CN106704156A - Conveying pump capable of controlling flow of multipath coaxial fluid - Google Patents

Abstract

This patent discloses a delivery pump for controlling multi-channel coaxial fluid flow, including a base, a main shaft, a rolling bearing, a planetary shaft, a silicone hose, a pump head and a spring; the base is provided with a speed-regulating motor, a gear reducer and a bracket, The speed-regulating motor and the gear reducer are respectively equipped with pulleys, and the belts are sleeved on the two pulleys; the main shaft is connected to the bracket through rolling bearings, the main shaft is provided with a flange, and the planetary shaft is connected to the flange hole through rolling bearings; The silicone hose passes through the base, and the middle part of the silicone hose is located between the pump head and the planetary shaft. The spring is set in the pump head to adjust the pressure of the pump head. The end of each planetary shaft near the pulley is provided with a limit block; A number of limiting slots are provided on the circumferential surface of each planetary shaft, and the number of limiting slots on the planetary shaft decreases gradually in the clockwise direction of the flange. This solution mainly solves the problems of cumbersome and labor-intensive replacement of flanges when controlling the supply of different fluids.

Description

A delivery pump for controlling multi-channel coaxial fluid flow

technical field

The invention belongs to the field of pumps with electric drive.

Background technique

At present, the solution for multi-channel long-term equal-volume fluid delivery for equipment is to use a single-channel multi-pump head in series for multi-channel supply, but this supply method has many disadvantages: each channel needs to adjust the flow rate separately to achieve flow consistency comparison Difficult; after connecting multiple pump heads in series, the equipment has large volume, high cost, low reliability, and the maximum number of supply channels is very limited; the structure of multiple pump heads in series is complicated, the range of flow change is small, and micro supply cannot be realized, and the scope of use is limited. Big restrictions.

In order to solve the above problems, the patent number CN201210366254.6 provides a multi-channel coaxial fluid delivery pump, including pump head, pulley, flange, bracket, planetary shaft, main shaft, belt, gear reducer, speed regulating motor , spring, base and silicone hose; the speed regulating motor is connected with the gear reducer, the two are fixed on the base, the two pulleys are respectively fixed on the reducer and the main shaft, the belt connects the two pulleys, and the planetary shaft passes through the rolling bearing It is connected to the flange hole, the flange is connected to the main shaft through a pin key, the main shaft is connected to the bracket and the base through a rolling bearing, multiple silicone hoses pass through and are fixed on the base, the middle section of the silicone hose is placed between the pump head and the planetary shaft, A spring is placed in the pump head to adjust the pump head pressure.

Among them, the supply of fluid flow can be controlled by reducing the density of the planetary shaft; the current means of increasing the density of the planetary shaft is mainly achieved by manually replacing the flange (that is, replacing the flange with more holes). However, the manual replacement of the flange is not only cumbersome to operate, but also labor-intensive.

Contents of the invention

The present invention intends to provide a conveying pump for controlling multi-channel coaxial fluid flow, so as to solve the problems of cumbersome operation and high labor intensity in replacing flanges when controlling the supply of different fluids.

In order to achieve the above object, the basic scheme of the present invention is as follows: a delivery pump for controlling multi-channel coaxial fluid flow, including a base, a main shaft, a rolling bearing, a planetary shaft, a silicone hose, a pump head and a spring; A power mechanism and a bracket, the power mechanism includes a speed-regulating motor and a gear reducer fixedly connected to each other, the speed-regulating motor and the gear reducer are respectively provided with pulleys, and a belt is sleeved on the two pulleys; The main shaft is connected to the bracket through a rolling bearing, the main shaft is provided with a flange, and the planetary shaft is connected to the flange hole through a rolling bearing; the silicone hose passes through the base, and the middle part of the silicone hose is located between the pump head and the planetary shaft Between, the spring is arranged in the pump head to adjust the pressure of the pump head, and each planetary shaft is provided with a limit block at one end close to the pulley; each of the planetary shafts is provided with a number of limit blocks on the circumferential surface slots, and the number of limiting slots on the planetary shaft of the flange decreases gradually in the clockwise direction.

