CN215633707U - Thin-walled piston for tooth flushing device piston pump - Google Patents

Abstract

The utility model discloses a thin-wall piston for a tooth flushing device piston pump, which aims to solve the problems that the side edge of the thin-wall piston is easy to leak gas when the piston in the existing piston pump is sealed with a pump cylinder, the internal pressure of the pump cylinder is reduced, and the requirement of equipment with higher sealing property is difficult to meet; the thin-wall piston is made of nylon plastic, a first protruding portion protruding upwards in a thin-wall shape is arranged at the top of the outer circumference of the cylindrical shape of the thin-wall piston, a second protruding portion protruding downwards in a thin-wall shape is arranged at the bottom of the outer circumference of the cylindrical shape of the thin-wall piston, the circumferential diameters of the first protruding portion and the second protruding portion are the same, and a horn blind hole used for enabling a connecting rod to extend into the first protruding portion and to be clamped is formed in one side of the axial center of the cylindrical shape of the thin-wall piston. This thin wall shape piston not only more laminates with the contact of pump cylinder, and the leakproofness is stronger, utilizes the deformation that produces in its motion process moreover, has further promoted the leakproofness effect, makes the water in the piston pump chamber impress the outlet pipe with bigger water pressure and water yield.

Description

Thin-walled piston for tooth flushing device piston pump

Technical Field

The utility model belongs to the technical field of daily necessities, and particularly belongs to a thin-wall piston for a tooth flushing device piston pump.

Background

The tooth flusher is an auxiliary tool for cleaning the oral cavity, and mainly utilizes a pulse water flow impact mode to clean teeth and tooth gaps, and the flushing pressure of the tooth flusher is 0 to 90psi generally. The water pressure of the pulse water flow generated by the tooth flusher is generally the water pressure generated by tap water and a built-in pump, and the pump for the tooth flusher is generally a piston pump, namely, the reciprocating motion of a piston in the piston pump is utilized to lead the working volume of a pump cavity to be changed periodically, thus realizing the suction and discharge of liquid, and further forming the pulse water flow to clean teeth and tooth gaps.

The piston pump is also called as an electric reciprocating pump, can be divided into a single cylinder and a plurality of cylinders from the structure, and is characterized by higher lift. The piston pump consists of a pump cylinder, a piston, a water inlet one-way valve, a water outlet one-way valve, a water inlet pipe, a water outlet pipe, a connecting rod and a transmission device, and the piston is driven by power to reciprocate in the pump cylinder. The working process of the piston pump in the tooth flushing device is that when the piston does stretching motion, the water inlet check valve is opened, the water outlet check valve is closed, and water enters the pump cylinder through the water inlet pipe; when the piston is in compression movement, the water inlet check valve is closed, the water outlet check valve is opened, water pressure is formed in the pump cylinder, the water in the pump cylinder is pressed into the water outlet pipe, and water is repeatedly fed and discharged in such a way that water is continuously discharged from the water outlet pipe in a pulse water flow mode.

In order to ensure that the impulse water flow generated by the piston pump for the existing tooth flushing device has a considerable water pressure, the interior of the piston pump must have excellent sealing performance, and particularly the sealing performance between the piston and the pump cylinder plays a decisive role. At present, however, the sealing performance between the piston and the pump cylinder in the existing piston pump is mainly realized by the size relationship of the mutual matching of the piston and the pump cylinder and the rubber sealing ring sleeved outside the piston, and the mode can meet the general performance requirements, but is difficult to achieve for equipment needing higher sealing performance; the sealing between piston and the pump cylinder in the piston pump now, the in-process of piston up-and-down motion in the pump cylinder, because of the reason of current piston material and structure, its side easily takes place gas leakage, especially is doing the tensile motion in-process at the piston, and its side easily takes place to admit air to it is not abundant to lead to intaking in the pump cylinder, and has reduced the inside pressure of pump cylinder, and then has reduced the water yield and the water pressure of piston compression drainage, has influenced the result of use. Therefore, in order to solve the above-mentioned problem affecting the sealing performance between the piston and the cylinder in the piston pump, it is necessary to solve the problem and meet the requirement of a device with high sealing performance.

