Liquid raw material feeding device for preparing calcium-zinc stabilizer

Abstract

The utility model relates to a liquid raw material feeding device for preparing a calcium-zinc stabilizer, which comprises a barrel body, a liquid inlet channel, a liquid outlet channel, a cleaning liquid inlet channel and a cleaning liquid discharge channel are respectively arranged at two ends of the barrel body; wherein the stock solution inlet channel and the cleaning solution inlet channel are one-way inflow channels, and the stock solution outlet channel and the cleaning solution discharge channel are one-way outflow channels; and the piston assembly comprises a piston head, and the piston head is arranged in the cylinder in a sliding mode and is switched between a first state and a second state through reciprocating motion. Through double-state switching of linkage of the stock solution inlet channel, the stock solution outlet channel, the cleaning solution inlet channel and the cleaning solution discharge channel with the piston head, the internal space of the cylinder body can be automatically and timely cleaned after stock solution is discharged; the doping of different batches of raw materials is avoided, the components of the calcium-zinc stabilizer can always meet the formula requirements, and the product performance is stable.

Description

Technical Field

[0001] This utility model belongs to the field of liquid feeding technology, and specifically relates to a liquid raw material feeding device for the preparation of calcium-zinc stabilizers. Background Technology

[0002] Calcium-zinc stabilizers are key additives in plastic products such as polyvinyl chloride (PVC), and their thermal stability and weather resistance must be ensured through precise formulation. Traditional feeding devices, when feeding multiple batches, can easily cause residual raw materials to mix with new batches, leading to compositional shifts and affecting product quality stability. This is particularly problematic in high-end plastic products where consistent performance requirements are difficult to meet. Existing technologies lack efficient cleaning solutions for container residues, making it impossible to effectively address the adulteration problem. Utility Model Content

[0003] This invention addresses the problems of existing technologies by using an automatic cleaning structure to eliminate residues inside the container, ensuring accurate raw material composition. The specific technical solution is as follows:

[0004] A liquid feeder for preparing calcium-zinc stabilizers includes:

[0005] The cylinder has a raw liquid inlet channel, a raw liquid outlet channel, a cleaning liquid inlet channel, and a cleaning liquid discharge channel at both ends; wherein the raw liquid inlet channel and the cleaning liquid inlet channel are unidirectional inflow channels, and the raw liquid outlet channel and the cleaning liquid discharge channel are unidirectional outflow channels.

[0006] A piston assembly, the piston assembly including a piston head, the piston head being slidably disposed in the cylinder, switching between a first state and a second state through reciprocating motion;

[0007] In the first state, the piston head is pushed into the cylinder, the raw liquid outlet channel is opened to discharge the raw liquid, and the cleaning liquid inlet channel is opened to draw in the cleaning liquid.

[0008] In the second state, the piston head is pulled outward, the raw liquid inlet channel is opened to draw in the raw liquid, and the cleaning liquid outlet channel is opened to discharge the cleaning liquid.

[0009] As a further technical solution of this utility model, the cleaning fluid inlet channel has a spiral structure, which is used to make the cleaning fluid form a rotating water flow.

[0010] As a further technical solution of this utility model, the piston head includes a support body and two sealing plates, the support body is connected between the two sealing plates, and there is a gap between the support body and the cylinder to form an interception cavity.

[0011] As a further technical solution of this utility model, the outer wall of the sealing sheet is provided with an annular groove, and an elastic sealing ring is embedded in the annular groove.

[0012] As a further technical solution of this utility model, the piston assembly also includes a connecting rod and a handle. One end of the connecting rod is connected to the piston head, and the other end extends through the cylinder body. The handle is connected to the extended end of the connecting rod.

[0013] As a further technical solution of this utility model, the flow direction of the raw liquid inlet channel and the cleaning liquid inlet channel is from the outside of the cylinder to the inside; the flow direction of the raw liquid outlet channel and the cleaning liquid discharge channel is from the inside of the cylinder to the outside.

