Peristaltic pump

Abstract

The utility model relates to the technical field of peristaltic pumps, in particular to a peristaltic pump which comprises a pump body and a gear motor, the pump body comprises an upper cover, a pump assembly and a base, the pump assembly is arranged on the base in a penetrating mode and connected to the base in a sliding mode, the upper cover wraps the top of the base and is provided with a locking part relative to the base, and the gear motor is arranged on the pump body. The base is provided with a matching block opposite to the locking parts, the locking parts are connected to the matching block in a clamped mode, the number of the locking parts is multiple, and the multiple sets of locking parts wrap the pump assembly; the gear motor is arranged on the end face, away from the upper cover, of the base in a penetrating mode and connected to the pump assembly in a driving mode, the side edge of the gear motor is provided with a matching part, the base is provided with an inverted buckling position opposite to the matching part, and the inverted buckling position is connected to the matching part in a clamped mode. The utility model aims to enable the peristaltic pump to work more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of peristaltic pumps, in particular to a peristaltic pump. Background Art

[0002] Peristaltic pump is a new type of fluid delivery pump after rotor pump, centrifugal pump, diaphragm pump, etc. Peristaltic pump is like squeezing a hose full of fluid with fingers. As the fingers slide forward, negative pressure is formed in the tube, and the fluid in the tube moves forward. Compared with ordinary fluid delivery pumps, peristaltic pump has the characteristics of fluid isolation in the pump tube, quick replacement of pump tube, low maintenance cost, etc. It is being widely promoted and applied in various industries such as medical care, medicine, food, beverage, chemical industry, etc.

[0003] In the relevant patents, the pump head and pump body of the existing peristaltic pump are fixed with bolts. However, if the quality of the bolts used is average, there is a risk that the bolts will loosen due to the vibration generated when the peristaltic pump is working, causing the peristaltic pump to be unable to work stably, and the use of special anti-loosening nuts will increase costs. Utility Model Content

[0004] The main purpose of the utility model is to provide a peristaltic pump, aiming to enable the peristaltic pump to work more stably.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a peristaltic pump, which is characterized by comprising a pump body and a reduction motor:

[0006] The pump body includes an upper cover, a pump assembly and a base, wherein the pump assembly is inserted through the base and slidably connected to the base, the upper cover is wrapped around the top of the base and is provided with a locking portion relative to the base, the base is provided with a matching block relative to the locking portion, the locking portion is clamped to the matching block, the locking portion is provided with a plurality of groups, and the plurality of groups of locking portions are wrapped around the pump assembly; and

[0007] The reduction motor is passed through the end surface of the base away from the upper cover and is drivingly connected to the pump assembly. A matching portion is provided on the side edge of the reduction motor. The base is provided with an inverted position relative to the matching portion, and the inverted position is clamped in the matching portion.

[0008] In one embodiment of the present application, the pump body further includes a protection end and a working end:

[0009] The protection end is wrapped around the pump assembly, and the protection end is provided with a plurality of groups of locking parts, and the plurality of groups of locking parts are evenly spaced; and

[0010] The working end is connected to the protecting end, the upper cover and the base are provided with a limiting portion facing the working end, and the pump assembly is passed through the limiting portion.

[0011] In one embodiment of the present application, the locking portion includes a locking portion and a limiting portion:

[0012] The locking part is connected to the protecting end, and a plurality of locking parts are provided, and the plurality of locking parts are wrapped around the protecting end; and

[0013] The limiting portion is connected to the working end and is arranged facing the pump assembly, and the pump assembly is clamped on the limiting portion.

[0014] In one embodiment of the present application, the locking portion is provided with a limiting groove, the limiting groove is wrapped around the periphery of the mating block, the mating block is clamped in the limiting groove, and an auxiliary portion is provided at one end of the locking portion away from the upper cover, and the distance between the bottom surface of the auxiliary portion and the base gradually increases along the direction from the upper cover to the reduction motor.

[0015] In one embodiment of the present application, the upper cover is provided with a rotor positioning shaft facing the pump assembly, the pump assembly is rotatably connected to the rotor positioning shaft, and the end of the pump assembly facing the upper cover is provided with a pressure relief portion, the pressure relief portion is sleeved on the rotor positioning shaft, and the distance between the top of the pressure relief portion and the upper cover gradually increases along the direction in which the pump assembly approaches the rotor positioning shaft.