SUMMERY OF THE UTILITY MODEL

(1) Technical problem to be solved

Aiming at the defects of the prior art, the utility model aims to provide a thin-wall piston for a tooth flushing device piston pump, aiming at solving the problems that the sealing between the piston and a pump cylinder in the existing piston pump is realized, and the side edge of the piston is easy to leak in the process of moving up and down in the pump cylinder, so that the water inlet in the pump cylinder is insufficient, the internal pressure of the pump cylinder is reduced, the water quantity and the water pressure of the piston for compressing and draining water are reduced, the use effect is influenced, and the requirement of equipment with higher sealing property is difficult to meet; this thin wall shape piston not only more laminates with the contact of pump cylinder, and the leakproofness is stronger, utilizes the deformation that produces in its motion process moreover, has further promoted the leakproofness effect to make the pump chamber of piston pump can get into more water, and can make the water in the pump chamber of piston pump impress the outlet pipe with bigger water pressure and water yield, thereby promote the impact effect that the piston pump produced pulse rivers.

(2) Technical scheme

In order to solve the technical problem, the utility model provides a thin-walled piston for a tooth flusher piston pump, wherein the thin-walled piston is made of nylon plastics, a first protruding part protruding upwards in a thin-walled shape is arranged at the outer top of the cylindrical circumference of the thin-walled piston, a second protruding part protruding downwards in a thin-walled shape is arranged at the outer bottom of the cylindrical circumference of the thin-walled piston, the circumferential diameters of the first protruding part and the second protruding part are the same, and a horn blind hole for a connecting rod to extend into and be clamped is formed in one side of the cylindrical axial center of the thin-walled piston.

This technical scheme combines its nylon plastics material that is hard a little through the structure of its thin wall form protruding first bellying and the second bellying that stretches out, makes thin wall form piston and pump cylinder realize comparatively inseparable hard atress contact, makes its contact more laminate to make the leakproofness stronger. Meanwhile, in the working process of the piston pump using the thin-wall piston in the tooth flushing device, when the thin-wall piston is pulled down by the connecting rod to do stretching movement, the thin-wall piston is connected with the connecting rod through the horn blind hole, the thin-wall piston is subjected to the action force of the pulling down of the connecting rod to generate certain deformation, the integral shape is deflected downwards, namely the upper part of the whole body contracts and becomes small, the lower part expands and becomes large, the periphery of the first bulge part contracts and becomes small slightly, and the periphery of the second bulge part expands and becomes large slightly, so that in the stretching movement of the thin-wall piston pulled down by the connecting rod, the first bulge part is tightened towards the middle part, the second bulge part is expanded towards two sides, the second bulge part plays a sealing role, at the moment, the water inlet one-way valve is opened, the water outlet one-way valve is closed, the water enters the pump cylinder through the water inlet pipe, and further more water can enter the pump cavity of the piston pump; when the thin-wall piston is pushed upwards by the connecting rod to perform compression movement, the thin-wall piston is connected with the connecting rod through the horn blind hole, the thin-wall piston is subjected to the acting force of the pushing upwards of the connecting rod, so that the thin-wall piston generates certain deformation per se and the integral shape is deflected upwards, namely, the whole body is expanded and enlarged at the upper part and contracted and reduced at the lower part, the periphery of the first lug boss is slightly expanded and enlarged, the periphery of the second lug boss is slightly contracted and reduced, therefore, when the thin-wall piston is pushed up by the connecting rod to do compression movement, the first bulge part is opened towards two sides, the second bulge part is tightened towards the middle part, the first bulge part plays a sealing role, the water inlet one-way valve is closed, the water outlet one-way valve is opened, water pressure is formed in the pump cylinder and the water pressure in the pump cavity is led into the water outlet pipe, and then the water in the pump cavity of the piston pump can be pressed into the water outlet pipe with higher water pressure and water quantity, and the water is repeatedly fed and discharged in such a way, so that the water is continuously discharged from the water outlet pipe in a pulse water flow mode.

In the technical scheme, the piston is called a thin-wall piston because the cylindrical circumferential outer top of the piston is provided with a thin-wall first bulge extending upwards, the cylindrical circumferential outer bottom of the piston is provided with a thin-wall second bulge extending downwards, and the section projections of the first bulge and the second bulge are thin-wall.