[0014] The beneficial effects of this utility model are as follows:

[0015] In this application, by switching between the raw liquid inlet channel, raw liquid outlet channel, cleaning liquid inlet channel, and cleaning liquid discharge channel in conjunction with the piston head, the internal space of the cylinder can be automatically and promptly cleaned after the raw liquid is discharged. This avoids the mixing of raw materials from different batches, ensures that the composition of the calcium-zinc stabilizer always meets the formulation requirements, stabilizes the product performance, and ensures that it can always play a consistent role in thermal stabilization in the processing of PVC and other plastic products, thereby improving the quality and reliability of plastic products and helping to meet the stringent requirements for additives in high-end plastic products. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of the liquid raw material feeding device for the preparation of calcium-zinc stabilizer is shown;

[0017] Figure 2 A schematic diagram of the internal structure of the liquid raw material feeding device for the preparation of calcium-zinc stabilizer is shown.

[0018] Figure 3 A schematic diagram of the piston head structure is shown.

[0019] Legend:

[0020] 100. Cylinder body; 110. Raw material inlet channel; 120. Raw material outlet channel; 130. Cleaning fluid inlet channel; 140. Cleaning fluid discharge channel; 200. Piston assembly; 210. Piston head; 211. Support body; 212. Sealing plate; 213. Annular groove; 214. Elastic sealing ring; 220. Connecting rod; 230. Handle. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0022] Figure 1 A schematic diagram of the overall structure of the liquid raw material feeding device for the preparation of calcium-zinc stabilizer is shown; Figure 1The liquid raw material feeding device for preparing calcium-zinc stabilizer includes a cylinder 100 and a piston assembly 200. One end of the piston assembly 200 is inserted into the cylinder 100 for pushing or drawing liquid, and the two work together to form an injection structure.

[0023] Figure 2 A schematic diagram of the internal structure of the liquid raw material feeding device for the preparation of calcium-zinc stabilizer is shown. Figure 2 In the cylinder 100, one end is provided with a raw liquid inlet channel 110 and a raw liquid outlet channel 120, and the other end is provided with a cleaning liquid inlet channel 130 and a cleaning liquid discharge channel 140. The raw liquid inlet channel 110, raw liquid outlet channel 120, cleaning liquid inlet channel 130, and cleaning liquid discharge channel 140 are all unidirectional flow channels. The flow direction of the raw liquid inlet channel 110 and the cleaning liquid inlet channel 130 is from the outside to the inside; the flow direction of the raw liquid outlet channel 120 and the cleaning liquid discharge channel 140 is from the inside to the outside. As the piston assembly 200 moves, the cleaning fluid discharge channel 130 and the cleaning fluid discharge channel 140 switch between a first state and a second state. In the first state, the raw liquid outlet channel 120 is open to discharge the raw liquid in the cylinder 100, and the cleaning fluid inlet channel 130 is open to draw the cleaning fluid into the cylinder 100. In the second state, the raw liquid inlet channel 110 is open to draw the raw liquid into the cylinder 100, and the cleaning fluid discharge channel 140 is open to discharge the cleaning fluid in the cylinder 100. It should be noted that "from the outside to the inside" here means that the liquid flows into the raw liquid inlet channel 110 from the outside of the cylinder 100, and vice versa.

[0024] In practical use, the raw liquid inlet channel 110 is connected to an external raw liquid source, enabling a continuous supply of raw liquid. The raw liquid outlet channel 120 is connected to an external liquid supply unit. The cleaning liquid inlet channel 130 is connected to an external cleaning liquid source, and the cleaning liquid discharge channel 140 is connected to an external waste liquid tank. That is, when the piston assembly 200 moves towards the cylinder 100, the raw liquid outlet channel 120 opens to push out the raw liquid in the cylinder 100 for quantitative feeding, while the cleaning liquid inlet channel 130 opens to draw in the cleaning liquid for timely cleaning of the internal space of the cylinder 100. Conversely, when the piston assembly 200 moves away from the cylinder 100, the raw liquid inlet channel 110 opens to draw the raw liquid into the cylinder 100 for secondary replenishment, and the cleaning liquid discharge channel 140 opens to promptly discharge the used cleaning liquid. This process repeats, automatically discharging the raw liquid after discharge. The timely cleaning of the internal space of the cylinder 100 avoids the mixing of raw materials from different batches, ensuring that the composition of the calcium-zinc stabilizer always meets the formulation requirements, making the product performance stable. It can always play a consistent role in thermal stability in the processing of PVC and other plastic products, improving the quality and reliability of plastic products, and helping to meet the strict requirements of high-end plastic products for additives. It prevents unknown chemical reactions and impurities caused by raw material mixing, reducing the risk of product quality problems. The cleaning liquid inlet channel 130 has a spiral structure. When the cleaning liquid flows in the spiral channel, it forms a rotating water flow into the container. This rotating water flow has a stronger flushing force and coverage range, which can more effectively impact the inner wall of the cylinder 100. It can more comprehensively cover all corners of the container, thereby more thoroughly cleaning the residual raw materials attached to the container wall.