[0016] In one embodiment of the present application, a mounting plate is passed through the base, a protective portion is provided at one end of the mounting plate close to the inner wall of the base, a rotation groove is coaxially opened on the mounting plate along the direction of the rotor positioning axis, the protective portion is wrapped around the rotation groove, the pump assembly is rotatably connected to the rotation groove, and a pressure relief groove is opened at the end of the mounting plate close to the base, and the pressure relief grooves are provided in multiple groups, and the multiple groups of pressure relief grooves are arranged relatively to each other.

[0017] In one embodiment of the present application, the reduction motor includes a reducer and a motor, the reducer is driven and connected to the pump assembly, the mating portion is arranged between the reducer and the motor, the inverted position is wrapped around the motor, and the inverted position is arranged in at least two groups relatively to each other, and the base is provided with a protective block facing the motor, the protective block is wrapped around the motor, and the protective block is arranged between adjacent inverted positions.

[0018] The technical solution of the utility model adopts the method of dividing the pump body into an upper cover, a pump assembly and a base. The pump assembly is composed of a hose, a wheel frame, a rotating rod and a roller. The hose is inserted into the base, the roller is connected to the rotating rod, and the rotating rod is rotatably connected to the wheel frame. The base is provided with a mounting plate relative to the wheel frame, the bottom edge of the wheel frame is slidably connected to the mounting plate, and the roller abuts against the hose during the rotation of the wheel frame. The upper cover is provided with a locking portion facing the base, and the base is provided with a matching block. The locking portion can be a structure of an inverted position, and the matching block is a triangular structure. By pressing down the upper cover, the locking portion can be snapped into the matching block to complete the locking work. Because the inverted position generally does not restrict other places except the vertical direction, the structure of the pump body cannot be cylindrical, otherwise, the locking portion will lose its effect by rotating the upper cover. When the structure of the pump body is not cylindrical and the locking portion After multiple groups are set, the upper cover cannot rotate, and the upper cover can be quickly locked and is not easy to loosen. At the same time, it is convenient for subsequent maintenance and can effectively make the operation of the pump body more stable. The peristaltic pump is also provided with a reduction motor, which is used to drive the pump assembly. The driving end of the reduction motor can be designed as a multi-gear shaft structure, and the wheel frame is provided with a matching connecting groove facing the structure. The shape of the multi-gear shaft structure and the connecting groove can make the two connected more tightly, and the pump body can be driven more stably. The reduction motor can be passed through the base to play a protective role. By arranging a matching part on the side wall of the reduction motor, the matching part can be a locking groove structure, and by arranging an inverted position on the base and locking the matching part through the inverted position, the entire device can be quickly locked, which can also facilitate subsequent maintenance and effectively improve the stability of the peristaltic pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a structural schematic diagram of an embodiment of a peristaltic pump of the utility model;

[0021] Figure 2 It is a cross-sectional view of an embodiment of a peristaltic pump of the utility model;

[0022] Figure 3 This is a schematic diagram of the base structure of a peristaltic pump according to an embodiment of the utility model.

[0023] Description of Figure Numbers:

[0024] 1. Pump body; 2. Upper cover; 21. Rotor positioning shaft; 22. Limiting part; 3. Locking part; 31. Limiting groove; 32. Auxiliary part; 33. Locking part; 34. Limiting part; 4. Pump assembly; 41. Pressure relief part; 5. Base; 51. Matching block; 52. Inverted position; 53. Protection block; 54. Mounting plate; 55. Protection part; 56. Rotating groove; 57. Pressure relief groove; 6. Protection end; 7. Working end; 8. Reducer motor; 81. Reducer; 82. Motor; 83. Matching part.

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] Reference Figures 1 to 3 In one embodiment of the utility model, a peristaltic pump is proposed, characterized in that it includes a pump body 1 and a reduction motor 8. The pump body 1 includes an upper cover 2, a pump assembly 4 and a base 5. The pump assembly 4 is penetrated through the base 5 and slidably connected to the base 5. The upper cover 2 is wrapped around the top of the base 5, and a locking portion 3 is provided relative to the base 5. The base 5 is provided with a matching block 51 relative to the locking portion 3. The locking portion 3 is snapped into the matching block 51. The locking portion 3 is provided with multiple groups, and the multiple groups of locking portions 3 are wrapped around the pump assembly 4; the reduction motor 8 is penetrated through the end surface of the base 5 away from the upper cover 2, and is drivingly connected to the pump assembly 4. The side edge of the reduction motor 8 is provided with a matching portion 83. The base 5 is provided with an undercut position 52 relative to the matching portion 83, and the undercut position 52 is snapped into the matching portion 83.

