CN222084640U - Air push piston rod assembly and continuous piston pump - Google Patents

Abstract

The utility model discloses an air pushing piston rod assembly and a continuous piston pump, wherein the air pushing piston rod assembly is arranged in the piston pump, the continuous piston pump comprises a first chamber and a second chamber, the air pushing piston comprises a first air pushing piston arranged in the first chamber and a second air pushing piston arranged in the second chamber, and the first air pushing piston and the second air pushing piston are respectively communicated with a first air passage and a second air passage so as to respectively pressurize or depressurize the first air pushing piston and the second air pushing piston through the first air passage and the second air passage, so that the first air pushing piston and the second air pushing piston are driven to open or close a feed inlet of the first chamber and a feed inlet of the second chamber. According to the utility model, the first air passage and the second air passage are used for independently controlling the first air pushing piston and the second air pushing piston to form positive pressure or negative pressure, so that the opening and closing of the first chamber and the second chamber are controlled, and the continuous discharging rhythm of the piston pump is adapted.

Description

Air-pushing piston rod assembly and continuous piston pump

Technical Field

The utility model relates to the technical field of plunger push rod structures, in particular to an air-push piston rod assembly. In addition, it relates to a continuous piston pump.

Background

Piston pumps are a common type of hydraulic pump and are widely used in industrial production and mechanical equipment. The high-viscosity encapsulating material for treating the raw material barrel package adopts a piston pump to convey liquid at high pressure.

At present, most piston pumps in the market are high-pressure piston pumps, glue supply pressure is provided through a column cylinder, materials are lifted up and down by the piston pump to enter a feeding cavity, a pump body is continuously discharged by a volume difference and a one-way flow structure in the feeding cavity, but in the discharging process, the feeding cavity is different due to the pressure difference of discharge valve ports of the feeding cavity, so that in the feeding and discharging process, feeding and discharging ports of different cavities cannot be opened or closed rapidly and stably, instability of a pump body during feeding and discharging is caused easily, and the continuous discharging rhythm of the piston pump is influenced.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art.

Therefore, the utility model provides the air pushing piston rod assembly, which can rapidly open and close the first chamber and the second chamber by controlling the air pushing piston rod assembly through air pressure.

The air pushing piston rod assembly comprises an air pushing piston, an air channel and a piston cavity arranged between the air pushing piston and the air channel, wherein the air channel is connected with the piston cavity so as to be capable of pressurizing or depressurizing the piston cavity through the air channel to drive the air pushing piston to reciprocate.

The second aspect of the utility model provides a continuous piston pump, the air pushing piston rod assembly is arranged in the continuous piston pump, the continuous piston pump comprises a first chamber and a second chamber, the air pushing piston comprises a first air pushing piston arranged in the first chamber and a second air pushing piston arranged in the second chamber, the first air pushing piston and the second air pushing piston are respectively communicated with a first air passage and a second air passage,

The first air passage is suitable for pressurizing the first air pushing piston to drive the first air pushing piston to close the feeding port of the first chamber, and is suitable for depressurizing the first air pushing piston to drive the first air pushing piston to open the feeding port of the first chamber;

the second air passage is suitable for pressurizing the second air pushing piston to drive the second air pushing piston to open the feed inlet of the second chamber, and the second air passage is suitable for depressurizing the second air pushing piston to drive the second air pushing piston to close the feed inlet of the second chamber.

The utility model has the advantages that the first air pushing piston and the second air pushing piston are respectively arranged in the first chamber and the second chamber, and can be driven to open and close by the first air passage and the second air passage, when air pressure is input into the first air pushing piston and the second air pushing piston by the first air passage and the second air passage, the first air pushing piston and the second air pushing piston are pushed to move towards the feed inlet of the piston pump to close the feed inlet, and when the first air passage and the second air passage suck air pressure in the first air pushing piston and the second air pushing piston, negative pressure is formed at the moment, and the first air pushing piston and the second air pushing piston are pushed to be far away from the feed inlet of the piston pump to open the feed inlet, so that positive pressure or negative pressure is formed in the first air pushing piston and the second air pushing piston by the first air passage and the second air passage is independently controlled, and the continuous discharging rhythm of the piston pump is stabilized.

Preferably, the first air pushing piston is adapted to divide the first chamber to form a first feeding cavity and a first discharging cavity, the first air pushing piston comprises a first sealing ball, a first piston seat and a piston push rod, the first piston seat is adapted to be embedded into the piston push rod, a first piston cavity is formed between the first piston seat and the piston push rod, the first piston cavity is adapted to be communicated with the first air passage,

The first air passage is used for exhausting air from the first piston cavity so as to enable negative pressure to be formed in the first piston cavity;

the first air passage deflates the first piston chamber to create a positive pressure within the first piston chamber.

