CN220487816U - Linear pump - Google Patents

Abstract

The utility model discloses a linear pump, which comprises a pump body, wherein the pump body comprises an air cavity, an air inlet and an air outlet, which are communicated with the air cavity, an elastic rubber bowl is arranged in the air cavity, the outer edge of the elastic rubber bowl is in sealing fit with the inner wall of the air cavity, the middle part of the elastic rubber bowl is connected with one end of a guide post, and the other end of the guide post is connected with a driving mechanism for driving the guide post to do reciprocating linear motion along the axial direction of the guide post; according to the scheme, the guide post can be driven by the driving mechanism to perform linear and reciprocating motions, the guide post can drive the elastic rubber bowl to perform elastic deformation of which the two ends are alternately concave-convex, so that the capacity of the air cavity is changed, and the air inlet and the air outlet are respectively provided with one-way valves to realize air inlet and air outlet transmission finally; the linear pump of this scheme simple structure, the transmission is direct to save other complicated transmission parts such as eccentric mechanism, make its energy conversion loss low, and the operation is reliable and stable.

Description

Linear pump

Technical Field

The utility model relates to the technical field of driving pumps, in particular to a linear pump.

Background

At present, the pumps on the market basically adopt a rotating motor to drive an eccentric device to realize the reciprocating motion of the pumps; the pump mainly comprises a power device (motor), an eccentric mechanism and a pump body, wherein the eccentric mechanism is used for bringing certain energy conversion loss; in order to solve the complexity of the eccentric mechanism and the energy conversion loss, especially for the micropump, the energy conversion loss is more obvious, and therefore, there is an urgent need for a driving pump with a simple structure and low energy conversion loss.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a linear pump, which solves the problems of complex structure and high energy conversion loss of the traditional rotary driving pump.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a linear pump, it includes the pump body, and the pump body includes the air cavity and with air inlet and the gas outlet of air cavity intercommunication, be provided with the elastic rubber bowl in the air cavity, the outer edge of elastic rubber bowl is sealed with the inner wall of air cavity and cooperates, and the middle part of elastic rubber bowl is connected with the one end of guide post, and the other end of guide post is connected with the actuating mechanism that drives the guide post and do reciprocal rectilinear motion along its axial.

Further, the driving mechanism comprises a shell and a control coil, the control coil is arranged at the end part of the guide post and connected with the control circuit board, and a magnet magnetically matched with the control coil is arranged in the shell.

Further, the shell comprises a magnetic conduction shell attached to one end of the magnet, and a magnetic conduction cover is arranged at the other end of the magnet.

Further, be provided with the clamping ring on the casing, clamping ring detachably sets up the inside at the air cavity, and the inside of air cavity is provided with the snap ring, and snap ring and clamping ring butt respectively are at the both ends of elastic rubber bowl outer edge.

Further, the guide post is movably arranged on the linear bearing in a penetrating way, and the linear bearing is fixed on the shell.

Further, the air inlet and the air outlet are both provided with one-way valves.

The beneficial effects of the utility model are as follows:

1. according to the scheme, the guide post can be driven to linearly and reciprocally move through the driving mechanism, the guide post can drive the elastic rubber bowl to elastically deform to enable two ends of the elastic rubber bowl to alternately concave and convex, the capacity of the air cavity is further changed, and the air inlet and the air outlet are finally transmitted under the synergistic effect of the one-way valve on the air inlet and the air outlet.

2. The linear pump of this scheme simple structure, the transmission is direct to save other complicated transmission parts such as eccentric mechanism, make its energy conversion loss low, and the operation is reliable and stable.

3. The elastic rubber bowl can be used as a sealing piece for the reciprocating motion of the linear pump, and the outer edge of the elastic rubber bowl is in sealing contact with the inner wall of the air cavity through the abutting connection of the clamping ring and the pressing ring; meanwhile, the elastic rubber bowl can limit the movement stroke of the control coil, namely the maximum deformation of the elastic rubber bowl is the movement stroke of the control coil.

4. The linear bearing can limit the movement of the guide post, so that the guide post can precisely and stably perform linear movement, and meanwhile, the linear bearing reduces the friction force in the movement process of the guide post, thereby reducing the power loss.

Drawings

Fig. 1 is a schematic structural view of the linear pump according to the present embodiment.

Fig. 2 is a schematic diagram of energizing a control coil in a unidirectional drive mode.

Fig. 3 is a schematic diagram of energizing a control coil in a bi-directional drive mode.

Wherein, 1, a shell, 2, a magnetic conduction cover, 3, a magnet, 4, a magnetic conduction shell, 5, a compression ring, 6, an elastic rubber bowl, 7, a pump body, 8 and an air cavity, 9, an air inlet, 10, a linear bearing, 11, a control coil, 12, a guide post, 13, a control circuit board, 14, an air outlet, 15 and a clamping ring.

Detailed Description

The following description of the embodiments of the present utility model is provided to facilitate understanding of the present utility model by those skilled in the art, but it should be understood that the present utility model is not limited to the scope of the embodiments, and all the utility models which make use of the inventive concept are protected by the spirit and scope of the present utility model as defined and defined in the appended claims to those skilled in the art.

