Catalyst feeding tank for PVC (polyvinyl chloride) preparation

Abstract

The utility model discloses a catalyst feeding tank for PVC (polyvinyl chloride) preparation in the technical field of catalyst feeding tanks, which comprises a proportioning tank and a feeding mechanism, the feeding mechanism is mounted at the top of the proportioning tank and comprises a support component and a quantitative feeding component, the support component is used for quantitative feeding of a catalyst, and the quantitative feeding component is arranged at the top of the support component. According to the scheme, through the structural design that the connecting screw pipe is in threaded fit with the connecting screw hole, the hopper can be connected and fixed to the top of the mounting base, the mounting base can further mount and dismount the hopper according to the use condition, cleaning and maintaining work can be conveniently conducted on the hopper, and meanwhile the service life of the hopper is prolonged. The hoppers with different sizes and specifications can be replaced according to the preparation conditions, flexible replacement of the hoppers, convenience in maintenance and precise control over the catalyst discharging process are achieved, the catalyst feeding tank is more suitable for the preparation process due to the advantages, and operation convenience and production efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of catalyst feeding tanks, in particular to a catalyst feeding tank for PVC preparation. Background Art

[0002] Catalysts are needed to accelerate the reaction and adjust the reaction mode during the preparation of PVC. The catalyst feeding tank is a container used to accurately measure and add catalysts. It is usually connected to equipment such as conveyor belts or pipelines, and can add solid or liquid catalysts to the reactor at a set rate and quantity. The purpose of using a feeding tank is to accurately control the amount of catalyst added, thereby optimizing the synthesis reaction of PVC and improving product quality and yield. The feeding tank has a variety of structural forms, which need to be selected according to the process requirements. Its accurate and controllable addition function is an indispensable part of the PVC synthesis process.

[0003] At present, the catalyst feed tank used in PVC preparation mainly adopts an integrated structure design. The advantage of this design is good integrity and high stability. The integrated structure ensures the overall firmness and stability of the catalyst feed tank during use, which helps prevent the structure from loosening or being damaged. However, during use, this integrated structure design also brings some problems:

[0004] 1) First, the existing catalyst feeding tank lacks flexibility and cannot be disassembled and connected to the dosing mechanism for quantitative catalyst feeding according to actual usage, which limits the flexibility of operators when maintenance, replacement or adjustment is required;

[0005] 2) Secondly, due to the defects of the integrated design, the dosing mechanism has poor stability when adding the catalyst, which may lead to uneven catalyst delivery, affecting the efficiency of the reaction and the quality of the product.

[0006] Based on this, we propose a catalyst feeding tank for PVC preparation to solve the above-mentioned problems. Utility Model Content

[0007] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0008] Therefore, the utility model aims to provide a catalyst feeding tank for preparation, which can solve the problems of poor structural flexibility and insufficient stability of the dosing mechanism of the existing catalyst feeding tank.

[0009] In order to solve the above technical problems, the utility model provides a catalyst feeding tank for preparation, which adopts the following technical scheme: comprising a proportioning tank and a feeding mechanism, the feeding mechanism is installed on the top of the proportioning tank, the feeding mechanism comprises a supporting assembly and a quantitative feeding assembly for quantitative feeding of the catalyst, the quantitative feeding assembly is arranged on the top of the supporting assembly, and the supporting assembly is also connected to a temporary storage near the top of the quantitative feeding assembly;

[0010] The proportioning tank comprises a metal tank body, a discharge valve is installed at the bottom of the metal tank body, and a water inlet pipe is connected to one side of the bottom of the metal tank body close to the discharge valve.

