A proportional delivery pump with heating and insulation

Abstract

This invention provides a proportional conveying pump that combines heating and insulation, comprising a frame, a linear drive mechanism, a first pump, a second pump, and a connecting rod assembly. Both the first pump and the linear drive mechanism are mounted on the frame. The drive end of the linear drive mechanism is connected to the telescopic end of the first pump. One end of the connecting rod assembly is hinged to the frame, and the other end is hinged to the drive end of the linear drive mechanism. The second pump is mounted on the frame, and its telescopic end is connected to the connecting rod assembly. The second pump slides along the width of the frame and is positioned accordingly. The invention also includes a heating assembly, which includes a spacer surrounding the outer periphery of the first cylinder. By slidably arranging the second pump, this invention enables the first and second pumps to pump materials proportionally, with an adjustable ratio. The heating assembly heats and insulates the material pumped by the first pump, allowing for immediate heating upon use, significantly saving energy and heating time, and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of emulsion explosive delivery technology, specifically to a proportional delivery pump that also has heating and heat preservation functions. Background Technology

[0002] Emulsion explosives are widely used due to their high stability. They are made by thoroughly mixing aqueous, oil, and sensitizer components at a set temperature and in a set ratio. Ensuring a stable temperature and strictly adhering to the specified ratio during material delivery to the mixer for emulsification are crucial for successful mixing and meeting usage requirements. Current processes typically involve heating the aqueous and oil phases in a storage tank (the sensitizer does not require heating), and then using pumps and pipelines to deliver them to the mixer for emulsification. This setup is unsuitable for producing small quantities of emulsion explosives. When preparing explosives, all the aqueous and oil phase materials in the storage tank need to be heated to the set temperature. However, only a small portion of the aqueous and oil phase materials are actually used, resulting in serious energy waste. Secondly, the aqueous and oil phase materials easily lose heat when passing through the transfer pump, causing the temperature of the aqueous and oil phase materials delivered to the mixer to fall below the design requirements. This is especially true when the weather temperature is low, where heat loss is severe. The emulsion explosive is mixed at too low a temperature, resulting in poor flowability of the oil phase material during the mixing process, leading to insufficient mixing. Consequently, the mixed explosive does not meet the usage standards, resulting in waste of explosives.

[0003] In summary, there is an urgent need for a proportional delivery pump that combines heating and insulation to solve or at least partially solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of this utility model is to provide a proportional conveying pump that combines heating and heat preservation, aiming to ensure that materials are conveyed in proportion while outputting materials at a set temperature, thereby reducing energy consumption. The specific technical solution is as follows:

[0005] A proportional conveying pump that also functions as a heating and heat preservation pump includes a frame, a linear drive mechanism, a first pump, a second pump, and a linkage assembly. The linear drive mechanism is mounted on the frame. The first pump includes a first piston, a first rod, and a first cylinder. The first cylinder is mounted on the frame. The first piston is slidably connected to the first cylinder and divides the first cylinder into a first rod-side chamber and a first rodless chamber. The first end of the first rod is connected to the first piston, and the second end of the first rod extends out of the first cylinder and is connected to the drive end of the linear drive mechanism. A first check valve is provided on the first piston to control the unidirectional flow of material from the first rodless chamber to the first rod-side chamber. The first cylinder is provided with a first inlet, a first outlet, and a second check valve. The first inlet is connected to the first rodless chamber, and the first outlet is connected to the first rod chamber. The second check valve is arranged on the first cylinder and is connected in series with the first inlet. The first end of the connecting rod assembly is hinged to the linear drive mechanism, and the second end of the connecting rod assembly passes over the second pump and is hinged to the frame. The second pump is installed on the frame along the height direction, and the telescopic end of the second pump is connected to the connecting rod assembly. The second pump slides and is positioned along the width direction of the frame. The heating assembly also includes a spacer, on which a first liquid inlet and a first liquid outlet are provided. The spacer is arranged around the outer periphery of the first cylinder, and an annular heating cavity is formed between the spacer and the outer periphery of the first cylinder. Both the first liquid inlet and the first liquid outlet are connected to the annular heating cavity.

[0006] Furthermore, the flow area of ​​the first rodless cavity cross-section is twice the flow area of ​​the first rod cavity cross-section.

[0007] Furthermore, the first liquid inlet is located at the end of the partition sleeve away from the first rod, and the first liquid outlet is located at the end of the partition sleeve close to the first rod.

