阅读说明：本技术 一种梅花形凸轮柱塞泵及流动注射分析装置 (Quincunx cam plunger pump and flow injection analysis device ) 是由 昝保真 范智强 昝昆 于 2021-10-15 设计创作，主要内容包括：本发明公开了一种梅花形凸轮柱塞泵及流动注射分析装置,该泵包括：泵壳体,其一侧固定有安装侧板；电机,其固定在安装侧板上；第一横向转轴,其两端均转动连接在泵壳体的两侧壁上,第一横向转轴穿过安装侧板且通过传动机构与电机的输出端固定连接；梅花形凸轮,其套固在第一横向转轴上；摆轮,其顶部一侧与梅花形凸轮接触；泵头壳体,其穿固在泵壳体的前面板上,泵头壳体内部设有泵腔,其内部设有推杆,摆轮的顶部另一侧与推杆头端接触,泵腔上连接有入口单向阀和出口单向阀,推杆上套设有复位弹簧。该梅花形凸轮柱塞泵在流动注射分析装置中可以完全替代传统的蠕动泵,以避免蠕动泵泵管老化、泵管使用寿命短、流量不稳定、甚至断流等问题。(The invention discloses a quincunx cam plunger pump and a flow injection analysis device, wherein the pump comprises: a pump housing having a mounting side plate fixed to one side thereof; a motor fixed on the mounting side plate; the two ends of the first transverse rotating shaft are rotatably connected to the two side walls of the pump shell, and the first transverse rotating shaft penetrates through the mounting side plate and is fixedly connected with the output end of the motor through a transmission mechanism; the quincunx cam is fixedly sleeved on the first transverse rotating shaft; a balance wheel, one side of the top of which is contacted with the quincunx cam; the pump head shell is fixedly penetrated on a front panel of the pump shell, a pump cavity is arranged in the pump head shell, a push rod is arranged in the pump head shell, the other side of the top of the balance wheel is in contact with the head end of the push rod, an inlet one-way valve and an outlet one-way valve are connected to the pump cavity, and a return spring is sleeved on the push rod. The quincunx cam plunger pump can completely replace a traditional peristaltic pump in a flow injection analysis device so as to avoid the problems of aging of a pump tube of the peristaltic pump, short service life of the pump tube, unstable flow, even flow cutoff and the like.)

1. A quincunx cam plunger pump, comprising:

the pump comprises a pump shell (1), wherein a mounting side plate (2) is fixed on one side of the pump shell (1);

the motor (3) is fixed on the inner side of the mounting side plate (2) and arranged on the same side of the pump shell (1), and an output shaft of the motor (3) penetrates through the mounting side plate (2);

the first transverse rotating shaft (4) is arranged in the pump shell (1), two ends of the first transverse rotating shaft (4) are rotatably connected to two side walls of the pump shell (1), and the first transverse rotating shaft (4) penetrates through the mounting side plate (2) and is fixedly connected with the output end of the motor (3) through a transmission mechanism (5);

the quincunx cam (6), the said quincunx cam (6) is fixed on said first horizontal spindle (4) in a sleeving manner;

the bottom of the balance wheel (7) is rotationally connected inside the pump shell (1), and one side of the top of the balance wheel (7) is in contact with the quincuncial cam (6);

pump head casing (8), pump head casing (8) wear to be fixed on the front panel of pump casing (1), pump head casing (8) inside is equipped with pump chamber (801), inside push rod (9) that is equipped with of pump chamber (801), the top opposite side of balance (7) with push rod (9) head end contact, be connected with entry check valve (10) and export check valve (11) on pump chamber (801), the cover is equipped with reset spring (12) on push rod (9), reset spring (12) one end with push rod (9) pole wall is fixed, the other end with step face (8011) on the pump chamber (801) is fixed.

2. A pump according to claim 1, characterized in that the balance (7) comprises:

the second transverse rotating shaft (71), the second transverse rotating shaft (71) is arranged inside the pump housing (1), and both ends of the second transverse rotating shaft are rotatably connected to two side walls of the pump housing (1);

the bottom of the vertical plate (72) is fixedly sleeved on the second transverse rotating shaft (7);

the number of the fixing pins (73) is two, and the two fixing pins (73) are fixed between the tops of the two vertical plates (72) at intervals;

the number of the rollers (74) is two, the rollers (74) are respectively sleeved on the fixing pins (73), one of the rollers (74) is in contact with the quincunx cam (6), and the other roller (74) is in contact with the head end of the push rod (9).