[0011] By adopting the above technical scheme, the scheme can connect and fix the support assembly to the top side of the metal tank body through the arc-shaped fixing plate installed at one end of the connecting frame plate, cooperate with the connecting screw hole opened through the middle of the mounting base, and the connecting screw tube installed at the bottom of the hopper. Because the connecting screw tube matches the connecting screw hole structure, and the connecting screw tube and the connecting screw hole are threadedly matched, the hopper can also be connected and fixed to the top of the mounting base, and the mounting base can also install and disassemble the hopper according to the usage, which is not only convenient for cleaning, maintenance and maintenance, but also can replace hoppers of different sizes and specifications according to the preparation conditions;

[0012] This solution uses guide slots respectively opened on both sides of the adjusting frame plate and a support adjustment plate installed at one end of the electric push rod. Since the support adjustment plate matches the guide slot structure and there is a sliding fit between the support adjustment plate and the guide slot, the support adjustment plate can be limitedly connected to the inside of the adjusting frame plate. By using the electric push rod installed on one side of the connecting frame, the electric push rod can drive the support adjustment plate to extend or retract inside the adjusting frame plate when powered on. When the leakage hole opened in the middle of the top of the support adjustment plate is aligned with the connection screw hole opened in the middle of the mounting base, the support adjustment plate can be moved to the inside of the adjusting frame plate. When the catalyst in the hopper is aligned, the catalyst in the hopper can be dropped into the inside of the quantitative leakage barrel. When the electric push rod drives the adjusting frame to extend, the material blocking cover plate movably hinged at the bottom of the quantitative leakage barrel can be opened by its own gravity without the limiting shielding of the limiting blocking frame, so that a certain amount of catalyst in the quantitative leakage barrel can be discharged into the feed tank port. Similarly, when the electric push rod drives the adjusting frame to retract, since the material blocking cover plate and the limiting blocking frame are in sliding contact, the limiting blocking frame can also play a role in closing and resetting the opened material blocking cover plate.

[0013] From the above, it can be seen that the catalyst feeding tank for preparation designed in this scheme realizes flexible replacement of the hopper, convenient maintenance and care, and precise control of the catalyst emission process. These advantages make the catalyst feeding tank more suitable for the preparation process and improve the convenience of operation and production efficiency.

[0014] Optionally, a feed tank opening is opened on the top of the metal tank body, and a plurality of groups of supporting columns are installed on the bottom of the metal tank body.

[0015] By adopting the above technical solution, the present solution uses a support column installed at the bottom of the metal tank body to support and fix the metal tank body.

[0016] Optionally, the support assembly includes an adjustment frame plate, two groups of support arm plates are connected to the bottom of one end of the adjustment frame plate, a connecting frame plate is installed between the ends of the two groups of support arm plates away from the adjustment frame plate, and an arc-shaped fixing plate is also provided at the end of the connecting frame plate away from the support arm plate.

[0017] By adopting the above technical solution, the solution can connect and fix the support assembly to the top side of the metal tank body by installing an arc-shaped fixing plate at one end of the connecting frame plate.

[0018] Optionally, guide slide grooves are respectively provided on both sides of the interior of the adjustment frame, a limit stop frame is installed at the bottom of one end of the adjustment frame, and a guide groove is also provided at one end of the limit stop frame.

[0019] By adopting the above technical solution, the solution uses a limit stop frame installed at the bottom of one end of the adjustment frame plate to block and reset the material stop cover plate when adjusting.

[0020] Optionally, the temporary storage includes a mounting base, a connecting screw hole is opened through the middle of the mounting base, a hopper is installed on the top of the mounting base, and a connecting screw tube is also connected to the bottom of the hopper. The connecting screw tube matches the connecting screw hole structure, and the connecting screw tube and the connecting screw hole are threadedly matched.

[0021] By adopting the above technical solution, this solution uses a connecting screw tube installed at the bottom of the hopper. Since the connecting screw tube matches the connecting screw hole structure and the connecting screw tube and the connecting screw hole are threadedly matched, the hopper can be connected and fixed to the top of the mounting base, and the mounting base can also install and disassemble the hopper according to usage.

[0022] Optionally, the quantitative feeding assembly includes an electric push rod, one end of which is provided with a support adjustment plate, the support adjustment plate matches the guide slide groove structure, and the support adjustment plate and the guide slide groove are in sliding fit.

[0023] By adopting the above technical solution, this solution uses a support adjustment plate installed at one end of the electric push rod. Since the support adjustment plate matches the guide slide groove structure and the support adjustment plate and the guide slide groove are slidably matched, the support adjustment plate can be limitedly connected to the inside of the adjustment frame plate.