[0008] Furthermore, the linear drive mechanism is one of the following: hydraulic cylinder, electric actuator, or pneumatic cylinder.

[0009] Furthermore, a columnar heating chamber is provided inside the first rod body, and a second liquid inlet and a second liquid outlet are provided on the first rod body, both of which are connected to the columnar heating chamber.

[0010] Furthermore, both the second liquid inlet and the second liquid outlet are arranged at the top of the first rod; a liquid distribution pipe is provided inside the first rod, the first end of the liquid distribution pipe is connected to the second liquid outlet, and the second end of the liquid distribution pipe extends towards the bottom of the columnar heating chamber in a direction close to the bottom of the first rod.

[0011] Furthermore, the linkage assembly includes a first link and a second link, the first end of the first link is hinged to the drive end of the linear drive mechanism, the second end of the first link is hinged to the first end of the second link, and the second end of the second link is hinged to the frame.

[0012] Furthermore, the first one-way valve includes a ball, and the first piston is provided with a main flow channel and a branch flow channel. The first end of the main flow channel is connected to the branch flow channel, the second end of the main flow channel is connected to the first rodless chamber, and the end of the branch flow channel away from the main flow channel is connected to the first rod chamber. The upper end of the main flow channel is larger than the lower end, and the ball is arranged in the large end of the main flow channel and abuts against the small end of the main flow channel.

[0013] Furthermore, the second pump includes a second piston, a second rod, a second cylinder, and a slider. The second cylinder is mounted on a frame, and the second piston is slidably connected to the second cylinder, separating a second rod chamber and a second rodless chamber within the second cylinder. The first end of the second rod is connected to the second piston, and the second end of the second rod extends out of the second cylinder and is hinged to the slider, which is slidably connected to a first connecting rod. A third check valve is provided on the second piston to control the unidirectional flow of material from the second rodless chamber to the second rod chamber. A second inlet, a second outlet, and a fourth check valve are arranged on the second cylinder. The second inlet communicates with the second rodless chamber, the second outlet communicates with the second rod chamber, and the fourth check valve is arranged on the second cylinder in series with the second inlet.

[0014] Furthermore, two second pumps are arranged, one on each side of the first pump, and two connecting rod assemblies are arranged corresponding to the second pumps; one of the second pumps is equipped with a heating assembly, which is arranged on the outside of the second cylinder.

[0015] The application of the technical solution of this utility model has the following beneficial effects:

[0016] A linear drive mechanism drives the first rod of the first pump to move, enabling the first pump to operate. This mechanism also drives the connecting rod assembly to operate the second pump. When the linear drive mechanism moves the first piston and the first rod downwards, the first one-way valve opens and the second one-way valve closes. Material in the first rodless chamber flows from the first rodless chamber to the first rod chamber through the first one-way valve. Due to the presence of the first rod, the decrease in volume in the first rodless chamber is greater than the increase in volume in the first rod chamber, allowing material in the first rodless chamber to enter the first rod chamber through the first one-way valve. Part of the material is stored in the first rod chamber, while the other part is discharged through the first outlet, thus achieving material pumping. When the linear drive mechanism moves the first piston and the first rod upwards, the first one-way valve closes and the second one-way valve opens. External material is drawn into the first rodless chamber through the first inlet, and material in the first rod chamber is discharged through the first outlet. Therefore, as the linear drive mechanism moves the first piston and the first rod, the first pump continuously pumps material.

[0017] In addition, the liquid used for heating and insulation flows into the annular heating chamber from the first inlet, heating the liquid in the first rodless chamber and the first rod chamber through heat conduction, while also providing insulation. The heating components enable heating and insulation of the material being conveyed in the first pump during the conveying process. This configuration eliminates the need to heat the oil and water phase materials in the storage tank; the material being conveyed is directly heated by the heating components of the first pump during pumping, heating only the required amount, significantly saving energy. Furthermore, in the production of emulsion explosives, the device can be started directly without waiting for the material in the storage tank to heat up, greatly saving time and improving production efficiency.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. These will be described below with reference to... Figures 1-3 The present invention will be described in further detail below. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a proportional delivery pump that combines heating and heat preservation according to this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the first pump in a proportional delivery pump that combines heating and heat preservation according to this utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the second pump in a proportional delivery pump that combines heating and heat preservation according to this utility model.

