External pipeline for pipeline cleaning in caustic soda process

Abstract

The utility model relates to the technical field of conveying pipes in caustic soda process processing, in particular to an external pipeline for cleaning a pipeline in a caustic soda process, which comprises an inner conveying pipe and an outer conveying pipe, an anti-explosion structure for increasing the bearing pressure of the conveying inner pipe is assembled on the outer side of the conveying inner pipe; the two ends of the conveying inner pipe are each detachably provided with an angle-adjustable switching structure. The utility model has high sealing stability, and the conveying inner pipe is sealed and fixed by the assembly bolt after being subjected to angle adjustment by the flange I and the flange II, so that the sealing property of the connecting part is ensured. A transmission inner square rod of a closed structure is rotationally arranged on a transfer bottom pipe in a sealed mode, when a conveying inner pipe is opened, the transmission inner square rod is rotated, a transmission rod is driven to enable a closed top plate valve and a closed bottom plate valve to conduct spiral transmission at the same time through bidirectional threads, move along a vertical limiting groove of the conveying inner pipe and get away from each other, and materials are conveyed from a gap between the two valves; the design is beneficial to the sealing stability during alkali liquor conveying in the alkali process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of caustic soda process processing conveying pipe, concretely relates to a kind of external pipe for pipeline cleaning in caustic soda process. BACKGROUND

[0002] In caustic soda process, after the whole process system is overhauled, it needs to flush the pipeline with 32% alkali solution again, currently, 32% alkali solution is transported from other places, and the transportation needs to be transported to the designated position by manual operation, and the alkali solution is corrosive, and manual transportation has safety hazards, therefore, it is necessary to directly transport 32% alkali solution in other processes through the pipeline, but directly using ordinary pipeline to transport alkali solution will react with the air in the pipeline during transportation, which will increase the pressure in the pipeline, and if it is not handled in time, there will be a risk of leakage. Therefore, the technical personnel in the art provides a kind of external pipe for pipeline cleaning in caustic soda process to solve the problems raised in the above background technology. UTILITY MODEL CONTENTS

[0003] To solve the above technical problems, the utility model provides: a kind of external pipe for pipeline cleaning in caustic soda process, comprising:

[0004] The conveying inner tube is equipped with an explosion-proof structure outside the conveying inner tube to increase the pressure bearing capacity of the conveying inner tube.

[0005] The conveying inner tube is detachably installed with an angle-adjustable adapter structure at both ends.

[0006] The conveying inner tube is equipped with a sealing structure for closing and opening during caustic soda process conveying at both ends of the inner side of the conveying inner tube.

[0007] The sealing structure comprises a transmission rod, and a double-thread is vertically provided on the outer wall of the transmission rod, and the double-thread is provided with a sealing top plate valve and a sealing bottom plate valve through spiral transmission along the middle part.

[0008] Preferably, the explosion-proof structure comprises a protective outer tube sleeved on the outer part of the conveying inner tube, and a plurality of reinforcing plates are fixed at equal distances in the form of ring between the protective outer tube and the conveying inner tube, and a flange one for assembling the adapter structure is integrally fixed at both ends of the protective outer tube.

[0009] Preferably, the adapter structure comprises a sealing rotating shaft rotatably mounted with the conveying inner tube, and the sealing rotating shaft is rotatably assembled with an adapter bottom pipe.

[0010] Preferably, the outer wall of the adapter bottom pipe is integrally fixed with a flange two which is detachably sealed with the flange one.

[0011] Preferably, the adapter bottom pipe is connected with an adapter side pipe through a side opening, and an external flange is fixed to an end of the adapter side pipe away from the adapter bottom pipe.

[0012] Preferably, an internal transmission square rod is fixed to an end of the transmission rod, and a servo motor is connected to an outer side of the internal transmission square rod.

[0013] Preferably, vertical limiting rods are fixed to outer side walls of the closed top plate valve and the closed bottom plate valve, and vertical limiting grooves are formed in an inner wall of the conveying inner pipe corresponding to positions of the vertical limiting rods.

[0014] The present application has the following technical effects and advantages:

[0015] The present application has the following technical effects and advantages:

[0016] The present application has the following technical effects and advantages: BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structure diagram of an external pipe provided by the present application for pipe cleaning in a caustic soda process;

[0018] Figure 2 is a structure diagram of an external pipe provided by the present application for pipe cleaning in a caustic soda process, viewed from above;

[0019] Figure 3 is a structure diagram of an external pipe provided by the present application for pipe cleaning in a caustic soda process, viewed from above;

[0020] Figure 4is a structure diagram of a closed structure of an external pipeline for pipeline cleaning in a caustic soda process provided by the present application;

[0021] Figure 5 is a structure diagram of a switching structure of an external pipeline for pipeline cleaning in a caustic soda process provided by the present application.