[0024] Optionally, a leakage hole is formed through the top of the support adjustment plate, elastic rubber rings are arranged around the outside of the support adjustment plate near the leakage hole, and a quantitative leakage barrel is connected to the middle of the bottom of the support adjustment plate.

[0025] By adopting the above technical solution, the catalyst in the hopper can be dropped into the interior of the quantitative leakage cylinder through the leakage hole opened through the top of the supporting adjustment plate.

[0026] Optionally, a connecting frame is installed between the quantitative leakage barrel and the support adjustment plate, the connecting frame is fixedly connected to the output end of the electric push rod, and the bottom end of the quantitative leakage barrel is also movably hinged with a material blocking cover plate.

[0027] By adopting the above technical solution, the present solution can seal the opening at the bottom of the quantitative leakage barrel through the material blocking cover plate movably hinged at the bottom end of the quantitative leakage barrel.

[0028] In summary, the present invention has at least one of the following beneficial effects:

[0029] 1. This solution can connect and fix the support assembly to the top side of the metal tank body by installing an arc-shaped fixing plate at one end of the connecting frame plate, and cooperate with the connecting screw hole opened through the middle of the installation base, and the connecting screw tube installed at the bottom of the hopper. Because the connecting screw tube matches the connecting screw hole structure, and the connecting screw tube and the connecting screw hole are threaded, the hopper can also be connected and fixed to the top of the installation base, and the installation base can also install and disassemble the hopper according to the use situation, which is not only convenient for cleaning, maintenance and maintenance, but also can replace hoppers of different sizes and specifications according to the preparation situation;

[0030] 2. This solution uses guide slots opened on both sides of the adjusting frame and a support adjustment plate installed at one end of the electric push rod. Because the support adjustment plate matches the guide slot structure and the support adjustment plate and the guide slot are slidably matched, the support adjustment plate can be limitedly connected to the inside of the adjusting frame. The electric push rod installed on one side of the connecting frame can drive the support adjustment plate to extend or retract inside the adjusting frame when powered on. When the leakage hole opened in the middle of the top of the support adjustment plate is connected to the connection screw hole opened in the middle of the mounting base, the support adjustment plate can be connected to the inner side of the adjusting frame. When aligned, the catalyst inside the hopper can be dropped into the inside of the quantitative leakage barrel. When the electric push rod drives the adjusting frame to extend, the material blocking cover plate movably hinged at the bottom of the quantitative leakage barrel can be opened by its own gravity without the limiting shielding of the limiting blocking frame, so that a certain amount of catalyst inside the quantitative leakage barrel can be discharged into the feed tank port. Similarly, when the electric push rod drives the adjusting frame to retract, since there is a sliding contact between the material blocking cover plate and the limiting blocking frame, the limiting blocking frame can also play a role in closing and resetting the opened material blocking cover plate.

[0031] 3. The catalyst feeding tank for preparation designed in this scheme realizes flexible replacement of the hopper, convenient maintenance and care, and precise control of the catalyst discharge process. These advantages make the catalyst feeding tank more suitable for the preparation process and improve the convenience of operation and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0034] Figure 2 This is a schematic diagram of the structure of the feeding mechanism of the utility model;

[0035] Figure 3 This is a schematic diagram of the metal tank structure of the utility model;

[0036] Figure 4 This is a schematic diagram of splitting the temporary storage device of the utility model;

[0037] Figure 5 It is a schematic diagram of the structure of the quantitative feeding component of the utility model.

[0038] Description of reference numerals: 100, proportioning tank; 101, metal tank body; 101a, feed tank port; 101b, support column; 102, discharge valve; 103, water inlet pipe; 200, feeding mechanism; 201, support assembly; 201a, adjustment frame; 201a-1, guide slide; 201a-2, limit stop frame; 201a-3, guide groove; 201b, support arm plate; 201c, connecting frame; 201 d, arc-shaped fixed plate; 202, quantitative feeding assembly; 202a, electric push rod; 202b, support adjustment plate; 202b-1, leakage hole; 202b-2, elastic rubber ring; 202b-3, quantitative leakage barrel; 202b-3a, connecting frame; 202b-3b, material blocking cover; 203, temporary storage; 203a, mounting base; 203b, connecting screw hole; 203c, hopper; 203d, connecting screw tube. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-5 The utility model is described in further detail.

