A polyvinyl chloride sheath material mixing tank convenient to clean

Abstract

This utility model discloses a mixing tank for easy-to-clean polyvinyl chloride (PVC) sheathing material, relating to the field of mixing tank technology. It includes: a mixing tank body, a support frame, a cooling pump and coil, a first flange, a second flange, and a hose. A water collection frame is installed on the outer wall of the support frame, and a cleaning water pump is installed on the outer wall of the water collection frame. A stainless steel pipe is installed at the outlet of the cleaning water pump, and a second solenoid valve is installed on the inner wall of the stainless steel pipe. This utility model utilizes a cleaning mechanism, with the first and second flanges connected. The outlet of the hose moves into the water collection frame, then the cleaning water pump operates, and the second solenoid valve operates, allowing flow within the stainless steel pipe. With the discharge pipe closed, clean water is injected into the mixing tank body. The mixing shaft then rotates, cleaning the mixing tank body, and the cleaned water is discharged through the discharge pipe.

Description

Technical Field

[0001] This utility model relates to the field of mixing tank technology, specifically a mixing tank for polyvinyl chloride sheath material that is easy to clean. Background Technology

[0002] The PVC sheath mixing tank is a specialized piece of equipment used to prepare PVC cable sheath materials. Its core function is to uniformly disperse PVC resin with various additives (such as stabilizers, plasticizers, flame retardants, etc.) through a mixing process to form a dry mix or pre-plasticized material that meets the performance requirements of cable sheaths. The PVC sheath mixing tank is an industrial mixing device specifically used in the raw material pretreatment stage of PVC sheath material production. Through mechanical stirring and hot mixing processes, PVC resin and additives (such as lubricants, impact modifiers, fillers, etc.) are uniformly mixed to form a homogeneous material.

[0003] Patent document CN218358816U discloses a mixing tank, which includes a mixing hopper and a feeding hopper. The mixing hopper has inlets around its upper perimeter, and a detachable screw conveyor is installed at each inlet. The feeding hopper is located above the screw conveyor. The tank is characterized by: a motor mounted above the mixing hopper; a rotating rod connected below the motor; the rotating rod extending vertically into the mixing hopper; a spiral blade positioned near the lower end of the rotating rod to lift the material at the bottom; and a circular array of multiple stirring blades at the end of the rotating rod. An outlet with a discharge valve is located at the bottom of the mixing hopper. This device can transport the material at the bottom upwards through the spiral stirring blades, thereby achieving dual stirring in both vertical and horizontal directions.

[0004] However, the mixing tank in the aforementioned published literature mainly considers achieving dual mixing in both vertical and horizontal directions, which makes it inconvenient to clean the inside of the mixing tank body.

[0005] Therefore, it is necessary to develop a cleaning mechanism that can clean the interior of the mixing tank. Summary of the Invention

[0006] The purpose of this utility model is to provide a mixing tank for polyvinyl chloride sheathing material that is easy to clean, so as to solve the technical problem mentioned in the background art of enabling the mixing tank for polyvinyl chloride sheathing material to have a cleaning function.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a mixing tank for easy-to-clean polyvinyl chloride sheathing material, comprising: a mixing tank body, a support frame, a cooling pump and a coil, wherein the outer wall of the mixing tank body is provided with a cleaning mechanism, which is used to clean the interior of the mixing tank body;

[0008] The cleaning mechanism includes a first flange, a second flange, and a hose. The first flange is installed on the outer wall of the coil, the hose is provided on the outer wall of the first flange, the second flange is installed on the outer wall of the hose, a water collection frame is installed on the outer wall of the support frame, a cleaning water pump is installed on the outer wall of the water collection frame, and the inlet end of the cleaning water pump extends into the interior of the water collection frame. A stainless steel pipe is installed on the outlet end of the cleaning water pump, and one end of the stainless steel pipe extends into the interior of the mixing tank body. A second solenoid valve is installed on the inner wall of the stainless steel pipe.

