Sodium hypochlorite delivery pump for chemical production

Abstract

The utility model relates to the technical field of chemical production equipment, and discloses a sodium hypochlorite delivery pump for chemical production, which comprises a centrifugal pump main body, the output end and the output end of the centrifugal pump main body are respectively provided with a connecting assembly, and one end of each connecting assembly far away from a water pipe flange plate is provided with a water pipe flange plate. And pin rods penetrate through the surface of the water pipe flange plate at equal intervals, positioning grooves are formed in the surfaces of the pin rods, and the ends, away from the water pipe flange plate, of the pin rods extend into the connecting assembly. Installation of the centrifugal pump body and the pipeline changes a traditional flange plate bolt diagonal installation mode, the pin rod is matched with the connecting assembly, connection can be completed by inserting the pin rod and rotating the threaded ring in the installation process, the threaded ring is reversely rotated in the disassembly process, time and labor are greatly saved, and the equipment maintenance and overhaul efficiency is improved; and the connection reliability is improved, stable operation of the pump is guaranteed, and therefore the stability of chemical production and the product quality can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical production equipment more particularly to a sodium hypochlorite conveying pump for chemical production. BACKGROUND

[0002] The sodium hypochlorite conveying pump plays a crucial role in chemical production, enabling the precise delivery of sodium hypochlorite solution to designated reaction vessels or process flows as required by the production process. By controlling the flow and pressure of the conveying pump, it ensures that sodium hypochlorite participates in chemical reactions with accurate quantities, contributing to the stability and consistency of product quality. Its working principle mainly relies on the centrifugal force generated by the high-speed rotation of the impeller to impart energy to the liquid, thereby achieving its delivery. When the impeller rotates, sodium hypochlorite is flung from the center of the impeller to the outer edge under the action of centrifugal force, while a low-pressure area is formed at the center of the impeller, causing sodium hypochlorite to be continuously drawn into the pump.

[0003] When the input and output ends of the traditional sodium hypochlorite conveying centrifugal pump and the pipeline are connected through flanges, the bolts are usually installed in a diagonal manner. This is mainly to ensure that the flanges are uniformly pressed to avoid damage to the sealing ring due to uneven stress, thereby ensuring the sealing of the connection. However, this installation method also has some drawbacks. Diagonal installation of bolts requires tightening or loosening each bolt in a diagonal sequence, which is relatively cumbersome. Especially when installing or disassembling multiple flange connections, it takes a lot of time and effort, affecting the efficiency of equipment maintenance and repair. Although the intention of diagonal bolt installation is to uniformly press the flanges, in actual operation, due to factors such as the machining accuracy of the flanges and the installation stress of the pipeline, it is difficult to ensure that each bolt is subjected to exactly the same force. After long-term operation, some bolts may become loose or experience excessive stress, affecting the reliability of the connection. SUMMARY

[0004] To overcome the above-mentioned defects of the prior art, the utility model provides a sodium hypochlorite conveying pump for chemical production to solve the problems existing in the background art.

[0005] The utility model provides the following technical scheme: a sodium hypochlorite conveying pump for chemical production, comprising a centrifugal pump main body, a connecting assembly is installed on the output end and the output end of the centrifugal pump main body, a water pipe flange is installed on the end of the connecting assembly away from the water pipe flange, a pin is equidistantly and penetratively arranged on the surface of the water pipe flange, a positioning groove is arranged on the surface of the pin, the end of the pin away from the water pipe flange extends into the inside of the connecting assembly, and the end of the connecting assembly away from the water pipe flange is fixedly welded on the surface of the centrifugal pump main body.

[0006] Further, the connecting assembly comprises a fixing seat fixedly welded on the surface of the centrifugal pump body, a sealing gasket is fixedly connected to the surface of the water pipe flange plate close to the fixing seat, a threaded ring is threadedly rotatably connected to the outer surface of the fixing seat, a plurality of insertion holes are equidistantly formed in the outer surface of the threaded ring, a plurality of sliding grooves are equidistantly formed in the inner portion of the fixing seat, two limiting rods are fixedly connected to the inner portion of the sliding grooves, a plurality of limiting grooves are equidistantly formed in the outer surface of the fixing seat and communicate with the inner portion of the sliding grooves, a groove is formed in the inner wall of the threaded ring, and a positioning assembly is longitudinally movably mounted in the inner portion of the sliding groove and extends into the groove away from the limiting rod.