[0023] The components include: 1. Frame; 2. Linear drive mechanism; 3. First pump; 31. First piston; 311. First check valve; 312. Main flow channel; 313. Diversion channel; 32. First rod; 321. Columnar heating chamber; 322. Second liquid inlet; 323. Second liquid outlet; 324. Liquid distribution pipe; 33. First cylinder; 331. First rod chamber; 332. First rodless chamber; 333. First feed inlet; 334. First discharge outlet; 335. Second check valve. 4. Second pump; 41. Second piston; 411. Third check valve; 42. Second rod; 43. Second cylinder; 431. Second rod chamber; 432. Second rodless chamber; 433. Second feed inlet; 434. Second discharge outlet; 435. Fourth check valve; 44. Slider; 5. Connecting rod assembly; 51. First connecting rod; 52. Second connecting rod; 6. Heating assembly; 61. Spacer; 611. First liquid inlet; 612. First liquid outlet; 613. Annular heating chamber. Detailed Implementation

[0024] To facilitate understanding of this invention, a more comprehensive description is provided below, along with preferred embodiments. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0026] Example:

[0027] See Figures 1-3This embodiment provides a proportional delivery pump that also functions as a heating and heat preservation pump, including a frame 1, a linear drive mechanism 2, a first pump 3, a second pump 4, and a connecting rod assembly 5. The linear drive mechanism 2 is mounted on the frame 1. The first pump 3 includes a first piston 31, a first rod 32, and a first cylinder 33. The first cylinder 33 is mounted on the frame 1. The first piston 31 is slidably connected inside the first cylinder 33, and the first piston 31 separates a first rod-side chamber 331 and a first rodless chamber 332 within the first cylinder 33. The first end of the first rod 32 is connected to the first piston 31. The second end of the first rod 32 extends out of the first cylinder 33 and connects to the drive end of the linear drive mechanism 2. A first one-way valve 311 is provided on the first piston 31 to control the unidirectional flow of material from the first rodless chamber 332 to the first rod chamber 331. The first cylinder 33 is provided with a first inlet 333, a first outlet 334, and a second one-way valve 335. The first inlet 333 communicates with the first rodless chamber 332, and the first outlet 334 communicates with the first rod chamber 331. The second one-way valve 335 is located on the first cylinder 33. 5 is arranged in series with the first feed inlet 333; the first end of the connecting rod assembly 5 is hinged to the linear drive mechanism 2, and the second end of the connecting rod assembly 5 passes over the second pump 4 and is hinged to the frame 1; the second pump 4 is installed on the frame 1 along the height direction, and the telescopic end of the second pump 4 is connected to the connecting rod assembly 5. The second pump 4 slides and is positioned along the width direction of the frame 1. Specifically, a through slot is provided on the frame 1 along the width direction, the second pump 4 is inserted into the slot, and the pump body of the second pump 4 is fastened to the frame 1 by bolts. When it is necessary to move the second pump 4 relative to the frame 1... When positioning, loosen the bolts and slide the second pump 4 along the length of the long groove. After adjusting the position of the second pump 4, tighten the bolts to fix the second pump 4, thereby realizing the sliding and positioning of the second pump 4. It also includes a heating component 6, which includes a spacer 61. The spacer 61 is provided with a first liquid inlet 611 and a first liquid outlet 612. The spacer 61 is arranged around the outer periphery of the first cylinder 33, and the spacer 61 and the outer periphery of the first cylinder 33 enclose an annular heating cavity 613. The first liquid inlet 611 and the first liquid outlet 612 are both connected to the annular heating cavity 613.

[0028] It can be understood that the linear drive mechanism 2 drives the first rod 32 of the first pump 3 to move, making the first pump 3 work, and drives the connecting rod assembly 5 to drive the second pump 4 to work through the linear drive mechanism 2; when the linear drive mechanism 2 drives the first piston 31 and the first rod 32 downward (moving towards the first rodless cavity 332, making the volume of the first rodless cavity 332 smaller), the first one-way valve 311 opens and the second one-way valve 335 closes. The material in the first rodless cavity 332 flows from the first rodless cavity 332 to the first rod cavity 331 through the first one-way valve 311. Because of the presence of the first rod 32, the volume reduction in the first rodless cavity 332 is greater than the volume increase in the first rod cavity 331, thus making the material in the first rodless cavity 332... Material enters the first rod chamber 331 through the first one-way valve 311, where part of the material is stored and the other part is discharged through the first discharge port 334, thus achieving material pumping. When the linear drive mechanism 2 drives the first piston 31 and the first rod 32 upward (moving towards the end away from the first rodless chamber 332, making the volume of the first rodless chamber 332 larger), the first one-way valve 311 closes and the second one-way valve 335 opens, allowing external material to be drawn into the first rodless chamber 332 through the first inlet 333, and the material in the first rod chamber 331 is discharged from the first discharge port 334. Therefore, when the linear drive mechanism 2 drives the first piston 31 and the first rod 32 to move, the first pump 3 pumps the material.