[0009] Preferably, an electrical control box is installed on the outer wall of the mixing tank body, the support frame is located at the bottom of the mixing tank body, a mixing motor is installed on the top of the mixing tank body, a mixing shaft is installed at the output end of the mixing motor, a feed chute is provided on the top of the mixing tank body, a hinged sealing cover is installed on the top of the mixing tank body, a cooling pump is installed on the outer wall of the mixing tank body, a coil is installed at the outlet end of the cooling pump and the coil is located inside the mixing tank body, a discharge pipe is installed at the bottom of the mixing tank body, a first solenoid valve is installed on the inner wall of the discharge pipe, and a heating component is installed on the inner wall of the mixing tank body.

[0010] Preferably, the top of the mixing tank body is provided with an auxiliary mechanism, which is used to facilitate the addition of medicine during the cleaning of the inside of the mixing tank body.

[0011] Preferably, the auxiliary mechanism includes a liquid tank, a dispensing pipe, and a third solenoid valve, wherein the liquid tank is located on top of the mixing tank body.

[0012] Preferably, the top of the liquid medicine tank is provided with a medicine inlet trough, the bottom of the liquid medicine tank is provided with a medicine outlet pipe, one end of the medicine outlet pipe extends into the interior of the mixing tank body, and the medicine outlet pipe communicates with the interior of the liquid medicine tank. A third solenoid valve is installed on the inner wall of the medicine outlet pipe.

[0013] Preferably, the inner wall of the medicine tank is equipped with an inclined plate.

[0014] Preferably, the inner wall of the mixing tank body is provided with a fitting groove, and a rubber sealing ring is installed on the inner wall of the fitting groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model uses a cleaning mechanism to clean the interior of the mixing tank body. Existing mixing tank bodies are not convenient to clean, so improvements are needed. First, the material in the mixing tank body is emptied, collected using cooling water, and then transferred back to the mixing tank body for cleaning. First, the first flange and the second flange are connected. Then, the water outlet of the hose is moved into the inside of the water collection frame. When the water collection frame is full, the hose is removed from the water collection frame and placed into another collection container. Then, the cleaning water pump is activated, and the second solenoid valve is activated, allowing the stainless steel pipe to circulate. The discharge pipe is in a closed state, and clean water is injected into the mixing tank body. Then, the mixing shaft rotates to clean the mixing tank body, and the cleaned water is discharged through the discharge pipe.

[0017] 2. This utility model, by installing an auxiliary mechanism, facilitates the addition of cleaning solution during the cleaning of the mixing tank body. Cleaning with water alone is not efficient enough, so a special cleaning agent (such as water-based or solvent-based, selected according to the PVC formula) needs to be added. The cleaning solution is added to the cleaning solution tank through the inlet trough and stored in the cleaning solution tank, which is equipped with a scale on the outside. Then, the cleaning solution is transported to the outlet pipe through the inclined plate. Subsequently, the third solenoid valve operates to allow the internal flow of the outlet pipe, thus transporting the cleaning solution to the mixing tank body. Then, the cleaning solution is added to the water and stirred to fully dissolve the residue. Finally, the cleaning water is discharged, thus facilitating the cleaning of the mixing tank body. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the mixing tank body of this utility model;

[0019] Figure 2 This is a schematic diagram of the front structure of the mixing tank body of this utility model;

[0020] Figure 3 This is a schematic diagram of the front structure of the water collection frame of this utility model;

