CN212406958U - Synchronous belt constant delivery pump - Google Patents

Abstract

The utility model discloses a synchronous belt constant delivery pump, which comprises a motor and a shell; the shell is internally provided with a left cavity, a right cavity, a first flow groove, a second flow groove and a plugging groove; a driving wheel and a left tensioning wheel are arranged in the left cavity, and a driven wheel and a right tensioning wheel are arranged in the right cavity; an output shaft of the motor is connected with a shaft of the driving wheel, the driving wheel is connected with the driven wheel through a driving synchronous belt, and the driving synchronous belt penetrates through the first flow groove and the plugging groove and is connected with the first flow groove and the plugging groove in a sealing mode; the left tensioning wheel and the right tensioning wheel are connected through a driven synchronous belt, the driven synchronous belt penetrates through the second flow groove and the plugging groove, the driven synchronous belt is connected with the second flow groove in a sealing mode, the driven synchronous belt is meshed with the driving synchronous belt, and the meshed part of the driven synchronous belt is connected with the plugging groove in a sealing mode; the right chamber is communicated with an inlet, and the left chamber is communicated with an outlet. The product has the characteristics of stable flow, long service life, no leakage, high precision, acid and alkali resistance and self lubrication.

Description

Synchronous belt constant delivery pump

Technical Field

The utility model relates to a constant delivery pump especially relates to a hold-in range constant delivery pump.

Background

The quantitative pump is a special volumetric pump for conveying liquid, especially corrosive liquid, and features that its output flow is not changed. At present, most of the quantitative pumps on the market are injection pumps, peristaltic pumps and gear pumps.

The injection pump has the problems of intermittent flow, rapid abrasion of an injection unit, high cost, complex injection and sample injection pipelines and difficult pipeline cleaning, and bubbles introduced into the injection and sample injection system are generally difficult to completely remove if the bubbles are sucked and remain in a pipe, so that sample injection is inaccurate, and particularly the bubbles are easy to be stored at the positions of a multi-position valve and a sample storage ring; the gear pump also has the problem of micro leakage, so that an error is generated in the metering pump; the peristaltic pump also has the problems of short service life, serious flow pulsation and unstable system pressure. The constant delivery pump on the market generally has the short-lived, and the flow is unstable, and the eccentric bearing of installing of constant delivery pump is bad easily, and the noisy scheduling problem of pump is big moreover. Therefore, a quantitative pump having excellent performance is desired.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a synchronous belt quantitative pump.

In order to solve the technical problem, the utility model discloses a technical scheme is: a synchronous belt constant delivery pump comprises a motor and a shell; the shell is internally provided with a left cavity, a right cavity, a first flow groove, a second flow groove and a plugging groove, wherein the first flow groove, the second flow groove and the plugging groove are communicated with the left cavity and the right cavity;

a driving wheel and a left tensioning wheel are arranged in the left cavity, and a driven wheel and a right tensioning wheel are arranged in the right cavity;

an output shaft of the motor is connected with a shaft of the driving wheel, the driving wheel is connected with the driven wheel through a driving synchronous belt, and the driving synchronous belt penetrates through the first flow groove and the plugging groove and is connected with the first flow groove and the plugging groove in a sealing mode; the left tensioning wheel and the right tensioning wheel are connected through a driven synchronous belt, the driven synchronous belt penetrates through the second flow groove and the plugging groove, the driven synchronous belt is connected with the second flow groove in a sealing mode, the driven synchronous belt is meshed with the driving synchronous belt, and the meshed part of the driven synchronous belt is connected with the plugging groove in a sealing mode;

the right chamber is communicated with an inlet, and the left chamber is communicated with an outlet.

Further, the gears of the driving synchronous belt are respectively meshed with the gears of the driving wheel and the driven wheel.

Furthermore, shafts of the driving wheel, the left tension wheel, the driven wheel and the right tension wheel are all made of zirconium dioxide ceramics.

Further, the motor is a stepping motor.

