Multistage pump for refining trimer acid

Abstract

The utility model discloses a multi-stage pump for refining trimer acid, which relates to the technical field of equipment for producing trimer acid and comprises a pump body and an inlet pipe on the pump body, and a first flange and a filter component are mounted on the inlet pipe; the filter assembly comprises a first ring groove formed in the pipe end of the inlet pipe, a first backing ring attached to the interior of the first ring groove, a first filter cylinder arranged in the inlet pipe, a second ring groove formed in the ring end of the first backing ring, a second backing ring attached to the interior of the second ring groove and a second filter cylinder arranged on the inner side of the first filter cylinder; the trimer acid filter has the advantages that the second filter cartridge is arranged in the first filter cartridge, the aperture of the filter holes in the first filter cartridge is larger than that of the filter holes in the second filter cartridge, and trimer acid solution flows into the second filter cartridge through the external pipe to be filtered for the first time and then is filtered again through the first filter cartridge, so that impurities can be separated to reduce accumulation; the filtrate passing efficiency is improved; the supporting assembly is arranged, so that the stability of the filter assembly after being arranged can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment for the production of trimeric acid, and more specifically to a multi-stage pump for the refining of trimeric acid. Background Technology

[0002] Multistage pumps are used in the refining process of trimeric acid mainly to increase the pressure of the conveyed liquid in order to overcome the high resistance encountered in the refining process or to achieve long-distance transportation. Trimeric acid is a complex mixture, usually obtained by chemical reaction of various fatty acids (such as palmitic acid, stearic acid, etc.). It is commonly used in the production of oleochemical products, coatings, resins and other fields. The refining process aims to remove impurities and improve product quality.

[0003] When using a multistage pump to pump liquid during the refining process of trimeric acid, measures need to be taken to filter out impurities in the liquid to protect the multistage pump from damage. Since trimeric acid may contain solid particles, unreacted raw materials, decomposition products and other impurities during the refining process, if these impurities directly enter the pump, they may cause wear, blockage and other issues, resulting in reduced pump efficiency. In response, a "filtration mechanism" as shown in the multistage pump {such as the self-balancing multistage pump} has been proposed.

[0004] The aforementioned "filtration mechanism" only uses a "filter cartridge" for filtration. This method filters impurities of different sizes in the same space, resulting in large accumulation and low filtrate throughput. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-stage pump for the refining of trimeric acid in order to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] This utility model proposes a multi-stage pump for the refining of trimeric acid, including a pump body and an inlet pipe thereon, on which a first flange and a filter assembly are installed;

[0008] The filter assembly includes a first annular groove at the end of the inlet pipe, a first gasket fitted inside the first annular groove, a first filter cartridge inside the inlet pipe, a second annular groove at the end of the first gasket, a second gasket fitted inside the second annular groove, and a second filter cartridge inside the first filter cartridge.

[0009] The opening end of the first filter cylinder is fixed to the ring end of the first gasket, and the opening end of the second filter cylinder is fixed to the ring end of the second gasket. There is a gap between the first filter cylinder and the second filter cylinder. The first filter cylinder and the second filter cylinder are respectively provided with multiple sets of filter holes, and each of them is connected to the inner and outer sides of the first filter cylinder and the second filter cylinder. The diameter of the filter hole on the first filter cylinder is larger than the diameter of the filter hole on the second filter cylinder.

[0010] As a preferred embodiment of this utility model, the first annular groove extends from the inlet pipe end to the first flange.

[0011] As a preferred technical solution of this utility model, it also includes an outer pipe disposed outside the inlet pipe and a second flange fixed outside the outer pipe, wherein the end face of the outer pipe and the end face of the second flange are on the same horizontal plane and are in contact with the first flange, the first gasket and the second gasket.

[0012] As a preferred technical solution of this utility model, it also includes several sets of support components disposed between the inlet pipe and the outside of the first filter cartridge.

[0013] As a preferred embodiment of the present invention, the support assembly is provided in multiple sets and is evenly distributed in a ring outside the first filter cylinder.

[0014] As a preferred technical solution of this utility model, the support component includes a contact block fixed outside the first filter cartridge and a pad block fixed inside the inlet pipe. A first flexible pressing ring that fits into the first pad ring is fixed in the first annular groove. The contact block and the pad block are fitted together by a second flexible pressing ring.

[0015] As a preferred technical solution of this utility model, the contact surface between the contact block and the pad block is inclined from bottom to top, gradually moving away from the center of the inlet tube.