[0022] Figure 6 is a structure diagram of a switching structure of an external pipeline for pipeline cleaning in a caustic soda process provided by the present application. Figure 3 is an enlarged diagram of A in the middle.

[0023] in the figure:

[0024] 1, conveying inner pipe;

[0025] 2, explosion-proof structure; 201, protective outer pipe; 202, reinforcing plate; 203, flange one;

[0026] 3, switching structure; 301, switching bottom pipe; 302, flange two; 303, sealing rotating shaft; 304, switching side pipe; 305, external flange;

[0027] 4, closed structure; 401, transmission rod; 402, bidirectional thread; 403, closed top plate valve; 404, closed bottom plate valve; 405, transmission inner square rod; 406, vertical limiting rod; 407, servo motor;

[0028] 5, assembly bolt;

[0029] 6, cleaning liquid inlet pipe; 7, supply pump; 8, cleaning liquid tank; 9, cleaning liquid discharge pipe; 10, valve. DETAILED DESCRIPTION

[0030] The utility model will be further explained in detail below in combination with the drawings and specific embodiments. The examples of the utility model are given for the purpose of illustration and description, and are not exhaustive or limit the utility model to the disclosed form. Many modifications and changes will be apparent to those of ordinary skill in the art. The selection and description of embodiments are to better illustrate the principles and practical application of the utility model, and to enable those of ordinary skill in the art to understand the utility model so as to design various embodiments with various modifications suitable for specific purposes.

[0031] Embodiment, please refer to Figures 1-6 In the embodiment, an external pipeline for pipeline cleaning in a caustic soda process is provided, comprising: a conveying inner pipe 1; an explosion-proof structure 2 is assembled outside the conveying inner pipe 1 to increase the pressure bearing of the conveying inner pipe 1; an angle-adjustable switching structure 3 is detachably installed at both ends of the conveying inner pipe 1; and a closed structure 4 for closing and opening during caustic soda process conveying is assembled at both ends of the inner side of the conveying inner pipe 1 in cooperation with the switching structure 3.

[0032] The closed structure 4 comprises a transmission rod 401, and the outer wall of the transmission rod 401 is vertically provided with a bidirectional screw thread 402, the bidirectional screw thread 402 is provided with a closed top plate valve 403 and a closed bottom plate valve 404 through screw transmission in the middle.

[0033] The adapter structure 3 comprises a sealed rotating shaft 303 which is sealingly and rotatably installed with the conveying inner pipe 1, and the sealed rotating shaft 303 is sealingly and rotatably installed with an adapter bottom pipe 301. The adapter structure 3 comprises a sealed rotating shaft 303 which is sealingly and rotatably installed with the conveying inner pipe 1, and the sealed rotating shaft 303 is sealingly and rotatably installed with an adapter bottom pipe 301. The flange one 203 and the flange two 302 are sealingly and fixedly installed through the assembly bolt 5. The sealed rotating shaft 303 is sealingly and rotatably installed with the adapter bottom pipe 301.

[0034] The outer side wall of the closed top plate valve 403 and the closed bottom plate valve 404 is integrally fixed with a vertical limiting rod 406, and the inner wall of the conveying inner pipe 1 is provided with a vertical limiting groove corresponding to the position of the vertical limiting rod 406. The closed top plate valve 403 and the closed bottom plate valve 404 can move along the bidirectional screw thread 402 at equal distances to adjust the space gap of the space in the conveying inner pipe 1.

[0035] One end of the conveying inner pipe 1 is connected with a cleaning liquid inlet pipe 6 which penetrates the outer side of the explosion-proof structure 2, and the other end of the cleaning liquid inlet pipe 6 is connected with a supply pump 7, the water suction end of the supply pump 7 is connected with a cleaning liquid tank 8, and the cleaning liquid tank 8 is used for storing the cleaning liquid for cleaning the alkali solution.

[0036] The other end of the conveying inner pipe 1 is connected with a cleaning liquid discharge pipe 9 which penetrates the outer side of the explosion-proof structure 2, and the bottom end of the cleaning liquid discharge pipe 9 is provided with a valve 10.

[0037] According to the above embodiment, the working principle of the present application is:

[0038] The conveying inner tube 1 is sealed and connected with the alkali liquor transfer tank in the alkali process through the adapter structure 3. The outer flange 305 of the adapter structure 3 is sealed and assembled with the alkali liquor transfer tank in the alkali process. After the angle adjustment of the flange one 203 and the flange two 302, the sealing and fixing are performed by using the assembly bolt 5.

[0039] The transmission inner square rod 405 of the closed structure 4 is arranged on the adapter bottom pipe 301 in a sealed and rotating manner.