Further preferably, a material passing flow passage is formed at a side edge of the piston push rod, and when negative pressure is formed in the piston cavity, the first air pushing piston opens a feed inlet of the piston pump, and the material passing flow passage is suitable for being communicated with the first feed cavity and the first discharge cavity formed by the first cavity.

Preferably, the other end of the first air passage extends out of the piston push rod, and a first pressure control device is externally connected to the other end of the first air passage so as to control the pressure in the first piston cavity through the first pressure control device.

Further preferably, a first sealing component is further arranged between the side wall of the first piston seat and the piston push rod, and the first sealing component is suitable for separating the first piston cavity from the first cavity so as to limit the material in the first cavity from flowing into the first piston cavity.

Preferably, the second air pushing piston comprises an inlet seat, a second sealing ball and a second piston seat, wherein the second sealing ball is connected with the second piston seat, the second piston seat is embedded into the inlet seat, a second piston cavity is formed between the inlet seat and the second piston seat, the second air passage is communicated with the second piston cavity,

The second air passage is used for exhausting air from the second piston cavity so as to enable negative pressure to be formed in the second piston cavity;

the second air passage deflates the second piston chamber to create positive pressure within the second piston chamber.

Further preferably, the second air passage is adapted to extend out of the inlet seat, and a second pressure control device is connected to the second air passage, and the second pressure control device is adapted to control the formation of positive pressure or negative pressure in the second piston cavity.

Preferably, a second sealing assembly is arranged between the second piston seat and the inlet seat, and the second sealing assembly is suitable for isolating the second piston cavity from the piston pump feed inlet so as to limit the material input through the piston pump feed inlet from flowing into the second piston cavity.

Further preferably, the second seal assembly and the first seal assembly are both bi-directional seals.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic cross-sectional view of an air-pushed piston rod assembly of the present utility model.

Reference numerals:

1. The device comprises a first chamber, a first feeding cavity, a first discharging cavity and a second feeding cavity, wherein the first chamber is a first chamber;

2. a second chamber;

3. The first air pushing piston, 31, a first air passage, 32, a first sealing ball, 33, a first piston seat, 34, a piston push rod, 35, a first piston cavity, 36, a material passing flow passage and 37, and a first sealing component;

4. The second air pushing piston, 41, a second air passage, 42, an inlet seat, 43, a second sealing ball, 44, a second piston seat, 45, a second piston cavity and 46, and a second sealing assembly.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

The air pushing piston rod assembly comprises an air pushing piston, an air channel and a piston cavity arranged between the air pushing piston and the air channel, wherein the air channel is connected with the piston cavity so as to be capable of pressurizing or depressurizing the piston cavity through the air channel to drive the air pushing piston to reciprocate

Referring to fig. 1, a continuous piston pump according to a specific embodiment of the present utility model adopts the air-pushing piston rod assembly, where the air-pushing piston rod assembly is disposed in the continuous piston pump, and the continuous piston pump includes a first chamber 1 and a second chamber 2, and the opening and closing of the feed inlets of the first chamber 1 and the second chamber 2 can be independently controlled by the air-pushing piston rod assembly, so that during the reciprocating motion of the piston pump, the piston pump can continuously and stably discharge in a quantitative manner by controlling the feed of the first chamber 1 and the second chamber 2.

Specifically, the air pushing piston comprises a first air pushing piston 3 arranged in the first chamber 1 and a second air pushing piston 4 arranged in the second chamber 2, the first air pushing piston 3 and the second air pushing piston 4 are respectively communicated with a first air passage 31 and a second air passage 41, the first air pushing piston 3 and the second air pushing piston 4 can be respectively pushed to move towards or away from the corresponding feed inlets of the first chamber 1 and the second chamber 2 through the first air passage 31 and the second air passage 41, so that the opening and the closing of the first chamber 1 and the second chamber 2 are controlled, and when the first air pushing piston 3 and the second air pushing piston 4 are controlled to move, the first air pushing piston 3 and the second air pushing piston 4 are independently operated, so that the first chamber 1 and the second chamber 2 can be independently opened and closed, and the simultaneous opening and the closing can be realized.

More specifically, the first air pushing piston 3 is adapted to divide the first chamber 1 to form a first feeding chamber 11 and a first discharging material, the first feeding chamber 11 is used for feeding material, the first discharging chamber 12 is used for discharging material, and when the first air pushing piston 3 opens the feeding port of the first chamber 1, the first feeding chamber 11 is communicated with the first discharging chamber 12, so that the material fed in the first feeding chamber 11 is conveyed into the first discharging chamber 12 and then is discharged.