The utility model discloses a synchronous belt dosing pump, wherein a shell is formed by high-wear-resistance self-lubricating polytetrafluoroethylene plastic and carbon fiber in a die-casting manner, and a driving synchronous belt and a driven synchronous belt are made of elastic polyurethane materials and can be effectively sealed with the shell in a first flow groove, a second flow groove and a plugging groove, so that once a calibration coefficient is stable for a long time, the flow is stable, the service life is long, no leakage exists, the precision is high, and the requirement on the processing precision is not high; the synchronous belt quantitative pump has no metal parts inside, has the characteristics of acid and alkali resistance and self lubrication, and can be widely applied to occasions needing accurate quantitative supply of various fluids, such as petrochemical industry, fine chemical industry, medicines and foods.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of fig. 1.

In the figure: 1. a housing; 2. a left chamber; 3. a right chamber; 4. a first flow channel; 5. a second flow channel; 6. plugging the groove; 7. a drive wheel; 8. a left tensioning wheel; 9. a driven wheel; 10. a right tension pulley; 11. a driving synchronous belt; 12. a driven synchronous belt; 13. an inlet; 14. an outlet; 15. an electric motor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The synchronous belt quantitative pump shown in fig. 1 and 2 comprises a motor 15, preferably, the motor 15 adopts a commercially available stepping motor as power supply equipment, and further comprises a shell 1, preferably, the shell 1 is made of polytetrafluoroethylene plastic and carbon fiber materials in a die-casting manner, wherein the polytetrafluoroethylene plastic has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, is almost insoluble in all solvents, and meanwhile, the polytetrafluoroethylene plastic has the characteristics of high temperature resistance, extremely low friction coefficient and self-lubricating property, and the carbon fiber materials are special fibers consisting of carbon elements, have the characteristic of friction resistance, and ensure the long service life and the wear resistance of the shell 1; a left chamber 2 and a right chamber 3 are arranged in the shell 1, the left chamber 2 and the right chamber 3 are provided with a first flow groove 4, a second flow groove 5 and a blocking groove 6, the right chamber 3 is communicated with an inlet 13, and the left chamber 2 is communicated with an outlet 14;

a driving wheel 7 and a left tensioning wheel 8 are arranged in the left chamber 2, and a driven wheel 9 and a right tensioning wheel 10 are arranged in the right chamber 3; the driving wheel 7, the left tension wheel 8, the driven wheel 9 and the right tension wheel 10 are all made of polyamide fibers, the polyamide fibers are made of synthetic fibers, the most outstanding advantage is that the abrasion resistance is higher than that of all other fibers, shafts of the driving wheel 7, the left tension wheel 8, the driven wheel 9 and the right tension wheel 10 are all made of zirconium dioxide ceramics, and the zirconium dioxide ceramics are high in hardness, high in toughness, high in bending strength and high in abrasion resistance and also have excellent heat insulation performance; the driving wheel 7 is connected with the driven wheel 9 through a driving synchronous belt 11, and the driving synchronous belt 11 penetrates through the first flow groove 4 and the plugging groove 6 and is connected with the first flow groove 4 and the plugging groove 6 in a sealing mode; the left tensioning wheel 8 and the right tensioning wheel 10 are connected through a driven synchronous belt 12, the driven synchronous belt 12 penetrates through the second flow slot 5 and the plugging slot 6, the driven synchronous belt 12 is connected with the second flow slot 5 in a sealing mode, the driven synchronous belt 12 is meshed with the driving synchronous belt 11, and the meshed part of the driven synchronous belt 12 is connected with the plugging slot 6 in a sealing mode; the gears of the driving synchronous belt 11 are respectively meshed with the gears of the driving wheel 7 and the driven wheel 9; initiative hold-in range 11 and driven hold-in range 12 all adopt the polyurethane material to make, the polyurethane material is a macromolecular material, the wearability of initiative hold-in range 11 and the driven hold-in range 12 that utilizes the polyurethane material to make is strong, anti-shear force is big, simultaneously the shock attenuation, the elastic force of buffering, thereby guarantee initiative hold-in range 11 and first flow groove 4 and shutoff groove 6, the leakproofness between driven hold-in range 12 and the second flow groove 5, the elastic force has also guaranteed initiative hold-in range 11 and driven hold-in range 12's motion also not receive the hindrance because of the leakproofness causes simultaneously.

