gear, which is double-layered, with the lower bevel gear meshing with the main gear and the upper gear being a spur gear;

[0010] A long steel needle is inserted into a steel needle hole on the side of the pump base housing near the motor.

[0011] A short steel needle, which is inserted into another steel needle hole in the pump bottom housing;

[0012] A double-layer spur gear, which is double-layered with a through hole in the middle, is mounted on a short steel needle. The bottom gear meshes with the upper gear of the disc-shaped gear.

[0013] The middle frame is formed as a hollow structure. One end of the middle frame is provided with a semi-circular groove with a rib at the groove, and the other end is provided with a hook structure.

[0014] The roller body is triangular prism with a through hole in the middle and a "Y"-shaped groove at the bottom. The three corners of the roller body are respectively provided with semi-circular grooves. The through hole of the roller body passes through a long steel needle and is set inside the pump bottom shell.

[0015] The "Y" shaped gear is double-layered with a through hole in the middle. The bottom layer is a circular spur gear that meshes with the upper gear of the double-layered spur gear. The upper layer is a "Y" shaped triangular rib that is set in the "Y" shaped groove of the roller body and passes through a long steel needle together with the roller body, and is set in the pump bottom shell.

[0016] The roller is cylindrical with cylindrical steps at both ends, and the roller is disposed in a semi-circular groove in the main body of the roller.

[0017] A flexible hose, which is fitted onto a roller inside the roller body;

[0018] The adapter is L-shaped with pagoda-shaped steps at both ends. The adapter is located in the semi-circular groove between the middle frame and the pump cover. One end of the adapter is connected to the hose inside the pump, and the other end is connected to the target container pipe.

[0019] The pump cover has a semi-circular groove at one end, with ribs in the groove. The pump cover covers the top of the middle frame and is used to fix the adapter and hose.

[0020] In the miniature peristaltic pump described in this utility model, a through hole is provided on one side of the pump bottom shell, through which the motor passes and extends into the base; the main gear meshes with the disc gear, driving the double-layer spur gear and the Y-shaped gear, and finally driving the roller body to rotate. The roller body is set inside the pump bottom shell, a steel needle passes through the roller body, the roller shaft is set on the roller body, and the hose is sleeved on the roller shaft; one end of the adapter is connected to the hose and installed between the middle frame and the pump top cover. The roller shaft squeezes the hose to form a sealed vacuum pumping environment.

[0021] Compared with existing technologies, an adapter has been added. One end of the adapter is inside the pump, and the other end can be connected to the target body, thereby solving the problem of no liquid being dispensed when the angle between the external hose and the pump outlet is less than 90 degrees. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0023] Figure 1 This is a perspective view of an embodiment of a miniature peristaltic pump provided by this utility model;

[0024] Figure 2 This is a perspective view of another embodiment of the miniature peristaltic pump provided by this utility model; Detailed Implementation

[0025] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] like Figures 1-2 As shown, in the first embodiment of a miniature peristaltic pump of this utility model, the miniature peristaltic pump includes a motor 101, a main gear 102, a pump base 103, a disc gear 104, a double-layer spur gear 105, a short steel needle 106, a middle frame 107, a Y-shaped gear 108, a roller body 109, rollers 110 (110a, 110b, 110c), a long steel needle 111, a hose 112, an adapter 113 (113a, 113b), and a pump cover 114.

[0027] The pump base shell 103 is formed as a hollow structure. A through hole is provided on one side of the pump base shell 103 to facilitate the installation of the motor 101. Two steel needle holes are provided inside the pump base shell 103.

[0028] The motor 101 has its shaft passing through the through hole and extending into the pump base 103;

[0029] The main gear 102 is a bevel gear and is mounted on the shaft of the motor 101;

[0030] The disc gear 104 is double-layered, with the lower bevel gear meshing with the main gear 102 and the upper gear being a spur gear.

[0031] The long steel needle 111 is inserted into the steel needle hole on the side of the pump bottom housing 103 near the motor.

[0032] The short steel needle 106 is inserted into another steel needle hole in the pump bottom housing 103;

[0033] The double-layer spur gear 105 is double-layered with a through hole in the middle, which is set on the short steel needle 106. The bottom gear meshes with the upper gear of the disc gear 104.

[0034] The middle frame 107 is formed as a hollow structure. One end of the middle frame 107 is provided with a semi-circular groove and a rib is provided in the groove. The other end is provided with a hook structure.