[0021] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Mixing tank body; 2. Electrical control box; 3. Support frame; 4. Mixing motor; 5. Mixing shaft; 6. Feed chute; 7. Hinge sealing cover; 8. Cooling pump; 9. Coil; 10. Discharge pipe; 11. First solenoid valve; 12. Heating component; 13. First flange; 14. Second flange; 15. Hose; 16. Water collection frame; 17. Cleaning water pump; 18. Stainless steel pipe; 19. Second solenoid valve; 20. Medicine tank; 21. Medicine inlet tank; 22. Medicine outlet pipe; 23. Third solenoid valve; 24. Fitting groove; 25. Rubber sealing ring; 26. Inclined plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Please see Figure 1 and Figure 2A mixing tank for easy-to-clean polyvinyl chloride (PVC) sheathing material includes: a mixing tank body 1, a support frame 3, a cooling pump 8, and a coil 9. An electrical control box 2 is mounted on the outer wall of the mixing tank body 1. The support frame 3 is located at the bottom of the mixing tank body 1. A mixing motor 4 is mounted on the top of the mixing tank body 1. A mixing shaft 5 is mounted on the output end of the mixing motor 4. A feed chute 6 is provided on the top of the mixing tank body 1. A hinged sealing cover 7 is mounted on the top of the mixing tank body 1. A cooling coil 9 is mounted on the outer wall of the mixing tank body 1. The outlet of the cooling pump 8 is equipped with a coil 9, which is located inside the mixing tank body 1. A discharge pipe 10 is installed at the bottom of the mixing tank body 1, and a first solenoid valve 11 is installed on the inner wall of the discharge pipe 10. A heating component 12 is installed on the inner wall of the mixing tank body 1. According to the formula ratio, PVC resin, plasticizer (such as DOP), stabilizer (such as calcium-zinc stabilizer), filler (such as calcium carbonate), and other raw materials are weighed. The hinged sealing cover 7 is opened, and solid and liquid raw materials are added sequentially to the mixture. In the mixing tank body 1, the hinge sealing cover 7 is closed, and the mixing motor 4 is started, causing the mixing shaft 5 to rotate, so that the raw materials are initially dispersed. The plasticizer is fully penetrated into the PVC resin by using shear force. Then, the heating component 12 (electric heating wire) is started. The mixing tank body 1 is equipped with a temperature sensor, and the heating component 12 is set to a heating temperature of 160-180℃. The mixture is continuously stirred and the temperature is monitored. When the material reaches the plasticizing temperature, it is maintained for 10-15 minutes to ensure complete plasticization. The heating component 12 is then turned off, and the cooling pump 8 is started. The water inlet of the cooling pump 8 is connected to the external cooling water and the cooling water is circulated through the coil 9, thereby absorbing heat in the mixing tank body 1. The water outlet of the coil 9 is located outside the mixing tank body 1, and the coil 9 is located behind the mixing shaft 5, so that the mixing shaft 5 will not touch the coil 9 when it rotates. Then, the material temperature is reduced to 50-80℃, and the first solenoid valve 11 is opened to discharge the plasticized PVC sheath material through the discharge pipe 10.

[0027] Please see Figure 2 and Figure 3The mixing tank body 1 has a cleaning mechanism on its outer wall for cleaning the interior of the mixing tank body 1. The cleaning mechanism includes a first flange 13, a second flange 14, and a hose 15. The first flange 13 is installed on the outer wall of the coil 9, and the hose 15 is installed on the outer wall of the first flange 13. The second flange 14 is installed on the outer wall of the hose 15. A water collection frame 16 is installed on the outer wall of the support frame 3, and a cleaning water pump 17 is installed on the outer wall of the water collection frame 16. The inlet end of the cleaning water pump 17 extends into the interior of the water collection frame 16, and a stainless steel pipe 18 is installed on the outlet end of the cleaning water pump 17. One end of the stainless steel pipe 18 extends into the interior of the mixing tank body 1, and a second solenoid valve 19 is installed on the inner wall of the stainless steel pipe 18. The existing mixing tank body 1 cannot easily access the interior of the mixing tank body 1. The material in the mixing tank body 1 is first emptied, collected using cooling water, and then transferred back to the mixing tank body 1 for cleaning. First, the first flange 13 and the second flange 14 are connected. Then, the water outlet of the hose 15 is moved into the water collection frame 16. When the water collection frame 16 is full, the hose 15 is removed from the water collection frame 16 and placed into another collection container. Then, the cleaning water pump 17 is activated, and the second solenoid valve 19 is activated, allowing the stainless steel pipe 18 to circulate while the discharge pipe 10 is closed. Clean water is then injected into the mixing tank body 1. Then, the mixing shaft 5 rotates and stirs for 10-20 minutes to clean the mixing tank body 1, and the cleaned water is discharged through the discharge pipe 10.