[0029] It is worth noting that the liquid used for heating and heat preservation flows into the annular heating chamber 613 from the first inlet 611, heating the liquid in the first rodless chamber 332 and the first rod chamber 331 through heat conduction, while also providing heat preservation. The heating component 6 enables heating and heat preservation of the material conveyed in the first pump 3 during the conveying process. This arrangement eliminates the need to heat the oil and water phase materials in the storage tank; the material is directly heated by the heating component 6 of the first pump 3 during pumping, heating only the required amount, significantly saving energy. Furthermore, in the production of emulsion explosives, the device can be started directly without waiting for the material in the storage tank to heat up, greatly saving time and improving production efficiency.

[0030] Furthermore, the flow area of ​​the first rodless cavity 332 is twice the flow area of ​​the first rod cavity 331. This means that when the first rod 32 and the first piston 31 move downwards, the decrease in volume of the first rodless cavity 332 is twice the increase in volume of the first rod cavity 331. When the first piston 31 and the first rod 32 move downwards, the liquid in the first rodless cavity 332 flows from the first rodless cavity 332 to the first rod cavity 331 through the first one-way valve 311. Half of the liquid is stored in the first rod cavity 331, and the other half is discharged from the first outlet 612. When the first piston 31 and the first rod 32 move upward, external liquid is drawn into the first rodless chamber 332 through the second one-way valve 335, and the liquid in the first rodless chamber 332 is discharged from the first discharge port 334. The amount of material discharged from the first discharge port 334 is equal to the amount of material discharged when the first piston 31 and the first rod 32 move upward. That is, when the upward and downward speeds of the first piston 31 and the first rod 32 are the same, the flow rate of material discharged from the first discharge port 334 is equal, so that the first pump 3 can stably discharge material from the first discharge port 334 when it is working.

[0031] Furthermore, the first liquid inlet 611 is arranged at the end of the spacer 61 away from the first rod 32, and the first liquid outlet 612 is arranged at the end of the spacer 61 close to the first rod 32.

[0032] It can be seen that the material pumped by the first pump 3 flows from the first rodless chamber 332 to the first rod chamber 331, and the liquid used for heating and heat preservation flows from the first inlet 611 into the annular heating chamber 613 and from the annular heating chamber 613 to the first outlet 612. The flow direction is opposite to the material flow direction. The temperature of the heating and heat preservation liquid at the first inlet 611 is high, and the temperature of the heating and heat preservation liquid at the first outlet 612 is low. This causes the material pumped by the first pump 3 to flow from the first outlet 612 toward the first inlet 611, so that the material can be continuously and stably heated during the conveying process, and the temperature after heating is closer to the temperature of the heating and heat preservation liquid.

[0033] Furthermore, in this embodiment, the linear drive mechanism 2 is a hydraulic cylinder. The extension or retraction of the hydraulic cylinder drives the first pump 3, and the extension or retraction of the hydraulic cylinder drives the connecting rod assembly 5, which in turn drives the second pump 4. It should be noted that in some other embodiments of this invention, the linear drive mechanism 2 can also be an electric push rod or a pneumatic cylinder.

[0034] Furthermore, a columnar heating cavity 321 is provided inside the first rod body 32, and a second liquid inlet 322 and a second liquid outlet 323 are provided on the first rod body 32. Both the second liquid inlet 322 and the second liquid outlet 323 are connected to the columnar heating cavity 321.