[0028] In a peristaltic pump of the present application, the peristaltic pump includes a pump body 1 and a reduction motor 8 for driving. The pump body 1 is divided into an upper cover 2, a pump assembly 4 and a base 5. The pump assembly 4 is composed of a hose, a wheel frame, a rotating rod and a roller. The hose is passed through the base 5, the roller is connected to the rotating rod, and the rotating rod is rotatably connected to the wheel frame. The base 5 is provided with a mounting plate relative to the wheel frame, and the bottom edge of the wheel frame is slidably connected to the mounting plate. The roller abuts against the hose during the rotation of the wheel frame. The upper cover 2 is provided with a locking portion 3 facing the base 5, and the base 5 is equipped with a matching block 51. The locking portion 3 can be an inverted position 5. 2, and the matching block 51 is a triangular structure. By pressing down the upper cover 2, the locking portion 3 can be snapped into the matching block 51 to complete the locking work. Because the undercut position 52 generally does not restrict other places except the vertical direction, the structure of the pump body 1 cannot be cylindrical, otherwise, the locking portion 3 will lose its effect by rotating the upper cover 2. When the structure of the pump body 1 is not cylindrical and the locking portion 3 is arranged in multiple groups at intervals, the upper cover 2 cannot rotate, and the upper cover 2 can be quickly locked without being easily loosened. At the same time, it is convenient for subsequent maintenance and can effectively make the operation of the pump body 1 more stable.

[0029] Furthermore, the peristaltic pump is also provided with a reduction motor 8, which is used to drive the pump assembly 4. The driving end of the reduction motor 8 can be designed as a multi-gear shaft structure, and the wheel frame is provided with a matching connecting groove facing the structure. The shape of the multi-gear shaft structure and the connecting groove can make the two connected more tightly, and can drive the pump body 1 more stably. The reduction motor 8 can be inserted into the base 5 to play a protective role. By arranging a matching portion 83 on the side wall of the reduction motor 8, the matching portion 83 can be a locking groove structure. By arranging an inverted position 52 on the base 5 and locking the matching portion 83 through the inverted position 52, the entire device can be quickly locked, and subsequent maintenance can be convenient, which can effectively improve the stability of the peristaltic pump.

[0030] Combined with reference Figure 1 to Figure 2 In one embodiment of the present application, the pump body 1 also includes a protective end 6 and a working end 7. The protective end 6 is wrapped around the pump assembly 4. The protective end 6 is provided with multiple groups of locking portions 3, and the multiple groups of locking portions 3 are evenly spaced; the working end 7 is connected to the protective end 6, and the upper cover 2 and the base 5 are provided with a limiting portion 22 facing the working end 7, and the pump assembly 4 is penetrated by the limiting portion 22.

[0031] In a peristaltic pump of the present application, the pump body 1 also includes a protective end 6 and a working end 7. Because the pump assembly 4 includes a hose, the hose is inserted into the pump body 1, and its weak bending parts are completely surrounded by the upper cover 2 and the base 5 for protection, forming a protective end 6, and the liquid inlet end and the liquid outlet end are both arranged at the same end of the pump body 1, forming a working end 7 for liquid inlet and outlet. In this embodiment, the entire pump body 1 is a cylinder, which is D-shaped from the projection. The working end 7 is a vertical line segment position, and the working end 7 can be provided with multiple locking parts 3. Of course, only one set of locking parts 3 needs to be provided here to prevent the upper cover 2 from rotating. At the protective end 6, in order to make the locking tighter, multiple sets of locking parts 3 can be provided. The limiting part 22 is formed by the upper cover 2 and the base 5, and is used to clamp the hose so that the liquid can be transported stably.

[0032] Combined with reference Figure 1 In one embodiment of the present application, the locking portion 3 includes a locking portion 33 and a limiting portion 34. The locking portion 33 is connected to the protective end 6. The locking portion 33 is provided with a plurality of groups, and the plurality of groups of locking portions 33 are wrapped around the protective end 6. The limiting portion 34 is connected to the working end 7 and is arranged facing the pump assembly 4. The pump assembly 4 is clamped in the limiting portion 34.