[0028] Please see Figure 3 and Figure 4 The mixing tank body 1 has an auxiliary mechanism on its top. This mechanism facilitates the addition of chemicals during cleaning of the interior of the mixing tank body 1. The auxiliary mechanism includes a chemical tank 20, a dispensing pipe 22, and a third solenoid valve 23. The chemical tank 20 is located on the top of the mixing tank body 1. A chemical inlet trough 21 is located on the top of the chemical tank 20. A dispensing pipe 22 is installed at the bottom of the chemical tank 20, with one end extending into the interior of the mixing tank body 1 and communicating with the interior of the chemical tank 20. The third solenoid valve 23 is installed on the inner wall of the dispensing pipe 22. An inclined plate 26 is installed on the inner wall of the chemical tank 20. A fitting groove 24 is provided on the inner wall of the mixing tank body 1. Equipped with a rubber sealing ring 25, cleaning with only water is not efficient enough, so a special cleaning agent (such as water-based or solvent-based, selected according to the PVC formula) needs to be added. The solution is added to the solution tank 20 through the inlet tank 21 and the solution tank 20 is equipped with a scale on the outside. Then, the solution is transported to the outlet pipe 22 through the inclined plate 26. Then, the third solenoid valve 23 is activated to allow the flow inside the outlet pipe 22, and the solution is transported to the mixing tank body 1. Then, the solution is added to the water and stirred for 15-20 minutes to fully dissolve the residue. Finally, the water after cleaning is discharged, which facilitates the cleaning of the mixing tank body 1.

[0029] Working principle: Weigh PVC resin, plasticizer (such as DOP), stabilizer (such as calcium zinc stabilizer), filler (such as calcium carbonate), and other raw materials according to the formula ratio. Open the hinged sealing cover 7 and add solid and liquid raw materials sequentially into the mixing tank body 1. Close the hinged sealing cover 7 and start the mixing motor 4, causing the mixing shaft 5 to rotate, initially dispersing the raw materials. Shear force is used to ensure the plasticizer fully penetrates the PVC resin. Subsequently, the heating component 12 (electric heating wire) is activated. A temperature sensor is installed inside the mixing tank body 1, and the heating component 12 is set to a temperature of 160-180℃. Continuous stirring and temperature monitoring are maintained. Once the material reaches the plasticizing temperature, it is kept at 10- After 15 minutes to ensure complete plasticization, the heating component 12 is turned off, and the cooling pump 8 is started. The inlet of the cooling pump 8 is connected to the external cooling water and circulates the cooling water through the coil 9, thereby absorbing heat from the mixing tank body 1. The outlet of the coil 9 is located outside the mixing tank body 1, and the coil 9 is located behind the mixing shaft 5, so that the mixing shaft 5 will not touch the coil 9 when it rotates. Then, the material temperature is reduced to 50-80℃, and the first solenoid valve 11 is opened to discharge the plasticized PVC sheath material through the discharge pipe 10. The existing mixing tank body 1 is not easy to clean, so it needs to be improved. First, the material in the mixing tank body 1 is discharged... The mixture is initially empty, then collected using cooling water and transferred back to the mixing tank body 1 for cleaning. First, the first flange 13 and the second flange 14 are connected. Then, the outlet end of the hose 15 is moved into the water collection frame 16. Once the water collection frame 16 is full, the hose 15 is removed from the frame and placed into another collection container. Next, the cleaning water pump 17 operates, and the second solenoid valve 19 operates, allowing water to flow through the stainless steel pipe 18 while the discharge pipe 10 is closed. Clean water is then injected into the mixing tank body 1. The mixing shaft 5 then rotates and stirs for 10-20 minutes to clean the mixing tank body 1. The cleaned water is then discharged through the discharge pipe. The cleaning efficiency of simply rinsing with water after the discharge from pipe 10 is not high, so a special cleaning agent (such as water-based or solvent-based, depending on the PVC formula) needs to be added. The cleaning solution is added to the cleaning tank 20 through the inlet tank 21 and the cleaning tank 20 is equipped with a scale on the outside. Then, the cleaning solution is transported to the outlet pipe 22 through the inclined plate 26. Then, the third solenoid valve 23 is activated to allow the internal flow of the outlet pipe 22, and the cleaning solution is transported to the mixing tank body 1. The cleaning solution is then added to the water and stirred for 15-20 minutes to fully dissolve the residue. Finally, the water after cleaning is discharged, which facilitates the cleaning of the mixing tank body 1.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mixing tank for easy-to-clean polyvinyl chloride sheathing material, characterized in that, Includes: mixing tank body (1), support frame (3), cooling pump (8) and coil (9), the outer wall of the mixing tank body (1) is provided with a cleaning mechanism, the cleaning mechanism is used to clean the inside of the mixing tank body (1); The cleaning mechanism includes a first flange (13), a second flange (14), and a hose (15). The outer wall of the coil (9) is fitted with the first flange (13), the outer wall of the first flange (13) is fitted with the hose (15), the outer wall of the hose (15) is fitted with the second flange (14), the outer wall of the support frame (3) is fitted with a water collection frame (16), the outer wall of the water collection frame (16) is fitted with a cleaning water pump (17), and the inlet end of the cleaning water pump (17) extends into the interior of the water collection frame (16). The outlet end of the cleaning water pump (17) is fitted with a stainless steel pipe (18), and one end of the stainless steel pipe (18) extends into the interior of the mixing tank body (1). The inner wall of the stainless steel pipe (18) is fitted with a second solenoid valve (19).