The first air pushing piston 3 comprises a first sealing ball 32, a first piston seat 33 and a piston push rod 34, wherein the first sealing ball 32 is connected with the first piston seat 33, the first piston seat 33 is suitable for being embedded into the piston push rod 34, a first piston cavity 35 is formed between the first piston seat 33 and the piston push rod 34, the first piston cavity 35 is communicated with the first air channel 31, and therefore air can be pumped or discharged from the first piston cavity 35 through the first air channel 31, so that positive pressure or negative pressure is formed in the first piston cavity 35. When positive pressure is formed in the first piston cavity 35, the piston push rod 34 moves towards the direction close to the feed inlet of the first chamber 1, synchronously drives the first piston seat 33 and the first sealing ball 32 connected with the piston push rod to move until the first sealing ball 32 completely seals the first chamber 1, so that the first chamber 1 is closed, and when negative pressure is formed in the first piston cavity 35, the piston push rod 34 drives the first piston seat 33 and the first sealing ball 32 to move towards the direction far away from the feed inlet of the first chamber 1, and when the first sealing ball 32 is not contacted with the feed inlet of the first chamber 1, the first sealing ball 32 synchronously opens the feed channel, so that the first chamber 1 is opened.

In addition, the side of the piston push rod 34 is further provided with a material passing flow passage 36, and when the negative pressure is formed in the first piston cavity 35, the piston push rod 34 moves towards a direction away from the feed inlet of the first chamber 1 to open the feed inlet of the first chamber 1, and the material passing flow passage 36 at this time can be communicated with the first feed cavity 11 and the first discharge cavity 12, so that the material in the feed cavity is transferred to the first discharge cavity 12 and then is output.

Specifically, the first air passage 31 is disposed in the piston push rod 34, and after one end of the first air passage 31 is communicated with the first piston cavity 35, the other end of the first air passage 31 extends out of the piston push rod 34, and a first pressure control device is disposed outside a portion extending out of the first air passage 31, and the first pressure control device can perform air suction or inflation operation to the first piston cavity 35 through the first air passage 31, so as to increase the pressure in the first piston cavity 35 or decrease the pressure in the first piston cavity 35, and can control the movement of the first sealing ball 32 and the first piston seat 33 through pressure change in the first piston cavity 35, and when the first chamber 1 is closed, the side wall of the first sealing ball 32 simultaneously seals the feed channel and the feed inlet of the first chamber 1, so that the first chamber 1 is completely closed.

More specifically, a first sealing component 37 is further disposed between the sidewall of the first piston seat 33 and the piston push rod 34, and the first sealing component 37 is adapted to separate the first piston cavity 35 from the first chamber 1, so as to effectively limit the material in the first chamber 1 from flowing into the first piston cavity 35. In addition, the first sealing assembly 37 adopts a bidirectional sealing member, the bidirectional sealing member comprises two pan-plug sealing rings, and the opening directions of the two pan-plug sealing rings are opposite, specifically, the opening directions of the two pan-plug sealing rings are respectively the feeding port facing the first chamber 1 and the opposite direction to the feeding port of the first chamber 1.

The second air pushing piston 4 of the air pushing piston rod assembly of the embodiment of the utility model comprises an inlet seat 42, a second sealing ball 43 and a second piston seat 44, wherein the diameter of the second sealing ball 43 is larger than that of the first sealing ball 32, the second sealing ball 43 is connected with the second piston seat 44, the second piston seat 44 is embedded into the inlet seat 42, a second piston cavity 45 is formed between the inlet seat 42 and the second piston seat 44, the second air channel 41 is communicated with the second piston cavity 45, and therefore the second piston cavity 45 can be pumped and deflated through the second air channel 41, so that positive pressure or negative pressure can be formed in the second piston cavity 45. Wherein, the inflation and deflation in the second piston cavity 45 are realized by a second pressure control device outside the second air passage 41, the second air passage 41 is arranged in the inlet seat 42, and the other end of the second air passage 41 extends out of the inlet seat 42 to be connected with the second pressure control device, and the inflation and deflation in the second piston cavity 45 can be realized by the second pressure control device. And, a second sealing assembly 46 is disposed between the second piston seat 44 and the inlet seat 42, and the second sealing assembly 46 can isolate the second piston cavity 45 from the feed inlet of the second chamber 2, so as to limit the material input through the feed inlet of the second chamber 2 from flowing into the second piston cavity 45. And the second seal assembly 46 is a bi-directional opening seal in concert with the first seal assembly 37.

The continuous piston pump of the embodiment of the utility model adopts the air-pushing piston rod assembly according to any embodiment of the utility model, and the continuous piston pump comprises a first chamber 1 and a second chamber 2, wherein the air-pushing piston rod assemblies are respectively arranged in the first chamber 1 and the second chamber 2, and the opening and closing of the feed inlets of the first chamber 1 and the second chamber 2 are independently controlled through the air pressure change in the air-pushing piston rod assemblies so as to adapt to the continuous discharge requirement of the continuous piston pump.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the worker in question without departing from the technical spirit of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined as the scope of the claims.