[0033] In a peristaltic pump of the present application, the locking portion 3 includes a locking portion 33 and a limiting portion 34. The locking portion 33 is connected to the protective end 6 to prevent the upper cover 2 from loosening, and the limiting portion 34 is arranged at the working end 7 to prevent the upper cover 2 from loosening due to lateral rotation. In the present embodiment, the limiting portion 34 is located in the middle of the hose, which can further limit the upper cover 2.

[0034] Combined with reference Figures 1 to 3 In one embodiment of the present application, the locking portion 3 is provided with a limiting groove 31, the limiting groove 31 is wrapped around the periphery of the matching block 51, the matching block 51 is snapped into the limiting groove 31, and an auxiliary portion 32 is provided at one end of the locking portion 3 away from the upper cover 2, and the distance between the bottom surface of the auxiliary portion 32 and the base 5 gradually increases along the direction from the upper cover 2 to the reduction motor 8.

[0035] In a peristaltic pump of the present application, in order to further firmly snap-fit ​​on the mating block 51 and limit the rotation of the upper cover 2, the locking part 3 is structurally a snap-fit ​​structure, and the locking part 3 is provided with a limiting groove 31 for completely limiting the mating block 51, and the auxiliary part 32 is provided so that the upper cover 2 can be directly snap-fitted by pressing, which can effectively improve the installation efficiency.

[0036] Combined with reference Figure 2In one embodiment of the present application, the upper cover 2 is provided with a rotor positioning shaft 21 facing the pump assembly 4, and the pump assembly 4 is rotatably connected to the rotor positioning shaft 21. A pressure relief portion 41 is provided at one end of the pump assembly 4 facing the upper cover 2, and the pressure relief portion 41 is sleeved on the rotor positioning shaft 21. The distance between the top of the pressure relief portion 41 and the upper cover 2 gradually increases along the direction in which the pump assembly 4 approaches the rotor positioning shaft 21.

[0037] In a peristaltic pump of the present application, an upper cover 2 is provided with a rotor positioning shaft 21 facing the pump assembly 4, which can act as an axis. The wheel frame is passed through the rotor positioning shaft 21 so that the pump assembly 4 can be more easily ensured to be centered when it rotates and is squeezed by the base 5, thereby improving the working stability of the pump body 1. A pressure reducing portion 41 is provided at one end of the wheel frame facing the upper cover 2. By opening a conical cavity, the stress on the rotor positioning shaft 21 can be reduced, thereby improving the service life of the shaft.

[0038] Combined with reference Figure 3 In one embodiment of the present application, a mounting plate 54 is penetrated by the base 5, a protective portion 55 is provided at one end of the mounting plate 54 close to the inner wall of the base 5, a rotation groove 56 is coaxially opened on the mounting plate 54 along the direction of the rotor positioning axis 21, the protective portion 55 is wrapped around the rotation groove 56, the pump assembly 4 is rotatably connected to the rotation groove 56, and a pressure relief groove 57 is opened at the end of the mounting plate 54 close to the base 5, and the pressure relief grooves 57 are opened in multiple groups, and the multiple groups of pressure relief grooves 57 are arranged relatively.

[0039] In a peristaltic pump of the present application, a mounting plate 54 is passed through the base 5, and a protective portion 55 is provided in the mounting plate 54. The protective portion 55 is on the periphery of the mounting plate 54 and surrounds the middle rotating groove 56, which can be used to protect the wheel frame to avoid structural damage. The rotating groove 56, the rotor positioning shaft 21 and the wheel frame are coaxially arranged, and the wheel frame is passed through the rotating groove 56, which can make the overall structure more stable. The pressure relief groove 57 surrounds the rotating groove 56, and in the present embodiment, the pressure relief groove 57 can be connected to the protective portion 55, which can reduce the pressure on the pump assembly 4, increase the service life of the equipment, and improve the user experience.

[0040] Combined with reference Figure 1 to Figure 2 In one embodiment of the present application, the reduction motor 8 includes a reducer 81 and a motor 82, the reducer 81 is drivingly connected to the pump assembly 4, the mating portion 83 is arranged between the reducer 81 and the motor 82, the inverted position 52 is wrapped around the motor 82, and the inverted position 52 is arranged in at least two groups relatively to each other, and the base 5 is provided with a protective block 53 facing the motor 82, the protective block 53 is wrapped around the motor 82, and the protective block 53 is arranged between adjacent inverted positions 52.