[0016] The beneficial effects of this utility model are as follows:

[0017] By setting a second filter cartridge 46 inside the first filter cartridge 43, the aperture of the filter holes on the first filter cartridge 43 is larger than the aperture of the filter holes on the second filter cartridge 46. The trimeric acid solution is flowed through the external pipe 5 into the second filter cartridge 46 for initial filtration, and then filtered again by the first filter cartridge 43. This can separate impurities, reduce accumulation, and improve the filtrate throughput.

[0018] Furthermore, several sets of support components 7 are provided between the inlet pipe 2 and the outside of the first filter cartridge 43 to improve the stability of the filter component 4 after it is installed. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Reference numerals in the attached drawings: Pump body-1, Inlet pipe-2, First flange-3, Filter assembly-4, Outer pipe-5, Second flange-6, Support assembly-7, First annular groove-41, First gasket-42, First filter cartridge-43, Second annular groove-44, Second gasket-45, Second filter cartridge-46, Contact block-71, Gasket block-72. Detailed Implementation Example 1:

[0021] like Figure 1 As shown, this embodiment proposes a multi-stage pump for refining trimeric acid, including a pump body 1 and an inlet pipe 2 thereon, a first flange 3 and a filter assembly 4 are installed on the inlet pipe 2, the inlet pipe 2 is provided at the top of the pump body 1, the first flange 3 is fixed at the top of the outer periphery of the inlet pipe 2, and a solution for filtering trimeric acid is provided on the inlet pipe 2.

[0022] The filter assembly 4 includes a first annular groove 41 located at the end of the inlet pipe 2 (as shown in the figure, the first annular groove 41 is provided at the pipe opening at the top of the inlet pipe 2).

[0023] A first washer ring 42 is fitted inside the first annular groove 41 (as shown in the figure, the first washer ring 42 is inserted into the first annular groove 41 for support).

[0024] The first filter cylinder 43 is installed inside the inlet pipe 2. The cylinder opening end of the first filter cylinder 43 is fixed to the ring end of the first gasket 42. The first filter cylinder 43 is connected through the bottom end of the first gasket 42 to stabilize the position of the first filter cylinder 43 in the inlet pipe 2.

[0025] A second annular groove 44 is provided on the ring end of the first washer ring 42 (as shown in the figure, the second annular groove 44 is provided at the ring opening at the top of the first washer ring 42).

[0026] The second washer 45 is attached to the second annular groove 44 and is placed in the second annular groove 44 for support.

[0027] The second filter cylinder 46 is disposed inside the first filter cylinder 43. The cylinder opening end of the second filter cylinder 46 is fixed to the ring end of the second gasket 45. The second filter cylinder 46 is connected to the bottom end of the second gasket 45 to stabilize the position of the second filter cylinder 46 in the first filter cylinder 43.

[0028] There is a gap between the first filter cartridge 43 and the second filter cartridge 46 (as shown in the figure, there is a gap when the second filter cartridge 46 is inserted into the first filter cartridge 43, so as to provide a double filtration space in the first filter cartridge 43 and the second filter cartridge 46).

[0029] The first filter cartridge 43 and the second filter cartridge 46 are respectively provided with multiple sets of filter holes, and each of them is connected to the inner and outer sides of the first filter cartridge 43 and the second filter cartridge 46. The pore diameter of the filter hole on the first filter cartridge 43 is larger than that of the filter hole on the second filter cartridge 46 (after the trimeric acid solution is passed through the outer pipe 5 to the second filter cartridge 46 for initial filtration, it is then filtered again by the first filter cartridge 43, which can separate impurities to reduce accumulation and improve the filtrate throughput).

[0030] Wherein, the first annular groove 41 extends from the end of the inlet pipe 2 to the first flange 3 (as shown in the figure, after the first annular groove 41 is recessed at the top of the inlet pipe 2, it expands outward and extends into the first flange 3 to increase the groove surface, which can correspondingly increase the support strength of the first gasket ring 42).

[0031] It also includes an outer pipe 5 located outside the inlet pipe 2 and a second flange 6 fixed outside the outer pipe 5 (the second flange 6 is set above the first flange 3, and the outer pipe 5 is set above the inlet pipe 2. During assembly, the outer pipe 5 is moved down to contact the inlet pipe 2, and the first flange 3 and the second flange 6 are connected by bolts, etc., and a fluororubber gasket is added between the first flange 3 and the second flange 6 to improve the sealing).