3. A quincunx-cam plunger pump according to claim 2, wherein the diameter of the roller (74) is smaller than the diameter of the concave arc (601) on the quincunx cam (6).

4. The plunger pump of claim 1, wherein the number of petals (602) of the cam (6) is n ≥ 2.

5. The pump as claimed in claim 4, wherein the number of petals (602) of the cam (6) is 8-10.

6. A pump as claimed in claim 1, characterised in that the petals (602) of the cam (6) are smoothly wavy or triangular in shape.

7. A pump according to claim 1, characterized in that said quincunx cam (6), said balance (7), said push rod (9), said inlet check valve (10), said outlet check valve (11) and said return spring (12) are respectively plural.

8. A pump according to any of claims 1-7, wherein the transmission mechanism (5) is one of a belt drive, a gear drive, a chain drive.

9. A flow injection assay device comprising a quincunx cam plunger pump as claimed in any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of plunger pumps, in particular to a quincunx cam plunger pump and a flow injection analysis device.

Background

The Chinese patent application number is 202121687957X, the name is a plunger pump and a flow injection analysis device composed of the plunger pump, and discloses a plunger pump, wherein a motor drives a first transverse rotating shaft to rotate through a transmission mechanism, so that a cam on the plunger pump pushes two balance wheels to swing around a second transverse rotating shaft, the balance wheels push a push rod to move in a reciprocating mode, and then the actions of suction liquid of an inlet one-way valve and pushing liquid of an outlet one-way valve on the plunger pump are achieved. Therefore, the plunger pump adopts a cam transmission mode to replace a traditional peristaltic pump, and the cam linearly moves according to an Archimedes curve, so that the flow speed and the flow of the solution are more stable, particularly, when multiple paths of solutions are mixed, each pump cannot be influenced by the thrust and the generated pressure of other pumps, when some detection systems need multiple paths of mixing, each path can obtain the accurate flow set by an experiment, and the cam can be accurately controlled so as to obtain the accurate flow.

However, the peristaltic pump in the conventional flow injection analysis system is operated to output a stream of solution, which is called turbulent flow, and the flow is more favorable for the mixing and reaction of the reagent in the flow injection method, while the cam in the plunger pump adopts the conventional curve cam, the flow mode of the cam is not consistent with that of the peristaltic pump after the cam completes the extraction and the pushing of the solution once per rotation of the cam, and therefore, in some flow injection analysis devices, the cam type plunger pump cannot completely achieve the same effect as the peristaltic pump.

Therefore, it is an urgent need of those skilled in the art to provide a quincunx cam plunger pump and a flow injection analysis apparatus that can form multiple solution extractions to facilitate the solution output manner to approach the solution flow manner of the peristaltic pump, and can completely replace the conventional peristaltic pump operation manner in the flow injection analysis system.

Disclosure of Invention

In view of the above, the present invention provides a quincunx cam plunger pump and a flow injection analysis device, which can form multiple solution extractions so that the solution output mode is almost completely close to the solution flow mode of a peristaltic pump (if a cam with 8-10 petals is used), and can completely replace the traditional peristaltic pump working mode in a flow injection analysis system.

In order to achieve the purpose, the invention adopts the following technical scheme:

a quincunx cam plunger pump comprising:

a pump housing, a mounting side plate fixed to one side of the pump housing;

the motor is fixed on the inner side of the mounting side plate and arranged on the same side of the pump shell, and an output shaft of the motor penetrates through the mounting side plate;

the first transverse rotating shaft is arranged in the pump shell, two ends of the first transverse rotating shaft are rotatably connected to two side walls of the pump shell, and the first transverse rotating shaft penetrates through the mounting side plate and is fixedly connected with the output end of the motor through a transmission mechanism;

the quincunx cam is fixedly sleeved on the first transverse rotating shaft,

the bottom of the balance wheel is rotationally connected inside the pump shell, and one side of the top of the balance wheel is in contact with the quincuncial cam;

the pump head casing, the pump head casing wears admittedly on the front panel of pump casing, the inside pump chamber that is equipped with of pump head casing, the inside push rod that is equipped with of pump chamber, the top opposite side of balance with the contact of push rod head end, be connected with entry check valve and export check valve on the pump chamber, the cover is equipped with reset spring on the push rod, reset spring one end with push rod pole wall is fixed, the other end with step face on the pump chamber is fixed.