[0007] Further, the positioning assembly comprises a sliding seat longitudinally slidably connected to the outer surface of the limiting rod, a long groove is formed in the inner portion of the sliding seat, a sliding plate is slidably connected to the inner portion of the long groove, a positioning block is fixedly connected to the surface of the sliding plate, a plurality of springs are equidistantly fixedly mounted in the inner portion of the long groove, an inclined groove is formed in the upper surface of the positioning block, a positioning column is fixedly connected to the inner portion of the sliding groove at the top end, a limiting column is fixedly connected to the surface of the sliding seat away from the positioning block, a plurality of steel balls are movably mounted in the inner portion of the limiting column, and the surfaces of the steel balls extend to the outer portion of the limiting column.

[0008] Further, the limiting column is inserted into the groove in the outer surface, the groove is annular, and the surfaces of the steel balls are rollingly connected to the inner wall of the groove.

[0009] Further, the end of the positioning column is arc-shaped, the inclined groove is trapezoidal, and the surface of the positioning column abuts against the inner wall of the inclined groove.

[0010] Further, the positioning block slides in the direction close to the limiting rod under the elasticity of the spring in the normal state, and the top side end of the positioning block is arc-shaped.

[0011] Further, the limiting column is longitudinally slidably connected to the inner portion of the limiting groove, and the end of the limiting column away from the sliding seat extends to the outer portion of the fixing seat.

[0012] Further, the inner portion of the fixing seat is provided with a liquid passing groove matched with the water pipe flange plate at the center, the outer surface of the fixing seat is provided with threads matched with the inner wall of the threaded ring, and the top diameter of the limiting rod is greater than the end diameter.

[0013] The technical effects and advantages of the present application are as follows:

[0014] 1. The present application, by the cooperation of the limiting rod and the connecting assembly, and the collaborative operation of the threaded ring and the positioning assembly, only needs to insert the limiting rod of the water pipe flange plate into the sliding groove of the connecting assembly and rotate the threaded ring to quickly complete the connection during installation, and reversely rotates the threaded ring to disassemble, greatly saving the time and labor cost of installation and disassembly, and improving the efficiency of equipment maintenance and overhaul.

[0015] 2. The utility model discloses, on the reliability of connection, the sealing gasket in connecting assembly can effectively prevent sodium hypochlorite leakage, ensure the safety of the conveying process, the spring and the locating block in the positioning assembly cooperate the positioning groove, can always keep the stability of the pin stick when the equipment runs, avoid the connection loose because of vibration and other factors, simultaneously, the threaded ring is connected with the fixed seat in the threaded mode, compared with the traditional bolt connection, can better disperse the stress, reduce the damage caused to the connecting part because of uneven stress, thereby improve the reliability of connection, guarantee the long-term stable operation of sodium hypochlorite conveying pump, help to improve the overall stability of chemical production and product quality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic drawing of the utility model;

[0017] Figure 2 It is the connecting schematic drawing of connecting assembly and water pipe flange plate of the utility model;

[0018] Figure 3 It is Figure 2 longitudinal section view;

[0019] Figure 4 It is the structure schematic drawing of threaded ring in the utility model;

[0020] Figure 5 It is Figure 3 enlarged view of A in

[0021] Figure 6 It is the structure schematic drawing of positioning assembly in the utility model;

[0022] Figure 7 It is the section view of sliding seat in the utility model.

[0023] The figure mark is: 1, centrifugal pump main body;2, connecting assembly;21, fixed seat;22, sealing gasket;23, threaded ring;231, recess;24, insertion hole;25, sliding groove;26, limit rod;27, limit slot;28, positioning assembly;281, sliding seat;2811, long slot;282, limit column;283, steel ball;284, locating block;2841, sliding plate;2842, spring;285, inclined slot;286, positioning column;3, water pipe flange plate;4, pin stick;41, positioning groove. DETAILED DESCRIPTION

[0024] The utility model makes further explanation in combination with specific embodiment, however, people skilled in the art should understand that the detailed explanation given in combination with the drawings here is to explain better, the structure of the utility model must exceed these limited embodiments, and for some equivalent replacement scheme or common means, this paper will not make detailed description, but still belongs to the protection scope of the application.

[0025] Figures 1-7 It is the best embodiment of the utility model, the following will be combined with the Figures 1-7 The utility model makes further explanation.

[0026] A sodium hypochlorite conveying pump for chemical production, including centrifugal pump main body 1, the output end and the output end of centrifugal pump main body 1 are installed with connecting assembly 2, the end away from water pipe flange 3 of connecting assembly 2 is installed with water pipe flange 3, the surface of water pipe flange 3 is equidistantly penetrated and is provided with pin 4, the surface of pin 4 is provided with positioning groove 41, the end away from water pipe flange 3 of pin 4 extends to the inside of connecting assembly 2, the end away from water pipe flange 3 of connecting assembly 2 is fixedly welded on the surface of centrifugal pump main body 1.