[0040] When the conveying inner tube 1 connected with the alkali liquor transfer tank in the alkali process is opened, the external hexagonal wrench can be inserted into the inside of the transmission inner square rod 405, and the transmission inner square rod 405 can be rotated by rotating the external hexagonal wrench or starting the servo motor 407. The transmission rod 401 connected with the rotating transmission inner square rod 405 is rotated. The closed top plate valve 403 and the closed bottom plate valve 404 are simultaneously screw driven by the bidirectional screw thread 402, so that they are moved along the vertical limiting groove of the conveying inner tube 1 through the vertical limiting rod 406, and are far away from each other. The alkali process material can be conveyed along the gap between the closed top plate valve 403 and the closed bottom plate valve 404 in the conveying inner tube 1, which is beneficial to the stability of the sealing during the conveying of the alkali liquor.

[0041] The strength of the explosion-proof structure 2 is increased by the reinforced plate 202 assembled with the protective outer pipe 201.

[0042] The closed structure 4 can be used to close one end or the other end of the conveying inner tube 1, which is beneficial to conveying and cleaning the liquid in the alkali liquor intermediate tank or the conveying box. The cleaning liquid in the cleaning liquid tank 8 is conveyed into the inside of the conveying inner tube 1 through the cleaning liquid supply pump 7 and the cleaning liquid inlet pipe 6. When the closed structure 4 at one end of the conveying box in the conveying inner tube 1 is closed, the cleaning liquid can be conveyed into the inside of the alkali liquor intermediate tank to provide the cleaning liquid for soaking and cleaning the residual alkali liquor. When the cleaning liquid is provided for the conveying box in the alkali process, the closed structure 4 at the other end of the conveying inner tube 1 is closed to provide the cleaning liquid for the conveying box in the alkali process. When the residual alkali liquor in the conveying inner tube 1 is cleaned, the two groups of closed structures 4 are closed at the same time to soak the cleaning liquid in the conveying inner tube 1. The cleaning liquid discharge pipe 9 is opened through the valve 10 to discharge the cleaning liquid in the conveying inner tube 1.

[0043] In the utility model, unless another definite provision and limitation, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation, for ordinary skill in the art to the person, can according to specific circumstances understanding the specific meaning of the above-mentioned terms in the utility model.

[0044] Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art and related fields without creative work shall belong to the scope of protection of the utility model. The structure, device and operation method not specifically described and explained in the utility model, if no special description and limitation, are implemented according to the conventional means in the art.

Claims

1. An external pipe for pipe cleaning in a caustic soda process, characterized in that Include: The conveying inner tube (1) is equipped with an explosion-proof structure (2) outside the conveying inner tube (1) to increase the pressure bearing of the conveying inner tube (1); Both ends of the conveying inner tube (1) are detachably mounted with an angle-adjustable adapter structure (3); And both ends of the conveying inner tube (1) are equipped with a sealing structure (4) for closing and opening during alkali process conveying in cooperation with the adapter structure (3); The sealing structure (4) includes a transmission rod (401), and the outer wall of the transmission rod (401) is vertically provided with a bidirectional screw (402), and the bidirectional screw (402) is provided with a sealing top plate valve (403) and a sealing bottom plate valve (404) along the middle screw transmission.

2. A pipe for external cleaning of pipes in a caustic soda process according to claim 1, characterized in that The explosion-proof structure (2) includes a protective outer tube (201) sleeved outside the conveying inner tube (1), and a plurality of reinforcing plates (202) are fixed between the protective outer tube (201) and the conveying inner tube (1) in a ring shape at equal distances, and the flange one (203) for assembling the adapter structure (3) is integrally fixed at both ends of the protective outer tube (201).

3. A kind of external pipe for pipe cleaning in caustic soda process according to claim 1, characterized by, The adapter structure (3) includes a sealing rotating shaft (303) sealingly rotatably mounted with the conveying inner tube (1), and the sealing rotating shaft (303) sealingly rotatably mounts an adapter bottom pipe (301).

4. The external pipe for pipe cleaning in a caustic process according to claim 3, characterized by, The outer wall of the adapter bottom pipe (301) integrally fixes a flange two (302) detachably sealingly assembled with the flange one (203).

5. The external pipe for pipe cleaning in a caustic process according to claim 4, characterized in that, The adapter side pipe (304) is connected through the side of the adapter bottom pipe (301), and the outer flange (305) is integrally fixed at one end of the adapter side pipe (304) away from the adapter bottom pipe (301).

6. The external pipe for pipe cleaning in a caustic process according to claim 1, characterized by, One end of the transmission rod (401) integrally fixes a transmission inner square rod (405) sealingly rotatably mounted in the inside of the adapter bottom pipe (301), and the transmission inner square rod (405) is connected with a servo motor (407) outside.

7. A pipe cleaning external pipe for use in a caustic soda process according to claim 6, characterized in that The outer side walls of the sealing top plate valve (403) and the sealing bottom plate valve (404) are integrally fixed with vertical limiting rods (406), and the inner wall of the conveying inner tube (1) is provided with vertical limiting grooves corresponding to the positions of the vertical limiting rods (406).

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