According to the technical scheme, compared with the prior art, the invention discloses the quincunx cam plunger pump, the motor drives the first transverse rotating shaft to rotate through the transmission mechanism, so that the quincunx cam on the motor pushes the balance wheel to swing, the balance wheel pushes the push rod to move in a reciprocating mode, and then the actions of suction liquid of the inlet one-way valve and pushing liquid of the outlet one-way valve on the plunger pump are achieved. Due to the adoption of the quincunx cam, the push rod can continuously and reciprocally move for multiple times when the rotating shaft rotates for one circle, so that turbulent solution output can be formed, the working mode is more favorable for mixing and reacting reagents during flow injection, the solution output mode is very close to the solution flow mode of a peristaltic pump, and the traditional peristaltic pump working mode can be completely replaced in a flow injection analysis system. Therefore, the problems that the material of the existing peristaltic pump pipe is aged, the inner pipe diameter of the peristaltic pump pipe is deformed after extrusion, and the pump pipe is replaced, so that the cost is high, the flow is unstable, even the pump pipe is cut off, and the like can be solved.

Further, the balance comprises:

the second transverse rotating shaft is arranged in the pump shell, and two ends of the second transverse rotating shaft are rotatably connected to two side walls of the pump shell;

the bottom of the vertical plate is fixedly sleeved on the second transverse rotating shaft;

the number of the fixing pins is two, and the two fixing pins are fixed between the tops of the two vertical plates at intervals;

the two idler wheels are respectively sleeved on the fixing pin, one of the idler wheels is in contact with the quincunx cam, and the other idler wheel is in contact with the head end of the push rod.

The technical scheme has the beneficial effects that when the quincunx cam rotates, the high-point of one petal of the quincunx cam contacts one roller wheel, so that the balance wheel swings, the other roller wheel contacts the head end of the push rod and pushes the push rod to move, the reset spring compresses to finish the liquid pushing action, and when the low-point of the petal contacts the roller wheel, the push rod resets under the action of the reset spring to finish the suction action.

Further, the diameter of the roller is smaller than that of the concave arc on the quincunx cam.

The beneficial effect that adopts above-mentioned technical scheme to produce is that, does benefit to the gyro wheel and can roll the minimum to the petal, can guarantee the accuracy that the push rod promoted the distance forward promptly, does benefit to the volume of calculating the rotatory a week pump output liquid of plum blossom shape cam and the flow of pumping out liquid.

Furthermore, the number of the petals of the quincuncial cam is more than or equal to 2.

Furthermore, the number of the petals of the quincuncial cam is 8-10.

Further, the petal shape of the quincunx cam is smooth wave shape or triangle shape.

Furthermore, the quincunx cam, the balance wheel, the push rod, the inlet check valve, the outlet check valve and the return spring are correspondingly multiple.

The technical scheme has the beneficial effects that the injection of multiple reagents can be realized, and the application is wider.

Further, the transmission mechanism is one of belt transmission, gear transmission and chain transmission.

The invention provides a flow injection analysis device, which comprises the quincunx cam plunger pump.

The flow injection analysis device formed by the quincunx cam plunger pump has the advantages that the form of a solution output by the flow injection analysis device is similar to that of a peristaltic pump, the traditional peristaltic pump can be completely replaced, the problems that the cost is high, the flow is unstable and even the flow is cut off due to the fact that the material of a traditional peristaltic pump pipe is aged and the inner pipe diameter of the peristaltic pump pipe is deformed after extrusion are solved, and particularly the flow injection analysis device can be used on an online instrument by using the patent technology.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a quincunx cam plunger pump provided by the invention.