As shown in fig. 1, the linear pump of this scheme includes pump body 7, and pump body 7 includes air cavity 8 and air inlet 9 and the gas outlet 14 of communicating with air cavity 8, all is provided with the check valve on air inlet 9 and the gas outlet 14, is provided with elastic rubber bowl 6 in the air cavity 8, and the outer edge of elastic rubber bowl 6 is sealed with the inner wall of air cavity 8 and cooperates, and the middle part of elastic rubber bowl 6 is connected with the one end of guide post 12, and the other end and the drive guide post 12 of guide post 12 are along its axial reciprocating rectilinear motion's actuating mechanism connection.

The driving mechanism comprises a shell 1 and a control coil 11, wherein the control coil 11 is arranged at the end part of a guide post 12 and is connected with a control circuit board 13, a magnet 3 magnetically matched with the control coil 11 is arranged in the shell 1, the shell 1 also comprises a magnetic conduction shell 4 attached to one end of the magnet 3 during design, and a magnetic conduction cover 2 is arranged at the other end of the magnet 3; the magnetic range of the magnet 3 can be widened through the magnetic conduction shell 4 and the magnetic conduction cover 2; the shell 1 is provided with a compression ring 5, the outer side wall of the compression ring 5 is provided with external threads, the inner side wall of the air cavity 8 is provided with internal threads matched with the external threads, and in addition, the compression ring 5 and the inner side wall of the air cavity 8 can be fixedly connected in a detachable connection mode such as a buckle; the inside of the air cavity 8 is provided with a clamping ring 15, and the clamping ring 15 and the clamping ring 5 are respectively and tightly abutted against two ends of the outer edge of the elastic rubber bowl 6, so that the outer edge of the elastic rubber bowl 6 is fixed and is in sealing contact with the inner wall of the air cavity 8.

The guide post 12 is movably arranged on the linear bearing 10 in a penetrating way, the linear bearing 10 is fixed on the shell 1, and the linear bearing 10 can limit the movement of the guide post 12, so that the guide post 12 can precisely and stably perform linear movement, and meanwhile, the linear bearing 10 reduces the friction force in the movement process of the guide post 12, thereby reducing the power loss.

The principle of the scheme is specifically described below:

the control circuit board 13 is used for controlling the on-off state and the current direction change of the control coil 11, the control coil 11 is equivalent to the electromagnet 3, the magnetic poles generated by the electromagnet 3 are converted along with the change of the control current direction, meanwhile, the electromagnet 3 is magnetically matched with the magnet 3, the principle that the same poles repel each other and different poles attract each other is utilized, the control coil 11 generates linear and reciprocating motion under the pushing action of magnetic force through changing the magnetic poles of the electromagnet 3, so that the guide post 12 is driven to generate linear and reciprocating motion, the guide post 12 can drive the elastic rubber bowl 6 to generate elastic deformation for alternately concave-convex at two ends of the elastic rubber bowl 6, the capacity of the air cavity 8 is changed, and the air inlet and the air outlet are finally transmitted under the synergistic effect of the check valve on the air inlet 9 and the air outlet 14.

In specific implementation, the linear pump of the scheme has a unidirectional driving mode and a bidirectional driving mode, as shown in fig. 2, in the unidirectional driving mode, the control circuit board 13 does not switch the energizing direction of the control coil 11 and intermittently energizes the control coil 11, that is, a period of high level is firstly conducted in a period of time, and then the power is off for a period of time, so that when the power is on, the control coil 11 moves in one direction and drives the elastic rubber bowl 6 to deform, and after the power is off, the elastic rubber bowl 6 automatically resets by utilizing the elasticity of the elastic rubber bowl, and the control circuit board is circulated in the mode, so that the energizing time of the control coil 11 can be reduced, the energy consumption is reduced, and the low-power driving is realized.

As shown in fig. 3, in the bidirectional driving mode, the control circuit board 13 alternately switches the energizing direction of the control coil 11 and continuously energizes the control coil 11, that is, alternately switches on the high and low levels in one cycle, so that the control coil 11 continuously provides thrust for the guide post 12, and thus the guide post 12 performs linear reciprocating motion, the elastic bowl 6 is elastically deformed in an alternating concave-convex manner, and in this mode, the pumping flow rate of the gas is greater.

Claims (6)

1. The utility model provides a linear pump, its characterized in that includes the pump body, the pump body includes the air cavity and with air inlet and the gas outlet of air cavity intercommunication, be provided with the elastic rubber bowl in the air cavity, the outer edge of elastic rubber bowl and the inner wall sealing fit of air cavity, the middle part of elastic rubber bowl is connected with the one end of guide post, the other end of guide post is connected with the actuating mechanism that drives the guide post and do reciprocal rectilinear motion along its axial.

2. The linear pump of claim 1, wherein the drive mechanism comprises a housing and a control coil disposed at an end of the guide post and electrically connected to the control circuit board, and wherein a magnet magnetically coupled to the control coil is disposed within the housing.

3. The linear pump of claim 2, wherein the housing comprises a magnetically permeable shell attached to one end of a magnet, and wherein a magnetically permeable cover is disposed on the other end of the magnet.

4. The linear pump according to claim 2, wherein the housing is provided with a pressure ring, the pressure ring is detachably arranged in the air cavity, the air cavity is internally provided with a clamping ring, and the clamping ring and the pressure ring are respectively abutted against two ends of the outer edge of the elastic rubber bowl.

5. The linear pump of claim 1, wherein the guide post is movably mounted on a linear bearing that is secured to the housing.

6. The linear pump of claim 1, wherein the air inlet and the air outlet are each provided with a one-way valve.