An output shaft of the motor 15 is connected with a shaft of the driving wheel 7, and when the synchronous belt quantitative pump works, liquid is firstly injected into the right cavity 3 from the inlet 13 to fill the whole right cavity 3; when the synchronous belt quantitative pump works, the right chamber 3 is communicated with an inlet 13, liquid is injected into the right chamber 3 from the inlet 13, and the whole right chamber 3 is filled with the liquid; then starting the motor 15, the motor 15 converts the electric energy into the mechanical energy of rotation, i.e. the rotational force, the rotational force drives the driving wheel 7 to rotate, the driving synchronous belt 11 connected with the driving wheel 7 is driven by the driving wheel 7 to run anticlockwise, the driving synchronous belt 11 drives the driven synchronous belt 12 meshed with the driving synchronous belt to run anticlockwise, therefore, when the driving synchronous belt 11 runs at the part in the right chamber 3 and passes through the first flow slot 4, the gear gap of the liquid on the driving synchronous belt 11 is driven, and the liquid continuously enters the left chamber 2 through the first flow slot 4; when the driven synchronous belt 12 runs in the right chamber 3 and passes through the second flow slot 5, the gear clearance of the liquid on the driven synchronous belt 12 is driven, so that the liquid continuously enters the left chamber 2 through the second flow slot 5; meanwhile, the driving synchronous belt 11 and the driven synchronous belt 12 in the left chamber 2 are meshed together to enter the plugging groove 6, and no gap exists in the plugging groove 6, so that liquid is plugged in the left chamber 2; finally, the liquid is fully collected in the left chamber 2 and discharged from the outlet 14, and the operation is circulated, in the whole process, the liquid is enabled to uniformly flow from the right chamber 3 to the left chamber 2 in the driving synchronous belt 11 and the driven synchronous belt 12 by controlling the rotating speed of the motor 15, the uniform self-priming capability is generated, and the stability of the liquid flow is ensured.

The utility model discloses a synchronous belt dosing pump, the casing adopts high wear-resisting, self-lubricating polytetrafluoroethylene plastics and carbon fiber die-casting shaping, and initiative synchronous belt and driven synchronous belt all adopt the polyurethane material that has elasticity, can effectively seal with the casing in first flow groove, second flow groove, shutoff groove, so once the calibration coefficient is stable flow for a long time, longe-lived and leak-free, the precision is high, and is not high to the machining precision requirement; the synchronous belt quantitative pump has no metal parts inside, has the characteristics of acid and alkali resistance and self lubrication, and can be widely applied to occasions needing accurate quantitative supply of various fluids, such as petrochemical industry, fine chemical industry, medicines and foods.

The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.

Claims (4)

1. The utility model provides a hold-in range dosing pump, it includes motor (15), its characterized in that: it also comprises a housing (1); the shell (1) is internally provided with a left chamber (2), a right chamber (3), a first flow groove (4), a second flow groove (5) and a blocking groove (6) which are communicated with the left chamber (2) and the right chamber (3);

a driving wheel (7) and a left tensioning wheel (8) are arranged in the left chamber (2), and a driven wheel (9) and a right tensioning wheel (10) are arranged in the right chamber (3);

an output shaft of the motor (15) is connected with a shaft of the driving wheel (7), the driving wheel (7) is connected with the driven wheel (9) through a driving synchronous belt (11), and the driving synchronous belt (11) penetrates through the first flow tank (4) and the plugging tank (6) and is in sealing connection with the first flow tank (4) and the plugging tank (6); the left tensioning wheel (8) is connected with the right tensioning wheel (10) through a driven synchronous belt (12), the driven synchronous belt (12) penetrates through the second flow groove (5) and the plugging groove (6), the driven synchronous belt (12) is in sealing connection with the second flow groove (5), the driven synchronous belt (12) is meshed with the driving synchronous belt (11), and the meshed part is in sealing connection with the plugging groove (6);

the right chamber (3) is communicated with an inlet (13), and the left chamber (2) is communicated with an outlet (14).

2. The synchronous belt dosing pump of claim 1, wherein: and the gears of the driving synchronous belt (11) are respectively meshed with the gears of the driving wheel (7) and the driven wheel (9).

3. The synchronous belt dosing pump of claim 1, wherein: the shafts of the driving wheel (7), the left tension wheel (8), the driven wheel (9) and the right tension wheel (10) are all made of zirconium dioxide ceramics.

4. The synchronous belt dosing pump of claim 1, wherein: the motor (15) adopts a stepping motor.

Images