[0035] It is understood that heating liquid is input through the second inlet 322, undergoes heat exchange in the columnar heating chamber 321, and is discharged from the second outlet 323. The liquid then heats and maintains the material in the first rod chamber 331 via heat conduction through the outer wall of the first rod 32. Therefore, the material in the first rod chamber 331 is heated and maintained under the combined action of the heating assembly 6 and the columnar heating chamber 321 in the first rod 32, improving heating efficiency and making the heating more uniform and thorough. It is worth noting that the material pumped by the first pump 3 first enters the rodless chamber through the second one-way valve 335. In the rodless chamber, it undergoes initial heating under the action of the heating assembly 6. During pumping, the material in the rodless chamber enters the rod chamber through the first one-way valve 311. In the first rod chamber 331, the material is reheated under the dual action of the heating assembly 6 and the first rod 32 until the temperature reaches the design temperature, and then discharged from the first outlet 334. The material is heated twice during the pumping process of the first pump 3. The heating process is gradual and thorough. The heating is carried out using liquid, which makes the heating process gentle and suitable for heating hazardous chemicals, thus reducing the heating risk.

[0036] Furthermore, the second liquid inlet 322 and the second liquid outlet 323 are both arranged at the top of the first rod 32; a liquid distribution pipe 324 is provided inside the first rod 32, the first end of the liquid distribution pipe 324 is connected to the second liquid outlet 323, and the second end of the liquid distribution pipe 324 extends towards the bottom of the columnar heating chamber 321 in a direction close to the bottom of the first rod 32.

[0037] It can be understood that the heating liquid enters the columnar heating chamber 321 through the second inlet 322 and transfers heat to the material in the first rod chamber 331 through heat conduction. After heat exchange, the temperature of the heating liquid decreases and it is discharged from the distribution pipe 324 at the bottom of the columnar heating chamber 321 through the second outlet 323. The flow direction of the heating liquid is approximately from the top of the first rod 32 towards the first piston 31, while the flow direction of the material in the first rod chamber 331 is from the first piston 31 towards the first outlet 334, approximately from the first piston 31 towards the top of the first rod 32. The flow direction of the material is opposite to that of the heating liquid, so that the material to be heated first contacts the first rod 32 where the heating liquid has the lowest temperature. As the material continues to flow, the temperature of the first rod 32 increases the further away from the first piston 31, allowing the first rod 32 to continuously heat the material. It should be noted that the heating liquid can be a flowing heat storage medium such as hot water or hot oil.

[0038] Furthermore, the linkage assembly 5 includes a first linkage 51 and a second linkage 52. The first end of the first linkage 51 is hinged to the drive end of the linear drive mechanism 2, the second end of the first linkage 51 is hinged to the first end of the second linkage 52, and the second end of the second linkage 52 is hinged to the frame 1.

[0039] It is known that the linear drive mechanism 2 drives one end of the second link 52 to move, thereby driving the second link 52 and the first link 51 to move simultaneously. During the movement, the second link 52 drives the second pump 4 to work.

[0040] Furthermore, the first one-way valve 311 includes a ball, and the first piston 31 is provided with a main flow channel 312 and a branch flow channel 313. The first end of the main flow channel 312 is connected to the branch flow channel 313, the second end of the main flow channel 312 is connected to the first rodless chamber 332, and the end of the branch flow channel 313 away from the main flow channel 312 is connected to the first rod chamber 331. The upper end of the main flow channel 312 is larger than the lower end, and the ball is arranged in the large end of the main flow channel 312 and abuts against the small end of the main flow channel 312.

[0041] It is known that the sphere presses against the main flow channel 312 under the action of gravity. When the first piston 31 moves downward, the volume of the first rodless chamber 332 decreases and the pressure increases, while the volume of the first rod chamber 331 increases and the pressure decreases. The pressure is higher at the end of the sphere near the first rodless chamber 332 and lower at the end of the sphere near the first rod chamber 331. The sphere moves towards the end of the first rod chamber 331, connecting the main flow channel 312 with the branch channel 313. The first one-way valve 311 opens, and the material flows from the main flow channel 312 to the branch channel 313, thus allowing the material to flow from the first rodless chamber 312 to the branch channel 313. The first rodless chamber 332 enters the first rod chamber 331. When the first piston 31 moves upward, the volume of the first rodless chamber 332 increases and the volume of the first rod chamber 331 decreases. The pressure on the end of the ball near the first rodless chamber 332 is low, and the pressure on the end of the ball near the first rod chamber 331 is high. The ball moves toward the end of the first rodless chamber 332 and abuts against the main flow channel 312, causing the main flow channel 312 to disconnect from the branch channel 313. The first one-way valve 311 closes, thereby preventing the material from flowing back from the first rod chamber 331 into the first rodless chamber 332 and preventing backflow.