[0032] The end face of the outer pipe 5 and the end face of the second flange 6 are on the same horizontal plane and are in contact with the first flange 3, the first gasket 42 and the second gasket 45 (as shown in the figure, the first gasket 42 and the second gasket 45 are both pressed and pressed by the outer pipe 5 and the second flange 6 to stabilize the position of the filter assembly 4 after it is installed and to ensure stable use). Example 2:

[0033] like Figure 1 As shown, its difference from Embodiment 1 is that it also includes several sets of support components 7 disposed between the inlet pipe 2 and the outside of the first filter cartridge 43.

[0034] The support components 7 are provided in multiple sets and are evenly distributed in a ring outside the first filter cylinder 43 (as shown in the figure, the support components 7 are symmetrically arranged on the left and right sides of the first filter cylinder 43 to provide symmetrical support force to improve stability).

[0035] To enable the implementation and use of the aforementioned support component 7, it is proposed that, for example... Figure 1 As shown, the specific structure and composition of the support component 7 can be as follows: the support component 7 includes a contact block 71 fixed outside the first filter cartridge 43 and a pad block 72 fixed inside the inlet pipe 2.

[0036] A first flexible clamping ring (the material of the first flexible clamping ring can be fluororubber, etc., and fluororubber has high durability) is fixedly fitted inside the first annular groove 41 and fits against the first gasket ring 42, providing flexible clamping force for the first gasket ring 42 when it is installed in the first annular groove 41.

[0037] The contact block 71 and the pad block 72 are bonded together by a second flexible clamping ring, which provides a flexible clamping force between the contact block 71 and the pad block 72 to improve the stability of the installation position of the first filter cartridge 43; and the flexible support can provide a buffering effect when subjected to flow.

[0038] The contact surfaces between the contact block 71 and the pad block 72 are inclined from bottom to top, gradually moving away from the center of the inlet tube 2 (e.g., Figure 1As shown in the enlarged view, the contact surface between the contact block 71 and the pad block 72 slopes upwards from left to right. This allows for better interaction between the contact block 71 and the pad block 72 when the contact block 71 moves downwards, thus enhancing the clamping effect.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model 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 basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multistage pump for refining trimeric acid, comprising a pump body (1) and an inlet pipe (2) thereon, wherein a first flange (3) and a filter assembly (4) are installed on the inlet pipe (2). Its features are, The filter assembly (4) includes a first annular groove (41) at the end of the inlet pipe (2), a first gasket (42) attached to the first annular groove (41), a first filter cartridge (43) in the inlet pipe (2), a second annular groove (44) on the end of the first gasket (42), a second gasket (45) attached to the second annular groove (44), and a second filter cartridge (46) on the inner side of the first filter cartridge (43). The opening end of the first filter cylinder (43) is fixed to the ring end of the first gasket (42), and the opening end of the second filter cylinder (46) is fixed to the ring end of the second gasket (45). There is a gap between the first filter cylinder (43) and the second filter cylinder (46). The first filter cylinder (43) and the second filter cylinder (46) are respectively provided with multiple sets of filter holes, and each of them is connected to the inner and outer sides of the first filter cylinder (43) and the second filter cylinder (46). The diameter of the filter hole on the first filter cylinder (43) is larger than the diameter of the filter hole on the second filter cylinder (46).

2. The multi-stage pump for refining trimeric acid according to claim 1, characterized in that, The first annular groove (41) extends from the inlet pipe (2) to the first flange (3).

3. The multi-stage pump for refining trimeric acid according to claim 1, characterized in that, It also includes an outer pipe (5) located outside the inlet pipe (2) and a second flange (6) fixed outside the outer pipe (5). The end face of the outer pipe (5) and the end face of the second flange (6) are on the same horizontal plane and are in contact with the first flange (3), the first gasket (42) and the second gasket (45).

4. The multi-stage pump for refining trimeric acid according to claim 1, characterized in that, It also includes several sets of support components (7) located between the inlet pipe (2) and the outside of the first filter cartridge (43).

5. A multi-stage pump for refining trimeric acid according to claim 4, characterized in that, The support assembly (7) is provided in multiple sets and is evenly distributed in a ring outside the first filter cartridge (43).

6. A multi-stage pump for refining trimeric acid according to claim 5, characterized in that, The support assembly (7) includes a contact block (71) fixed outside the first filter cartridge (43) and a pad block (72) fixed inside the inlet pipe (2). A first flexible clamping ring that fits into the first pad ring (42) is fixed in the first annular groove (41). The contact block (71) and the pad block (72) are fitted together by a second flexible clamping ring.

7. A multi-stage pump for refining trimeric acid according to claim 6, characterized in that, The contact surface between the contact block (71) and the pad block (72) is inclined from bottom to top, gradually moving away from the center of the inlet tube (2).

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