2. The mixing tank for easy-to-clean polyvinyl chloride sheathing material according to claim 1, characterized in that: An electrical control box (2) is installed on the outer wall of the mixing tank body (1). The support frame (3) is located at the bottom of the mixing tank body (1). A mixing motor (4) is installed on the top of the mixing tank body (1). A mixing shaft (5) is installed at the output end of the mixing motor (4). A feed trough (6) is provided on the top of the mixing tank body (1). A hinge sealing cover (7) is installed on the top of the mixing tank body (1). A cooling pump (8) is installed on the outer wall of the mixing tank body (1). A coil (9) is installed at the outlet end of the cooling pump (8), and the coil (9) is located inside the mixing tank body (1). A discharge pipe (10) is installed at the bottom of the mixing tank body (1). A first solenoid valve (11) is installed on the inner wall of the discharge pipe (10). A heating component (12) is installed on the inner wall of the mixing tank body (1).

3. The mixing tank for easy-to-clean polyvinyl chloride sheathing material according to claim 1, characterized in that: The top of the mixing tank body (1) is provided with an auxiliary mechanism, which is used to facilitate the addition of medicine when cleaning the inside of the mixing tank body (1).

4. The easy-to-clean mixing tank for polyvinyl chloride sheathing material according to claim 3, characterized in that: The auxiliary mechanism includes a liquid tank (20), a dispensing pipe (22), and a third solenoid valve (23). The liquid tank (20) is located on top of the mixing tank body (1).

5. A mixing tank for easy-to-clean polyvinyl chloride sheathing material according to claim 4, characterized in that: The top of the liquid medicine tank (20) is provided with a medicine inlet trough (21), and the bottom of the liquid medicine tank (20) is provided with a medicine outlet pipe (22). One end of the medicine outlet pipe (22) extends into the interior of the mixing tank body (1), and the medicine outlet pipe (22) communicates with the interior of the liquid medicine tank (20). A third solenoid valve (23) is installed on the inner wall of the medicine outlet pipe (22).

6. A mixing tank for easy-to-clean polyvinyl chloride sheathing material according to claim 4, characterized in that: The inner wall of the liquid tank (20) is fitted with an inclined plate (26).

7. A mixing tank for easy-to-clean polyvinyl chloride sheathing material according to claim 1, characterized in that: The inner wall of the mixing tank body (1) is provided with a fitting groove (24), and a rubber sealing ring (25) is installed on the inner wall of the fitting groove (24).

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