[0042] The first one-way valve 311 also includes an elastic element arranged in the main flow channel 312. One end of the elastic element abuts against the side wall of the main flow channel 312, and the other end abuts against the ball. The elastic element allows the ball to press against the inner wall of the main flow channel 312, achieving a seal on the one-way valve. This means the one-way valve can remain sealed without relying on the weight of the ball, allowing the first pump 3 to be arranged vertically or horizontally, thus increasing its applicability. In this embodiment, the elastic element is a compression coil spring. In other embodiments of this invention, the elastic element can also be a gas spring, an elastic sheet, a rubber spring, or other components or structures capable of providing elastic potential energy.

[0043] Furthermore, the second pump 4 includes a second piston 41, a second rod 42, a second cylinder 43, and a slider 44. The second cylinder 43 is mounted on the frame 1. The second piston 41 is slidably connected inside the second cylinder 43, and the second piston 41 separates a second rod-side chamber 431 and a second rodless chamber 432 within the second cylinder 43. The first end of the second rod 42 is connected to the second piston 41, and the second end of the second rod 42 extends out of the second cylinder 43 and is hinged to the slider 44. The slider 44 is slidably connected to the first connecting rod 5. 1. The second piston 41 is provided with a third check valve 411 for controlling the unidirectional flow of material from the second rodless chamber 432 to the second rod chamber 431; the second cylinder 43 is provided with a second inlet 433, a second outlet 434 and a fourth check valve 435. The second inlet 433 is connected to the second rodless chamber 432, the second outlet 434 is connected to the second rod chamber 431, and the fourth check valve 435 is arranged on the second cylinder 43, and the fourth check valve 435 is arranged in series with the second inlet 433.

[0044] It can be understood that the linear drive mechanism 2 drives the first connecting rod 51 and the second connecting rod 52 to swing, which in turn drives the slider 44 and the second rod body 42 to move, and drives the second piston 41 to reciprocate within the second cylinder 43. When the second piston 41 moves downward, the third one-way valve 411 opens and the fourth one-way valve 435 closes, allowing material in the second rodless chamber 432 to enter the second rod chamber 431 through the third one-way valve 411 and be discharged through the second outlet 434. When the second piston 41 moves upward, the third one-way valve 411 closes and the fourth one-way valve 435 opens, allowing external material to enter the second rodless chamber 432 through the second inlet 433, and the material in the second rod chamber 431 to be discharged through the second outlet 434. As the linear drive mechanism 2 drives the first connecting rod 51 and the second connecting rod 52 to swing continuously, it drives the second rod body 42 and the second piston 41 to move continuously, thereby causing the second pump 4 to continuously pump material. The flow cross-sectional area of ​​the second rodless chamber 432 is twice the flow cross-sectional area of ​​the second rod chamber 431, so that the amount of material discharged by the second piston 41 when it moves downward and upward is equal, so that the second pump 4 can continuously and stably pump material during operation.

[0045] It should be noted that a heating component 6 is also arranged on the outside of the second pump 4, which heats and keeps the material pumped by the second pump 4 warm.

[0046] It should be noted that the position of the second pump 4 on the frame 1 is adjustable. The closer the second pump 4 is to the first pump 3, the greater the amplitude of the swing of the second connecting rod 52 driving the slider 44 and the second piston 41, and the more material is pumped out in a single reciprocating stroke. By adjusting the position of the second pump 4 on the frame 1, the ratio of the material pumped out by the first pump 3 and the second pump 4 can be adjusted.

[0047] Furthermore, two second pumps 4 are arranged, with the two second pumps 4 respectively arranged on both sides of the first pump 3, and two connecting rod assemblies 5 are arranged corresponding to the second pumps 4; one of the second pumps 4 is equipped with a heating assembly 6, which is arranged on the outside of the second cylinder 43.

[0048] It is understood that by arranging two second pumps 4, the device can simultaneously pump three different types of materials. The pumping device is integrated, allowing the first pump 3 and the two second pumps 4 to work collaboratively. Synchronous operation is achieved during start-up and shutdown, ensuring that the pumped material head and tail are strictly proportioned, reducing material waste and improving material utilization efficiency. Of course, during use, only the first pump 3, only the second pump 4, or any two of the first pump 3 and the two second pumps 4 can be used. It should be noted that in some other embodiments of this invention, multiple second pumps 4 can be arranged. Multiple second pumps 4 can be arranged individually corresponding to the connecting rod assembly 5, or multiple second pumps 4 can be arranged corresponding to the same connecting rod assembly 5, with the same connecting rod assembly 5 simultaneously driving multiple second pumps 4 to work.