[0027] In the embodiment, by pin 4 and connecting assembly 2 cooperation, compared with the traditional flange bolt diagonal installation mode, only need to insert pin 4 into connecting assembly 2 when installing, operation is more convenient, can save the time and manpower of installation and disassembly greatly, improves equipment maintenance and overhauling efficiency.

[0028] Specifically, connecting assembly 2 includes fixed seat 21 fixedly welded on the surface of centrifugal pump main body 1, the surface of fixed seat 21 close to water pipe flange 3 is fixedly connected with sealing pad 22, the outer surface of fixed seat 21 is screw threadedly connected with threaded ring 23, the outer surface of threaded ring 23 is equidistantly provided with insertion hole 24, the inside of fixed seat 21 is equidistantly provided with sliding slot 25, the inside of sliding slot 25 is fixedly connected with two limit rods 26, the outer surface of fixed seat 21 is equidistantly provided with limit slot 27 in communication with the inside of sliding slot 25, the inner wall of threaded ring 23 is provided with recess 231, the inside of sliding slot 25 is longitudinally movably installed with positioning assembly 28, the end away from pin 4 of positioning assembly 28 extends to the inside of recess 231.

[0029] In the embodiment, the sealing gasket 22 can effectively prevent sodium hypochlorite leakage, ensure the safety and sealing of the conveying process, avoid the harm of sodium hypochlorite leakage to the environment and production, the single threaded ring 23 is threadedly connected with the fixed seat 21, can drive all the pins 4 to move, compared with the traditional independent connection of multiple bolts, can better disperse the stress, reduce the damage caused by uneven stress at the connection part, and improve the reliability of the connection, the jack 24 facilitates the rotation of the threaded ring 23 with the aid of external tools, makes the operation more labor-saving, the sliding groove 25 and the limiting rod 26 provide a stable sliding track for the positioning assembly 28, ensure that the positioning assembly 28 can work normally, the limiting groove 27 cooperates with the limiting column 282 to limit the movement range of the positioning assembly 28, so that it slides in the specified path, enhances the stability of the connection, the groove 231 cooperates with the positioning assembly 28, when the threaded ring 23 is rotated, can drive the positioning assembly 28 to move, realize the positioning and fixing of the pin 4.

[0030] Specifically, the positioning assembly 28 includes a sliding seat 281 longitudinally and slidingly connected to the outer surface of the limiting rod 26, a long groove 2811 is formed in the inside of the sliding seat 281, a sliding plate 2841 is slidingly connected to the inside of the long groove 2811, a positioning block 284 is fixedly connected to the surface of the sliding plate 2841, springs 2842 are equidistantly and fixedly installed in the inside of the long groove 2811, an inclined groove 285 is formed in the upper surface of the positioning block 284, a positioning column 286 is fixedly connected to the inside top end of the sliding groove 25, a limiting column 282 is fixedly connected to the surface of the sliding seat 281 away from the positioning block 284, steel balls 283 are equidistantly and movably installed in the inside of the limiting column 282, and the surfaces of the steel balls 283 extend to the outside of the limiting column 282.

[0031] In the embodiment, the sliding seat 281 slides on the limiting rod 26, ensures the stability of the overall movement of the positioning assembly 28, the long groove 2811 and the sliding plate 2841 cooperate to enable the positioning block 284 to flexibly slide in the long groove 2811, provide guidance for the movement of the positioning block 284, the springs 2842 provide elastic force, and in the normal state, make the positioning block 284 slide towards the pin 4, can always keep the pin 4 stable during equipment operation, avoid loose connection caused by vibration and other factors, the inclined groove 285 cooperates with the positioning column 286, when the threaded ring 23 is rotated, through the interaction of the positioning column 286 and the inclined groove 285, realizes the extension and contraction movement of the positioning block 284, thereby completing the positioning and loosening operation of the pin 4, the limiting column 282 not only plays a role in connecting the sliding seat 281 and the threaded ring 23, but also connects the sliding seat 281 and the threaded ring 23 through the rolling connection of the steel balls 283 and the groove 231, reduces the friction force, and enables the positioning assembly 28 to move more smoothly when the threaded ring 23 rotates.

[0032] Specifically, the limiting column 282 is inserted into the inside of the groove 231, the groove 231 is annular, and the surfaces of the steel balls 283 are rollingly connected to the inner wall of the groove 231.

[0033] In this embodiment, the structure makes the limiting column 282 slide stably in the groove 231 when the threaded ring 23 rotates, drives the positioning assembly 28 to move, and the steel ball 283 is connected to the inner wall of the groove 231 to effectively reduce the friction, so that the threaded ring 23 rotates more easily.