[0040] Embodiment 1, refer to Figure 1-3 The utility model discloses a catalyst feeding tank for PVC preparation.

[0041] The invention comprises a proportioning tank 100 and a feeding mechanism 200, wherein the feeding mechanism 200 is installed on the top of the proportioning tank 100, and the feeding mechanism 200 comprises a supporting assembly 201 and a quantitative feeding assembly 202 for quantitative feeding of the catalyst, wherein the quantitative feeding assembly 202 is arranged on the top of the supporting assembly 201, and a temporary storage 203 is also connected to the top of the supporting assembly 201 near the quantitative feeding assembly 202;

[0042] The proportioning tank 100 includes a metal tank body 101 , a discharge valve 102 is installed at the bottom of the metal tank body 101 , and a water inlet pipe 103 is also connected to one side of the bottom of the metal tank body 101 close to the discharge valve 102 .

[0043] A feed tank opening 101a is provided on the top of the metal tank body 101 , and a plurality of support columns 101b are installed at the bottom of the metal tank body 101 . The support columns 101b installed at the bottom of the metal tank body 101 are used to support and fix the metal tank body 101 .

[0044] Example 2, refer to Figure 3-4 In order to solve the problems of poor structural flexibility and insufficient stability of the dosing mechanism of the existing catalyst feeding tank in this embodiment, based on the same concept as the above-mentioned embodiment 1, the catalyst feeding tank for PVC preparation also includes:

[0045] The support assembly 201 includes an adjusting frame plate 201a, two groups of support arm plates 201b are connected to the bottom of one end of the adjusting frame plate 201a, a connecting frame plate 201c is installed between the ends of the two groups of support arm plates 201b away from the adjusting frame plate 201a, and an arc-shaped fixing plate 201d is also provided at the end of the connecting frame plate 201c away from the support arm plate 201b. By adding the arc-shaped fixing plate 201d at one end of the connecting frame plate 201c, the support assembly 201 can be connected and fixed to the top side of the metal tank body 101.

[0046] Guide grooves 201a-1 are respectively provided on both sides of the interior of the adjusting frame 201a, and a limit stop frame 201a-2 is installed at the bottom of one end of the adjusting frame 201a. A guide groove 201a-3 is also provided at one end of the limit stop frame 201a-2. The limit stop frame 201a-2 installed at the bottom of one end of the adjusting frame 201a is used for blocking and resetting the material blocking cover 202b-3b during adjustment.

[0047] The temporary storage 203 includes a mounting base 203a, a connecting screw hole 203b is opened through the middle of the mounting base 203a, a hopper 203c is installed on the top of the mounting base 203a, and a connecting screw tube 203d is also connected to the bottom of the hopper 203c. The connecting screw tube 203d matches the structure of the connecting screw hole 203b, and the connecting screw tube 203d and the connecting screw hole 203b are threadedly matched. By installing the connecting screw tube 203d at the bottom of the hopper 203c, because the connecting screw tube 203d matches the structure of the connecting screw hole 203b, and the connecting screw tube 203d and the connecting screw hole 203b are threadedly matched, the hopper 203c can be connected and fixed to the top of the mounting base 203a, and the mounting base 203a can also install and disassemble the hopper 203c according to usage.

[0048] Example 3, refer to Figure 4-5 In order to solve the problems of poor structural flexibility and insufficient stability of the dosing mechanism of the existing catalyst feeding tank in this embodiment, based on the same concept as the above-mentioned embodiment 1, the catalyst feeding tank for PVC preparation also includes:

[0049] The quantitative feeding assembly 202 includes an electric push rod 202a, and a support adjustment plate 202b is provided at one end of the electric push rod 202a. The support adjustment plate 202b matches the structure of the guide slide groove 201a-1, and the support adjustment plate 202b and the guide slide groove 201a-1 are slidably matched. By installing a support adjustment plate 202b at one end of the electric push rod 202a, because the support adjustment plate 202b matches the structure of the guide slide groove 201a-1, and the support adjustment plate 202b and the guide slide groove 201a-1 are slidably matched, the support adjustment plate 202b can be limitedly connected to the inside of the adjustment frame plate 201a.