[0049] The working process and basic principle of this utility model are as follows:

[0050] Before operation, hot water pipes are connected to the first liquid inlet 611 and the first liquid outlet 612 of the heating component 6. Hot water is introduced into the annular heating chamber 613, and the hot water after heat exchange is discharged from the first liquid outlet 612. Hot water pipes are connected to the second liquid inlet 322 and the second liquid outlet 323. Hot water is introduced into the columnar heating chamber 321, and the hot water after heat exchange is discharged from the distribution pipe 324 through the second liquid outlet 323. During operation, the linear drive mechanism 2 drives the first rod 32 and the first piston 31 upwards, the first one-way valve 311 closes, and the second one-way valve 335 opens. Material enters the first rodless chamber 332 through the second one-way valve 335, and the heating component 6 heats and maintains the temperature of the material in the first rodless chamber 332. The linear drive mechanism 2 then drives the first rod 32 and the first piston 31 downwards, the first one-way valve 311 opens, and the second one-way valve 335 closes. Material enters the first rod chamber 331 from the first rodless chamber 332 through the first one-way valve 311, and some material is temporarily stored in the first rod chamber 331. In section 31, another portion of the material is discharged from the first discharge port 334. As the material passes through the first rod chamber 331, the heating assembly 6 and the first rod 32 simultaneously heat and maintain the material in the first rod chamber 331, achieving double heating during the conveying process. When the linear drive mechanism 2 drives the first rod 32 and the first piston 31 upward again, the first one-way valve 311 closes, and the second one-way valve 335 opens. The material in the first rod chamber 331 is pumped out from the first discharge port 334, and external material continues to enter the first rodless chamber 332 through the second one-way valve 335, thus repeating the process. The first piston 31 can pump material both upward and downward.

[0051] The linear drive mechanism 2 moves the first rod 32 while simultaneously moving the first connecting rod 51 and the second connecting rod 52. When the second connecting rod 52 moves, it drives the second rod 42 and the second piston 41 via the slider 44. The main difference between the second pump 4 and the first pump 3 is that the second pump 4 has an additional slider 44. The working principle and process of the second pump 4 and the first pump 3 are basically the same, and will not be elaborated here. It should be noted that the closer the second pump 4 is to the first pump 3, the greater the amplitude of movement of the second piston 41 driven by the second connecting rod 52, and the more material is pumped out in the same reciprocating stroke. Therefore, by adjusting the distance between the second pump 4 and the first pump 3, the ratio of the volume of material pumped by the second pump 4 and the first pump 3 can be adjusted. Thus, by adjusting the position of the second pump 4, the ratio of the material pumped by the first pump 3 and the second pump 4 can be adjusted.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A proportional delivery pump that combines heating and heat preservation, characterized in that: It includes a frame (1), a linear drive mechanism (2), a first pump (3), a second pump (4), and a linkage assembly (5), wherein the linear drive mechanism (2) is mounted on the frame (1); The first pump (3) includes a first piston (31), a first rod (32) and a first cylinder (33). The first cylinder (33) is mounted on the frame (1). The first piston (31) is slidably connected inside the first cylinder (33). The first piston (31) separates a first rod chamber (331) and a first rodless chamber (332) inside the first cylinder (33). The first end of the first rod (32) is connected to the first piston (31). The second end of the first rod (32) extends out of the first cylinder (33) and is connected to the drive end of the linear drive mechanism (2). The first piston (31) is provided with a first one-way valve (311) to control the material to flow unidirectionally from the first rodless chamber (332) to the first rod chamber (331). The first cylinder (33) is provided with a first feed inlet (333), a first discharge outlet (334) and a second check valve (335). The first feed inlet (333) is connected to the first rodless chamber (332), and the first discharge outlet (334) is connected to the first rod chamber (331). The second check valve (335) is arranged on the first cylinder (33) and is connected in series with the first feed inlet (333). The first end of the linkage assembly (5) is hinged to the linear drive mechanism (2), and the second end of the linkage assembly (5) passes over the second pump (4) and is hinged to the frame (1); The second pump (4) is installed on the frame (1) along the height direction. The telescopic end of the second pump (4) is connected to the connecting rod assembly (5). The second pump (4) slides and is positioned along the width direction of the frame (1). It also includes a heating assembly (6), which includes a spacer (61). The spacer (61) is provided with a first liquid inlet (611) and a first liquid outlet (612). The spacer (61) is arranged around the outer periphery of the first cylinder (33), and the spacer (61) and the outer periphery of the first cylinder (33) enclose an annular heating cavity (613). The first liquid inlet (611) and the first liquid outlet (612) are both connected to the annular heating cavity (613). The linkage assembly (5) includes a first link (51) and a second link (52). The first end of the first link (51) is hinged to the drive end of the linear drive mechanism (2). The second end of the first link (51) is hinged to the first end of the second link (52). The second end of the second link (52) is hinged to the frame (1).