Preferably, the shape of the horn blind hole is completely consistent with the shape of the part, extending into the connecting rod, of the connecting rod, clamped in the horn blind hole. Therefore, in the process of pulling down or pushing up the thin-wall piston by lifting the connecting rod, the deformation degree of the thin-wall piston is generated by stress, and the sealing effect generated by the thin-wall piston is ensured to the maximum extent.

Preferably, the protruding ends of the first protruding part and the second protruding part are sharp. Therefore, the contact fit of the thin-wall piston and the pump cylinder can be enhanced, and the sealing performance of the thin-wall piston is stronger.

Preferably, the first protruding portion and the second protruding portion are arranged up and down symmetrically. Therefore, the consistency of the thin-wall piston in the process of drawing down or pushing up and compressing can be improved, and the use stability of the thin-wall piston is improved.

(3) Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: the thin-wall piston is combined with a slightly hard nylon plastic material through the structures of the first bulge part and the second bulge part which extend out of the thin-wall bulge, so that the thin-wall piston is in closer hard stressed contact with the pump cylinder, the contact is more attached, and the sealing performance is stronger; meanwhile, the thin-walled piston made of nylon plastics is used for driving the deformation generated in the process of pulling down or pushing up by the connecting rod, so that the sealing effect is further improved, more water can enter the pump cavity of the piston pump, the water in the pump cavity of the piston pump can be pressed into the water outlet pipe by using larger water pressure and water quantity, and the impact effect of pulse water flow generated by the piston pump is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of a thin-walled piston according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a thin-walled piston applied to a piston pump of a tooth irrigator according to an embodiment of the utility model, wherein the piston pump is in a water inlet state when a connecting rod is stretched downwards.

FIG. 3 is a schematic structural view of a thin-walled piston applied to a piston pump of a tooth irrigator according to an embodiment of the present invention, wherein the piston pump is in a water discharge state when a connecting rod is pushed up and compressed.

The labels in the figures are: 1-pump cylinder, 2-thin-wall piston, 201-first bulge, 202-second bulge, 3-water inlet one-way valve, 4-water outlet one-way valve, and 5-connecting rod.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood and obvious, the technical solutions in the embodiments of the present invention are clearly and completely described below to further illustrate the utility model, and obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments.

Example 1

The thin-wall piston 2 for the tooth flusher piston pump is characterized in that a first protrusion 201 protruding upwards in a thin-wall shape is arranged at the outer top of the cylindrical circumference of the piston, a second protrusion 202 protruding downwards in a thin-wall shape is arranged at the outer bottom of the cylindrical circumference of the piston, the protruding ends of the first protrusion 201 and the second protrusion 202 are sharp, and the piston is called as a thin-wall piston 2 because the section projections of the first protrusion 201 and the second protrusion 202 of the piston are thin-wall shapes, and the structural schematic diagram of the piston is shown in fig. 1; the thin-wall piston 2 is made of nylon plastic, the circumferential diameters of the first protruding portion 201 and the second protruding portion 202 are the same, a horn blind hole for enabling the connecting rod 5 to extend into the horn blind hole and to be clamped is formed in one side of the cylindrical axial center of the thin-wall piston 2, and the shape of the horn blind hole is completely the same as the shape of the portion, extending into the connecting rod 5 and clamped in the horn blind hole. In addition, the first protruding portion 201 and the second protruding portion 202 may be disposed vertically symmetrically, but may also be vertically asymmetrical as shown in the present embodiment, which may also achieve the effect of the sealing.