The principle of the basic scheme: during operation, use the spring in the pump head to adjust the pressure of the pump head, squeeze the silicone hose between the pump head and the planetary shaft; the speed regulating motor is connected with the gear reducer, and both are fixed on the On the base, the speed regulating motor drives the gear reducer to rotate, and the gear reducer drives the two pulleys to rotate through the belt; due to the rolling bearing, the pulley drives the main shaft on the bracket to rotate, and the main shaft drives the flange to revolve, so that the silicone hose and the planetary There is friction between the shafts, and the planetary shaft rotates under the action of friction due to the rolling bearing, so as to realize the same amount of fluid supply in multiple channels. When it is necessary to increase the fluid flow rate, drive each planet shaft to move away from the pulley, and use the limit block on the planet shaft to limit the position; according to the limit groove of the planet shaft, it is arranged in a straight trapezoidal shape, that is, The silicone hose between the pump head and the planet shaft is set obliquely, which lengthens the transmission path of the fluid.

Advantages of the basic scheme: 1. By driving the displacement of the planetary shaft and cooperating with the limit groove on the planetary shaft, the transmission path of the fluid can be lengthened, thereby increasing the flow rate of the fluid. Compared with the traditional manual replacement of the flange, the operation is more convenient. And reduce the labor intensity. 2. Using a single pump head to supply multiple channels of fluid, the flow of each channel can be adjusted at the same time to ensure that the fluid supply volume of each channel is the same.

Optimum solution 1: As a preferred solution of the basic solution, a limiting hole is provided at the end of each planetary shaft away from the pulley, and a limiting member is slidably connected to the limiting hole. Through the above setting, the limiting member is inserted into the limiting member. In the position hole, in order to realize the limit of the planetary shaft, avoid the displacement of the planetary shaft when it rotates, and then ensure the stability and uniformity of the fluid transmission in the silicone hose.

Preferred option 2: As a preferred option of preferred option 1, the limiting member is a bolt, and a nut is detachably connected to the bolt. Through the above arrangement, after the bolt passes through the limiting hole, the nut and the bottom thread of the bolt Connection, so as to realize the positioning of the bolts, effectively avoiding the possibility of the bolts falling when the planetary shaft rotates.

Preferred option 3: As a preferred option of preferred option 2, the limiting block is provided with a soft layer. Through the above configuration, since the soft layer has a certain degree of ductility, the soft layer will A certain deformation can occur, thereby enhancing the limiting effect on the planetary shaft; and the soft layer can also reduce the wear on the flange.

Description of drawings

Fig. 1 is a top view of an embodiment of a delivery pump for controlling multi-channel coaxial fluid flow in the present invention;

Fig. 2 is a front view of an embodiment of a delivery pump for controlling multi-channel coaxial fluid flow in the present invention;

Fig. 3 is a side view of an embodiment of a delivery pump for controlling multi-channel coaxial fluid flow in the present invention;

FIG. 4 is a cross-sectional view at point A in FIG. 3 .

detailed description

The present invention will be described in further detail below by means of specific embodiments:

The reference signs in the drawings of the specification include: base 1, main shaft 2, planetary shaft 3, silicone hose 4, pump head 5, spring 6, speed regulating motor 7, gear reducer 8, bracket 9, pulley 10, belt 11. Flange 12, limit block 13, limit groove 14, limit hole 15, rubber layer 16.

The embodiment is basically shown in Figure 1 and Figure 2: a delivery pump for controlling multi-channel coaxial fluid flow, including a base 1, a main shaft 2, a rolling bearing, a planetary shaft 3, a silicone hose 4, a pump head 5 and a spring 6 The base 1 is fixedly connected with a power mechanism and a bracket 9, the power mechanism includes a speed-regulating motor 7 and a gear reducer 8 fixedly connected to each other, the speed-regulating motor 7 and the gear reducer 8 are fixedly connected with a pulley 10, and the two A belt 11 is sleeved on a pulley 10; the main shaft 2 is connected with the bracket 9 through a rolling bearing, the main shaft 2 is fixedly connected with a flange 12, and the planetary shaft 3 is connected with the flange hole through a rolling bearing; the silicone hose 4 passes through the base 1 , and the middle part of the silicone hose 4 is located between the pump head 5 and the planetary shaft 3, the spring 6 is arranged in the pump head 5 to adjust the pressure of the pump head 5, and the right end of each planetary shaft 3 is fixedly connected with a limit block 13, And the diameter of the limiting block 13 is larger than the diameter of the flange hole.