[0041] In a peristaltic pump of the present application, the reduction motor 8 includes a reduction gear 81 and a motor 82. The motor 82 drives the reduction gear 81, and the reduction gear 81 drives the wheel frame. The setting of the reduction gear 81 can well protect the motor 82, that is, the motor structure, can improve the stability of the motor operation, and make the output power of the motor more controllable. The matching portion 83 is a card slot formed at the connection between the reduction gear 81 and the motor 82. When the inverted position 52 is engaged with the matching portion 83, the inverted position 52 can protect the connection between the reduction gear 81 and the motor 82. Similarly, in adjacent The purpose of directly setting the protection block 53 at the undercut position 52 is also to protect the connection position of the reducer 81 and the motor 82 to avoid structural damage. A rotating shaft is provided between the reducer 81 and the motor 82, and gears are provided on the periphery of the rotating shaft. A planetary gear set is provided inside the reducer 81 and wrapped around the rotating shaft. The gear radius of the planetary gear set is larger than the rotating shaft and is driven and connected to the rotating shaft, so that a first-stage reduction can be performed, and a gear with a smaller radius is coaxially provided on the gear. The pinion drive structure can achieve a second-stage reduction, which can effectively protect the pump body 1 and make the peristaltic pump work more stably.

[0042] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0043] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A peristaltic pump, characterized in that: include: A pump body, wherein the pump body comprises an upper cover, a pump assembly and a base, wherein the pump assembly is inserted through the base and slidably connected to the base, wherein the upper cover is wrapped around the top of the base and provided with a locking portion relative to the base, wherein the base is provided with a matching block relative to the locking portion, wherein the locking portion is clamped to the matching block, wherein the locking portion is provided with a plurality of groups, and the plurality of groups of the locking portions are wrapped around the pump assembly; and The reduction motor is passed through the end surface of the base away from the upper cover and is drivingly connected to the pump assembly. A mating portion is provided on the side edge of the reduction motor, and an inverted position is provided on the base relative to the mating portion, and the inverted position is snapped into the mating portion.

2. A peristaltic pump according to claim 1, characterized in that: The pump body also includes: A protection end, the protection end is wrapped around the pump assembly, the protection end is provided with a plurality of groups of locking parts, and the plurality of groups of locking parts are evenly spaced; and A working end is connected to the protective end, the upper cover and the base are provided with a limiting portion facing the working end, and the pump assembly is passed through the limiting portion.

3. A peristaltic pump according to claim 2, characterized in that: The locking portion comprises: A locking part, the locking part is connected to the protecting end, the locking part is provided in a plurality of groups, and the plurality of groups of the locking parts are wrapped around the protecting end; and A limiting portion is connected to the working end and is arranged facing the pump assembly, and the pump assembly is clamped on the limiting portion.

4. A peristaltic pump according to claim 3, characterized in that: The locking portion is provided with a limiting groove, the limiting groove is surrounded by the periphery of the matching block, the matching block is clamped in the limiting groove, and an auxiliary portion is provided at one end of the locking portion away from the upper cover, and the distance between the bottom surface of the auxiliary portion and the base gradually increases along the direction from the upper cover to the reduction motor.

5. A peristaltic pump according to any one of claims 1 to 4, characterized in that: The upper cover is provided with a rotor positioning shaft facing the pump assembly, and the pump assembly is rotatably connected to the rotor positioning shaft. A pressure relief portion is provided at one end of the pump assembly facing the upper cover, and the pressure relief portion is sleeved on the rotor positioning shaft. The distance between the top of the pressure relief portion and the upper cover gradually increases along the direction in which the pump assembly approaches the rotor positioning shaft.

6. A peristaltic pump according to claim 5, characterized in that: A mounting plate is passed through the base, a protective portion is provided at one end of the mounting plate close to the inner wall of the base, a rotation groove is coaxially opened on the mounting plate along the direction of the rotor positioning axis, the protective portion is wrapped around the rotation groove, the pump assembly is rotatably connected to the rotation groove, a pressure relief groove is opened at the end of the mounting plate close to the base, and the pressure relief grooves are provided in multiple groups, and the multiple groups of pressure relief grooves are arranged relatively.

7. A peristaltic pump according to any one of claims 1 to 4, characterized in that: The reduction motor includes a reduction gear and a motor, the reduction gear is driven and connected to the pump assembly, the mating portion is arranged between the reduction gear and the motor, the inverted position is wrapped around the motor, and at least two groups of inverted positions are arranged relatively to each other, the base is provided with a protective block facing the motor, the protective block is wrapped around the motor, and the protective block is arranged between adjacent inverted positions.

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