The thin-wall piston 2 is combined with the nylon plastic material which is harder through the structures of the first bulge part 201 and the second bulge part 202 which extend out of the thin-wall bulge, so that the thin-wall piston 2 is in closer rigid stress contact with the pump cylinder 1, the contact is more attached, and the sealing performance is stronger. Meanwhile, when the piston pump using the thin-wall piston 2 is in the working process in the tooth flusher, when the thin-wall piston 2 is pulled down by the connecting rod 5 to do stretching movement, the thin-wall piston 2 is connected with the connecting rod 5 through the horn blind hole, the thin-wall piston 2 is acted by the pull-down acting force of the connecting rod 5, the thin-wall piston 2 generates certain deformation, the integral shape is deflected downwards, that is, the upper portion shrinks less and the lower portion expands more, the outer periphery of the first protruding portion 201 shrinks slightly less, the outer periphery of the second protruding portion 202 expands slightly more, therefore, when the thin-wall piston 2 is pulled down by the connecting rod 5 to do stretching movement, the first bulge 201 is tightened towards the middle part, the second bulge 202 is opened towards two sides, the second bulge 202 plays a sealing role, the water inlet one-way valve 3 is opened at the moment, the water outlet one-way valve 4 is closed, water enters the pump cylinder 1 through the water inlet pipe, and further more water can enter the pump cavity of the piston pump; when the thin-wall piston 2 is pushed up by the connecting rod 5 to do compression movement, the thin-wall piston 2 is connected with the connecting rod 5 through the horn blind hole, the thin-wall piston 2 is pushed up by the connecting rod 5 to generate certain deformation, the integral shape is deflected upwards, namely the upper part of the integral body expands and becomes larger, the lower part contracts and becomes smaller, the periphery of the first bulge part 201 slightly expands and becomes larger, and the periphery of the second bulge part 202 slightly contracts and becomes smaller, so that in the compression movement of the thin-wall piston 2 pushed up by the connecting rod 5, the first bulge part 201 expands towards two sides, the second bulge part 202 tightens towards the middle part, the first bulge part 201 plays a sealing role, at the moment, the water inlet check valve 3 is closed, the water outlet check valve 4 is opened, water pressure is formed in the pump cylinder 1 and water in the pump cavity is pressed into the water outlet pipe, and further water in the pump cavity of the piston pump can be pressed into the water outlet pipe with larger water pressure and water quantity, and water is repeatedly fed and discharged in such a way, so that the water is continuously discharged from the water outlet pipe in a pulse water flow mode. The thin-wall piston 2 is applied to a piston pump of a tooth flushing device, and when a connecting rod 5 is stretched downwards, the piston pump is in a water inlet state, and the structural schematic diagram is shown in figure 2; the thin-wall piston 2 is applied to a piston pump of a tooth flushing device, and the structure schematic diagram of the piston pump in a water outlet state when the connecting rod 5 is pushed upwards and compressed is shown in figure 3.

The thin-wall piston 2 is combined with the slightly hard nylon plastic material through the structures of the first bulge part 201 and the second bulge part 202 extending out of the thin-wall bulge of the thin-wall piston 2, so that the thin-wall piston 2 is in closer hard stressed contact with the pump cylinder 1, the contact is more attached, and the sealing performance is stronger; meanwhile, the thin-wall piston 2 made of nylon plastic is driven by the connecting rod 5 to deform in the process of pulling up and pulling down or pushing up, so that the sealing effect is further improved, more water can enter the pump cavity of the piston pump, the water in the pump cavity of the piston pump can be pressed into the water outlet pipe by using larger water pressure and water quantity, and the impact effect of pulse water flow generated by the piston pump is improved.

Having thus described the principal technical features and basic principles of the utility model, and the advantages associated therewith, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description is described in terms of various embodiments, not every embodiment includes only a single embodiment, and such descriptions are provided for clarity only, and those skilled in the art will recognize that the embodiments described herein can be combined as a whole to form other embodiments as would be understood by those skilled in the art.

Claims (4)

1. The utility model provides a towards tooth ware piston pump is with thin wall shape piston, a serial communication port, the thin wall shape piston is nylon plastics material, just the outer top of the cylindricality circumference of thin wall shape piston is equipped with the first bellying that the upwards arch of thin wall form stretches out, the outer bottom of the cylindricality circumference of thin wall shape piston is equipped with the second bellying that the downward arch of thin wall form stretches out, first bellying is the same with the circumference diameter of second bellying, open one side of the cylindricality axial direction center of thin wall shape piston has the loudspeaker blind hole that is used for the connecting rod to stretch into and carry out the joint wherein.

2. The thin-walled piston for the dental irrigator-piston pump according to claim 1, wherein the shape of the horn blind hole is completely consistent with the shape of the part of the connecting rod, which is inserted into and clamped in the horn blind hole.

3. The thin-walled piston for the dental irrigator-piston pump according to claim 1, wherein the protruding ends of the first and second bosses are sharp.

4. The thin-walled piston for the dental irrigator-piston pump according to claim 1, wherein the first and second protrusions are arranged vertically symmetrically.

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