As shown in FIG. 3 and FIG. 4 , several limiting grooves 14 are provided on the circumferential surface of each planetary shaft 3 , and the number of limiting grooves 14 on the planetary shaft 3 on the flange 12 decreases gradually in a clockwise direction. The left end of each planet shaft 3 is provided with a limit hole 15, and the limit hole 15 is connected with a bolt, and the bottom of the bolt is threaded with a nut. After the bolt passes through the limit hole 15, the nut and the bottom thread of the bolt connection, so as to realize the positioning of the bolts, and effectively avoid the possibility of the bolts falling when the planetary shaft 3 rotates, thereby ensuring the stability and uniformity of the fluid transmission in the silicone hose 4 .

In addition, each limiting block 13 is fixed with a soft layer. Since the soft layer has a certain degree of ductility, the soft layer can be deformed to a certain extent during the process of limiting the planetary shaft 3, thereby enhancing the stability of the planetary shaft 3. The limiting effect of the shaft 3; and the soft layer can also reduce the wear on the flange 12.

In this embodiment, during operation, the spring 6 in the pump head 5 is used to adjust the pressure of the pump head 5 to squeeze the silicone hose 4 between the pump head 5 and the planetary shaft 3; the speed regulating motor 7 and the gear reducer 8 connected, and both are fixed on the base 1, the speed regulating motor 7 drives the gear reducer 8 to rotate, and the gear reducer 8 drives the two pulleys 10 to rotate through the belt 11; due to the reason of the rolling bearing, the pulley 10 drives the bracket 9 to rotate The main shaft 2 rotates, and the main shaft 2 drives the flange 12 to revolve, so that friction occurs between the silicone hose 4 and the planetary shaft 3, and the planetary shaft 3 rotates under the action of friction due to the rolling bearing, so as to realize multi-channel fluid supply same amount. When it is necessary to increase the fluid flow rate, drive each planetary shaft 3 to move away from the pulley 10, use the limit block 13 on the planetary shaft 3 to limit the position, and use the bolt to pass through the limit hole on the planetary shaft 3 15, and then use the nut and the bottom of the bolt to be threaded to realize the limit of the planetary shaft 3; according to the linear trapezoidal arrangement of the limit groove 14 of the planetary shaft 3, it can give way to the pump head 5 and the planetary shaft. The silicone hose 4 between the shafts 3 is arranged obliquely, which lengthens the transmission path of the fluid, thereby increasing the flow rate of the fluid. Compared with the traditional manual replacement of the flange 12, the operation is more convenient and the labor intensity is reduced.

What has been described above is only an embodiment of the present invention, and common knowledge such as specific structures and/or characteristics known in the scheme will not be described too much here. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present invention, several modifications and improvements can also be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation of the present invention. Effects and utility of patents. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims (4)

1. A delivery pump for controlling multi-channel coaxial fluid flow, comprising a base, a main shaft, a rolling bearing, a planetary shaft, a silicone hose, a pump head and a spring; the base is provided with a power mechanism and a support, and the power mechanism includes A speed-regulating motor and a gear reducer fixedly connected to each other, the speed-regulating motor and the gear reducer are respectively provided with pulleys, and a belt is sleeved on the two pulleys; the main shaft is connected to the bracket through a rolling bearing, and the There is a flange on the main shaft, and the planetary shaft is connected to the flange hole through a rolling bearing; the silicone hose passes through the base, and the middle part of the silicone hose is located between the pump head and the planetary shaft, and the spring is arranged in the pump head It is used to adjust the pressure of the pump head, and it is characterized in that: each planetary shaft is provided with a limit block at the end close to the pulley; each of the planetary shafts is provided with a number of limit grooves on the circumferential surface, and the flange is along the The number of limiting grooves on the planetary shaft in the clockwise direction decreases gradually. 2. The delivery pump for controlling multi-channel coaxial fluid flow according to claim 1, characterized in that: each of the planetary shafts is provided with a limit hole at the end away from the pulley, and the sliding connection on the limit hole is limited. bit pieces. 3 . The delivery pump for controlling multi-channel coaxial fluid flow according to claim 2 , wherein the limiting member is a bolt, and a nut is detachably connected to the bolt. 4 . 4. The delivery pump for controlling multi-channel coaxial fluid flow according to claim 3, wherein a soft layer is provided on the limit block.