2. A proportional delivery pump with both heating and heat preservation functions according to claim 1, characterized in that: The flow area of ​​the first rodless cavity (332) is twice the flow area of ​​the first rod cavity (331).

3. A proportional delivery pump with both heating and heat preservation functions according to claim 1, characterized in that: The first liquid inlet (611) is located at the end of the sleeve (61) away from the first rod (32), and the first liquid outlet (612) is located at the end of the sleeve (61) close to the first rod (32).

4. A proportional delivery pump with both heating and heat preservation functions according to claim 1, characterized in that: The linear drive mechanism (2) is one of a hydraulic cylinder, an electric push rod, or a pneumatic cylinder.

5. A proportional delivery pump that combines heating and heat preservation according to any one of claims 1-4, characterized in that: The first rod (32) has a columnar heating cavity (321) inside, and a second liquid inlet (322) and a second liquid outlet (323) are provided on the first rod (32). Both the second liquid inlet (322) and the second liquid outlet (323) are connected to the columnar heating cavity (321).

6. A proportional delivery pump with both heating and heat preservation functions according to claim 5, characterized in that: The second liquid inlet (322) and the second liquid outlet (323) are both arranged at the top of the first rod (32); a liquid distribution pipe (324) is provided inside the first rod (32), the first end of the liquid distribution pipe (324) is connected to the second liquid outlet (323), and the second end of the liquid distribution pipe (324) extends towards the bottom of the columnar heating cavity (321) in a direction close to the bottom of the first rod (32).

7. A proportional delivery pump that combines heating and heat preservation according to any one of claims 1-4, characterized in that: The first one-way valve (311) includes a ball. The first piston (31) is provided with a main flow channel (312) and a branch flow channel (313). The first end of the main flow channel (312) is connected to the branch flow channel (313), and the second end of the main flow channel (312) is connected to the first rodless chamber (332). The end of the branch flow channel (313) away from the main flow channel (312) is connected to the first rod chamber (331). The upper end of the main flow channel (312) is larger than the lower end. The ball is arranged in the large end of the main flow channel (312) and abuts against the small end of the main flow channel (312).

8. A proportional delivery pump with both heating and heat preservation functions according to claim 1, characterized in that: The second pump (4) includes a second piston (41), a second rod (42), a second cylinder (43), and a slider (44). The second cylinder (43) is mounted on the frame (1). The second piston (41) is slidably connected inside the second cylinder (43), and the second piston (41) separates a second rod chamber (431) and a second rodless chamber (432) inside the second cylinder (43). The first end of the second rod (42) is connected to the second piston (41), and the second end of the second rod (42) extends out of the second cylinder (43) and is hinged to the slider (44). The slider (44) is slidably connected to the first connecting rod (51). The second piston (41) is provided with a third check valve (411) for controlling the material to flow unidirectionally from the second rodless chamber (432) to the second rod chamber (431); The second cylinder (43) is provided with a second inlet (433), a second outlet (434) and a fourth check valve (435). The second inlet (433) is connected to the second rodless chamber (432), and the second outlet (434) is connected to the second rod chamber (431). The fourth check valve (435) is arranged on the second cylinder (43) and is connected in series with the second inlet (433).

9. A proportional delivery pump with heating and heat preservation functions according to claim 8, characterized in that: Two second pumps (4) are arranged, and the two second pumps (4) are respectively arranged on both sides of the first pump (3). The connecting rod assembly (5) is arranged in two corresponding to the second pumps (4). A heating component (6) is provided on one of the second pumps (4), and the heating component (6) is arranged on the outside of the second cylinder (43).

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