[0050] A leakage hole 202b-1 is provided through the top of the support and adjustment plate 202b, and elastic rubber rings 202b-2 are provided around the outside of the support and adjustment plate 202b near the leakage hole 202b-1. A quantitative leakage barrel 202b-3 is also connected to the middle of the bottom of the support and adjustment plate 202b. The catalyst inside the hopper 203c can be dropped into the quantitative leakage barrel 202b-3 through the leakage hole 202b-1 provided through the top of the support and adjustment plate 202b.

[0051] A connecting frame 202b-3a is installed between the quantitative leakage barrel 202b-3 and the supporting adjustment plate 202b, and the connecting frame 202b-3a is fixedly connected to the output end of the electric push rod 202a. The bottom end of the quantitative leakage barrel 202b-3 is also movably hinged with a material blocking cover 202b-3b. The opening at the bottom of the quantitative leakage barrel 202b-3 can be sealed by the material blocking cover 202b-3b movably hinged at the bottom end of the quantitative leakage barrel 202b-3.

[0052] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A catalyst feeding tank for PVC preparation, comprising a proportioning tank (100) and a feeding mechanism (200), wherein the feeding mechanism (200) is installed on the top of the proportioning tank (100), Features: The feeding mechanism (200) comprises a supporting assembly (201) for quantitatively feeding the catalyst and a quantitative feeding assembly (202), wherein the quantitative feeding assembly (202) is arranged on the top of the supporting assembly (201), and a temporary storage (203) is connected to the top of the supporting assembly (201) near the quantitative feeding assembly (202); The proportioning tank (100) comprises a metal tank body (101), a discharge valve (102) is installed at the bottom of the metal tank body (101), and a water inlet pipe (103) is connected to the bottom side of the metal tank body (101) close to the discharge valve (102); The support assembly (201) comprises an adjustment frame plate (201a), two groups of support arm plates (201b) are connected to the bottom of one end of the adjustment frame plate (201a), a connecting frame plate (201c) is installed between the ends of the two groups of support arm plates (201b) away from the adjustment frame plate (201a), and an arc-shaped fixing plate (201d) is also provided at the end of the connecting frame plate (201c) away from the support arm plate (201b); The quantitative feeding assembly (202) comprises an electric push rod (202a), one end of which is provided with a support adjustment plate (202b), the support adjustment plate (202b) matches the structure of the guide slide groove (201a-1), and the support adjustment plate (202b) and the guide slide groove (201a-1) are in sliding fit; A material leakage hole (202b-1) is formed through the top of the support and adjustment plate (202b); elastic rubber rings (202b-2) are arranged around the outside of the support and adjustment plate (202b) near the material leakage hole (202b-1); and a quantitative material leakage cylinder (202b-3) is connected to the middle of the bottom of the support and adjustment plate (202b); A connecting frame (202b-3a) is installed between the quantitative leakage barrel (202b-3) and the support adjustment plate (202b), and the connecting frame (202b-3a) is fixedly connected to the output end of the electric push rod (202a). The bottom end of the quantitative leakage barrel (202b-3) is also movably hinged with a material blocking cover plate (202b-3b).

2. A catalyst feeding tank for PVC preparation according to claim 1, Features: A material feeding port (101a) is provided on the top of the metal tank body (101), and a plurality of groups of supporting columns (101b) are installed on the bottom of the metal tank body (101).

3. A catalyst feeding tank for PVC preparation according to claim 1, Features: The adjusting frame (201a) has guide sliding grooves (201a-1) respectively formed on both sides of its interior, a limit stop frame (201a-2) is installed at the bottom of one end of the adjusting frame (201a), and a guide groove (201a-3) is further formed at one end of the limit stop frame (201a-2).

4. A catalyst feeding tank for PVC preparation according to claim 1, Features: The temporary storage (203) comprises a mounting base (203a), a connecting screw hole (203b) is provided through the middle of the mounting base (203a), a hopper (203c) is mounted on the top of the mounting base (203a), a connecting screw tube (203d) is also connected to the bottom of the hopper (203c), the connecting screw tube (203d) matches the connecting screw hole (203b) in structure, and the connecting screw tube (203d) and the connecting screw hole (203b) are threadedly matched.

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