FIG. 2 is a schematic structural view of a cam with a triangular petal shape provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 2, an embodiment of the present invention discloses a quincunx cam plunger pump, including:

a mounting side plate 2 is fixed on one side of the pump shell 1;

the motor 3 is fixed on the inner side of the mounting side plate 2 and arranged on the same side as the pump shell 1, and an output shaft of the motor 3 penetrates through the mounting side plate 2;

the first transverse rotating shaft 4 is arranged inside the pump shell 1, two ends of the first transverse rotating shaft 4 are rotatably connected to two side walls of the pump shell 1, and the first transverse rotating shaft 4 penetrates through the mounting side plate 2 and is fixedly connected with the output end of the motor 3 through a transmission mechanism 5;

a quincunx cam 6, the quincunx cam 6 is fixedly sleeved on the first transverse rotating shaft 4,

the bottom of the balance wheel 7 is rotationally connected inside the pump shell 1, and one side of the top of the balance wheel 7 is in contact with the quincunx cam 6;

the pump head shell 8 is fixedly penetrated on a front panel of the pump shell 1, a pump cavity 801 is arranged in the pump head shell 8, a push rod 9 is arranged in the pump cavity 801, the other side of the top of the balance 7 is in contact with the head end of the push rod 9, an inlet one-way valve 10 and an outlet one-way valve 11 are connected to the pump cavity 801, a return spring 12 is sleeved on the push rod 9, one end of the return spring 12 is fixed with the rod wall of the push rod 9, and the other end of the return spring is fixed with a step surface 8011 on the pump cavity 801.

Balance 7 comprises:

the second transverse rotating shaft 71, the second transverse rotating shaft 71 is arranged inside the pump housing 1, and both ends of the second transverse rotating shaft 71 are rotatably connected to both side walls of the pump housing 1;

the bottom of the vertical plate 72 is fixedly sleeved on the second transverse rotating shaft 7;

two fixing pins 73 are arranged, and the two fixing pins 73 are fixed between the tops of the two vertical plates 72 at intervals;

two rollers 74 are provided, and the rollers 74 are respectively sleeved on the fixing pins 73, wherein one roller 74 is in contact with the quincunx cam 6, and the other roller 74 is in contact with the head end of the push rod 9.

The diameter of the roller 74 is smaller than the diameter of the concave arc 601 on the quincunx cam 6.

The number of petals 602 of the quincunx cam 6 is n or more than 2, and may be n, but is preferably 8 to 10.

The petals 602 of the quincunx cam 6 are smoothly wavy or triangular in shape.

The quincunx cam 6, the balance 7, the push rod 9, the inlet check valve 10, the outlet check valve 11 and the return spring 12 are correspondingly multiple.

The transmission mechanism 5 is one of belt transmission, gear transmission and chain transmission.

A flow injection analysis device comprises the quincunx cam plunger pump.

According to the quincunx plunger pump, the motor drives the first transverse rotating shaft to rotate through the transmission mechanism, so that the quincunx cam on the motor pushes the balance wheel to swing, the balance wheel pushes the push rod to move in a reciprocating mode, and then suction liquid of the inlet one-way valve and pushing liquid of the outlet one-way valve on the plunger pump are achieved. The quincunx cam is adopted, so that the push rod can move in a continuous reciprocating mode, turbulent solution output can be formed, the working mode is more favorable for mixing and reaction of reagents during flow injection, the solution output mode is very close to the solution flow mode of the peristaltic pump, and the traditional peristaltic pump working mode can be completely replaced in a flow injection analysis system. Therefore, the problems of high cost, unstable flow and even cutoff caused by aging of materials and deformation of the inner pipe diameter after extrusion of the conventional peristaltic pump pipe can be solved.

In addition, the highest point of the petal of the quincunx camThe difference from the lowest point is the distance L the push rod is pushed forward, if the diameter of the push rod is known, according to: v ═ pi × r²L S, in the formula: r is the radius of the push rod, L is the difference value between the highest point and the lowest point of the plum blossom-shaped cam petals, and S is the number of the plum blossom petals in one circle. The volume output by the pump when the plum blossom-shaped cam rotates for one circle can be calculated, and the flow of the plum blossom-shaped cam pump can be calculated by calculating the number of revolutions of the motor per minute. It is evident that the pump delivers the solution in a completely different way than the traditional curved cam, which delivers the solution in a smooth delivery and in a turbulent delivery, which is more advantageous for the mixing and reaction of the reagents in specific applications, in particular for flow injection, and the flow rate of the pump is easily obtained by the number of petals or the difference between the maximum and minimum points of the petals.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.