[0035] The roller body 109 is triangular prism with a through hole in the middle and a "Y" shaped groove at the bottom. The three corners of the roller body 109 are respectively provided with semi-circular grooves. The through hole of the roller body 109 passes through the long steel needle 111 and is set in the pump bottom shell.

[0036] The Y-shaped gear 108 is double-layered with a through hole in the middle. The bottom layer is a circular spur gear that meshes with the upper gear of the double-layered spur gear 105. The upper layer is a Y-shaped triangular rib that is set in the Y-shaped groove of the roller body 109 and passes through the long steel needle 111 together with the roller body 109 and is set in the pump bottom shell 103.

[0037] The rollers 110 (110a, 110b, 110c) are cylindrical with cylindrical steps at both ends. The rollers 110 (110a, 110b, 110c) are arranged in the semi-circular groove of the roller body 109.

[0038] The hose 112 is sleeved on the rollers 110 (110a, 110b, 110c) inside the roller body 109;

[0039] The adapter 113 (113a, 113b) is L-shaped and has pagoda-shaped steps at both ends. The adapter 113 (113a, 113b) is located in the semi-circular groove between the middle frame 107 and the pump cover 114. One end of the adapter 113 (113a, 113b) is connected to the hose 112 inside the pump, and the other end is connected to the target container pipe.

[0040] The pump cover 114 has a semi-circular groove at one end, and a rib is provided in the groove. The pump cover 114 covers the top of the middle frame 107 and is used to fix the adapter 113 (113a, 113b) and the hose 112.

[0041] In the micro peristaltic pump described in this utility model, a through hole is provided on one side of the pump bottom shell, through which the motor passes and extends into the base; the main gear meshes with the disc gear, driving the double-layer spur gear and the Y-shaped gear, and finally driving the roller body to rotate. The roller body is set inside the pump bottom shell, the steel needle passes through the roller body, the roller shaft is set on the roller body, and the hose is sleeved on the roller shaft; one end of the adapter is connected to the hose and installed between the middle frame and the pump top cover. The roller squeezes the hose to form a sealed vacuum pumping environment.

[0042] Compared with existing technologies, an adapter has been added. One end of the adapter is inside the pump, and the other end can be connected to the target body, thereby solving the problem of no liquid being dispensed when the angle between the external hose and the pump outlet is less than 90 degrees.

[0043] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A miniature peristaltic pump, characterized in that, have: The pump base shell is formed into a hollow structure. A through hole is provided on one side of the pump base shell to facilitate the installation of the motor. Two steel needle holes are provided inside the pump base shell. An electric motor, the shaft of which passes through the through hole and extends into the pump base housing; The main gear, which is a bevel gear, is mounted on the motor shaft; Disc gear, which is double-layered, with the lower bevel gear meshing with the main gear and the upper gear being a spur gear; A long steel needle is inserted into a steel needle hole on the side of the pump base housing near the motor. A short steel needle, which is inserted into another steel needle hole in the pump bottom housing; A double-layer spur gear, which is double-layered with a through hole in the middle, is mounted on a short steel needle. The bottom gear meshes with the upper gear of the disc-shaped gear. The middle frame is formed as a hollow structure. One end of the middle frame is provided with a semi-circular groove with a rib at the groove, and the other end is provided with a hook structure. The roller body is triangular prism with a through hole in the middle and a "Y"-shaped groove at the bottom. The three corners of the roller body are respectively provided with semi-circular grooves. The through hole of the roller body passes through a long steel needle and is set inside the pump bottom shell. The "Y" shaped gear is double-layered with a through hole in the middle. The bottom layer is a circular spur gear that meshes with the upper gear of the double-layered spur gear. The upper layer is a "Y" shaped triangular rib that is set in the "Y" shaped groove of the roller body and passes through a long steel needle together with the roller body, and is set in the pump bottom shell. The roller is cylindrical with cylindrical steps at both ends, and the roller is disposed in a semi-circular groove in the main body of the roller. A flexible hose, which is fitted onto a roller inside the roller body; The adapter is L-shaped with pagoda-shaped steps at both ends. The adapter is located in the semi-circular groove between the middle frame and the pump cover. One end of the adapter is connected to the hose inside the pump, and the other end is connected to the target container pipe. The pump cover has a semi-circular groove at one end, with ribs in the groove. The pump cover covers the top of the middle frame and is used to fix the adapter and hose. Compared with existing technologies, an adapter has been added. One end of the adapter is inside the pump, and the other end can be connected to the target body, thereby solving the problem of no liquid being dispensed when the angle between the external hose and the pump outlet is less than 90 degrees.

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