Claims (10)

1. The air pushing piston rod assembly is characterized by comprising an air pushing piston, an air passage and a piston cavity arranged between the air pushing piston and the air passage, wherein the air passage is connected with the piston cavity, so that the piston cavity can be pressurized and depressurized through the air passage to drive the air pushing piston to reciprocate.

2. A continuous piston pump, characterized in that the piston rod assembly is arranged in the continuous piston pump, the continuous piston pump comprises a first chamber (1) and a second chamber (2), the piston comprises a first piston (3) arranged in the first chamber (1), and a second piston (4) arranged in the second chamber (2), the air passage comprises a first air passage (31) and a second air passage (41) which are respectively communicated with the first piston (3) and the second piston (4),

Wherein the first air passage (31) is adapted to pressurize the first air pushing piston (3) to drive the first air pushing piston (3) to close the feed inlet of the first chamber (1), and the first air passage (31) is adapted to depressurize the first air pushing piston (3) to drive the first air pushing piston (3) to open the feed inlet of the first chamber (1);

The second air passage (41) is suitable for pressurizing the second air pushing piston (4) to drive the second air pushing piston (4) to open the feed inlet of the second chamber (2), and the second air passage (41) is suitable for reducing the pressure of the second air pushing piston (4) to drive the second air pushing piston (4) to close the feed inlet of the second chamber (2).

3. Continuous piston pump according to claim 2, characterized in that the first air-pushing piston (3) is adapted to divide the first chamber (1) to form a first feed chamber (11) and a first discharge chamber (12), the first air-pushing piston (3) comprises a first sealing ball (32), a first piston seat (33) and a piston push rod (34), the first piston seat (33) is adapted to be embedded into the piston push rod (34), and a first piston chamber (35) is formed between the first piston seat (33) and the piston push rod (34), the first piston chamber (35) is adapted to communicate with one end of the first air channel (31),

Wherein the first air passage (31) pumps air from the first piston cavity (35) so as to form negative pressure in the first piston cavity (35);

The first air passage (31) deflates the first piston chamber (35) to form a positive pressure in the first piston chamber (35).

4. A continuous piston pump as claimed in claim 3, characterized in that a material passing flow passage (36) is provided at a side of the piston push rod (34), and when a negative pressure is formed in the first piston chamber (35), the first air-pushed piston (3) opens a feed inlet of the first chamber (1), and the material passing flow passage (36) is adapted to communicate the first feed chamber (11) formed by the first chamber (1) with the first discharge chamber (12).

5. A continuous piston pump as claimed in claim 3, characterized in that the other end of the first air passage (31) extends outside the piston push rod (34), and the other end of the first air passage (31) is externally connected with a first pressure control device so as to be capable of controlling the pressure in the first piston cavity (35) through the first pressure control device.

6. A continuous piston pump as claimed in claim 3, characterized in that a first sealing assembly (37) is further provided between the side wall of the first piston seat (33) and the piston push rod (34), the first sealing assembly (37) being adapted to separate the first piston chamber (35) from the first chamber (1) so as to be able to limit the flow of material in the first chamber (1) into the first piston chamber (35).

7. The continuous piston pump as claimed in claim 6, characterized in that said second air-pushed piston (4) comprises an inlet seat (42), a second sealing ball (43) and a second piston seat (44), said second sealing ball (43) being connected to said second piston seat (44), and said second piston seat (44) being embedded in said inlet seat (42), and a second piston chamber (45) being formed between said inlet seat (42) and said second piston seat (44), said second air duct (41) being in communication with said second piston chamber (45),

Wherein the second air passage (41) pumps the second piston cavity (45) so as to form negative pressure in the second piston cavity (45);

The second air passage (41) deflates the second piston chamber (45) to form a positive pressure in the second piston chamber (45).

8. Continuous piston pump according to claim 7, characterized in that the second air duct (41) is adapted to extend out of the inlet seat (42), and that a second pressure control device is connected to the second air duct (41), which second pressure control device is adapted to control the formation of a positive or negative pressure in the second piston chamber (45).

9. Continuous piston pump according to claim 7, characterized in that a second sealing assembly (46) is arranged between the second piston seat (44) and the inlet seat (42), the second sealing assembly (46) being adapted to isolate the second piston chamber (45) from the feed opening of the second chamber (2) so as to limit the flow of material fed through the feed opening of the second chamber (2) into the second piston chamber (45).

10. Continuous piston pump according to claim 9, characterized in that the second seal assembly (46) and the first seal assembly (37) are both bi-directional seals.