[0025] See also Figure 2 The piston assembly 200 includes a piston head 210, a connecting rod 220, and a handle 230. The piston head 210 is slidably disposed in the cylinder 100. One end of the connecting rod 220 is connected to the piston head 210, and the other end extends through the cylinder 100. The handle 230 is connected to the extended end of the connecting rod 220. By operating the handle, the piston assembly 200 can be pulled to drive the piston head 210 to reciprocate within the cylinder 100 to achieve the transition between the first state and the second state.

[0026] Figure 3 A schematic diagram of the piston head 210 is shown; Figure 3In this design, the piston head 210 includes a support body 211 and two sealing plates 212. The support body 211 is connected between the two sealing plates 212, and a gap exists between the support body 211 and the cylinder 100 to form an interception cavity. The interception cavity allows liquid passing through the sealing plates 212 to be trapped, forming a multi-layered interception. An annular groove 213 is formed on the outer wall of the sealing plate 212, and an elastic sealing ring 214 is embedded within the annular groove 213. The elastic sealing ring 214 further enhances the sealing effect. The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it.

Claims

1. A liquid raw material feeding device for calcium-zinc stabilizer production, characterized by, include: The cylinder (100) has a raw liquid inlet channel (110), a raw liquid outlet channel (120), a cleaning liquid inlet channel (130), and a cleaning liquid discharge channel (140) at both ends, respectively; wherein the raw liquid inlet channel (110) and the cleaning liquid inlet channel (130) are unidirectional inflow channels, and the raw liquid outlet channel (120) and the cleaning liquid discharge channel (140) are unidirectional outflow channels; A piston assembly (200) includes a piston head (210) which is slidably disposed within a cylinder (100) and switches between a first state and a second state through reciprocating motion. In the first state, the piston head (210) is pushed into the cylinder (100), the raw liquid outlet channel (120) is opened to discharge the raw liquid, and the cleaning liquid inlet channel (130) is opened to draw in the cleaning liquid; In the second state, the piston head (210) is pulled outward, the original liquid inlet channel (110) is opened to draw in the original liquid, and the cleaning liquid discharge channel (140) is opened to discharge the cleaning liquid.

2. The calcium-zinc stabilizer production liquid feedstock dosing apparatus according to claim 1, characterized by: The cleaning fluid inlet channel (130) has a spiral structure, which is used to make the cleaning fluid form a rotating water flow.

3. The calcium-zinc stabilizer production liquid feedstock dosing apparatus according to claim 2, characterized by: The piston head (210) includes a support (211) and two sealing plates (212), the support (211) being connected between the two sealing plates (212), and a gap between the support (211) and the cylinder (100) to form an interception cavity.

4. The calcium-zinc stabilizer production liquid feedstock dosing apparatus according to claim 3, characterized by: The outer wall of the sealing plate (212) is provided with an annular groove (213), and an elastic sealing ring (214) is embedded in the annular groove (213).

5. The calcium-zinc stabilizer production liquid feedstock dosing apparatus according to claim 3, characterized by: The piston assembly (200) also includes a connecting rod (220) and a handle (230). One end of the connecting rod (220) is connected to the piston head (210), and the other end extends through the cylinder (100). The handle (230) is connected to the extended end of the connecting rod (220).

6. The calcium-zinc stabilizer production liquid feedstock dosing apparatus according to claim 3, characterized by: The flow direction of the raw liquid inlet channel (110) and the cleaning liquid inlet channel (130) is from the outside of the cylinder (100) to the inside; the flow direction of the raw liquid outlet channel (120) and the cleaning liquid discharge channel (140) is from the inside of the cylinder to the outside.

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