[0034] Specifically, the end of the positioning column 286 is arc-shaped, and the inclined groove 285 is trapezoidal, and the surface of the positioning column 286 abuts against the inner wall of the inclined groove 285.

[0035] In this embodiment, the arc-shaped design of the end of the positioning column 286 and the trapezoidal structure of the inclined groove 285 make the contact and movement between the positioning column 286 and the inclined groove 285 more smooth, and when the threaded ring 23 rotates, the positioning column 286 can slide smoothly in the inclined groove 285 to push the positioning block 284 to stretch and retract, accurately realizing the positioning and loosening action of the pin rod 4.

[0036] Specifically, the positioning block 284 slides to the direction close to the pin rod 4 by the elasticity of the spring 2842 in the normal state, and the top side end of the positioning block 284 is arc-shaped.

[0037] In this embodiment, the elastic force of the spring 2842 ensures that the positioning block 284 always has a tendency to be close to the pin rod 4, can be tightly clamped in the positioning groove 41, enhances the stability of the connection of the pin rod 4, prevents the pin rod 4 from loosening during the operation of the equipment, and the arc-shaped design of the top side end of the positioning block 284 facilitates the insertion of the positioning block 284 into the positioning groove 41, reduces the resistance during insertion, and makes the installation process more convenient.

[0038] Specifically, the limiting column 282 is longitudinally and slidingly connected in the inside of the limiting groove 27, and the end of the limiting column 282 away from the sliding seat 281 extends to the outside of the fixed seat 21.

[0039] In this embodiment, the limiting column 282 slides in the limiting groove 27, limits the movement direction of the positioning assembly 28, so that it can only move longitudinally along the direction of the limiting groove 27, ensures the accuracy and stability of the work of the positioning assembly 28, and the limiting column 282 extends to the outside of the fixed seat 21, which is convenient for connection with the threaded ring 23 and movement of the positioning assembly 28 driven by the threaded ring 23.

[0040] Specifically, the inside center of the fixed seat 21 is provided with a liquid passing groove matched with the water pipe flange plate 3, the outer surface of the fixed seat 21 is provided with threads matched with the inner wall of the threaded ring 23, and the top diameter of the pin rod 4 is greater than the end diameter.

[0041] In the embodiment, the liquid passage ensures that the sodium hypochlorite can smoothly pass through the connecting assembly 2 from the centrifugal pump body 1 to the external pipeline, guarantees the smoothness of the conveying process, the matching threads on the outer surface of the fixing seat 21 and the inner wall of the threaded ring 23 enable the threaded ring 23 to be stably connected with the fixing seat 21, and when the threaded ring 23 is rotated, uniform pressure can be generated, the stress can be better dispersed, and the reliability of the connection is improved; the design that the diameter of the top of the pin rod 4 is larger than the diameter of the end facilitates the insertion of the pin rod 4 into the sliding slot 25, and after the insertion, the top with the larger diameter can limit the insertion of the pin rod 4, thereby guaranteeing the accuracy and stability of the connection.

[0042] The working principle and use process of the utility model are as follows: when assembling, the water pipe and the water pipe flange plate 3 are fixed, then the water pipe flange plate 3 is placed on the surface of the sealing gasket 22, then the pin rod 4 is inserted into the sliding slot 25, then the threaded ring 23 is counterclockwise rotated, the sliding seat 281 and the positioning block 284 are driven to slide downward by the limiting column 282, at this time, the end of the limiting column 286 slowly separates from the inner wall of the inclined slot 285, and the sliding plate 2841 drives the positioning block 284 to slide toward the pin rod 4 due to the elasticity of the spring 2842, until the positioning block 284 is clamped in the positioning slot 41, then the threaded ring 23 is continuously counterclockwise rotated, the positioning assembly 28 slides downward as a whole, and the pin rod 4 slides downward due to the abutting of the positioning block 284 and the inner wall of the positioning slot 41, when the pin rod 4 slides downward, the water pipe flange plate 3 slides downward, until the water pipe flange plate 3 is tightly sealed on the surface of the fixing seat 21 by the sealing gasket 22, at this time, the water pipe flange plate 3 and the connecting assembly 2 are sealed and assembled, when the threaded ring 23 is difficult to rotate, an external rod is inserted into the insertion hole 24, and the threaded ring 23 can be easily rotated by rotating the rod;

[0043] When the water pipe flange plate 3 is disassembled, the threaded ring 23 is clockwise rotated, the positioning assembly 28 slides upward as a whole, and the positioning block 284 slides into the sliding seat 281 due to the abutting of the limiting column 286 and the inner wall of the inclined slot 285, until the positioning block 284 separates from the positioning slot 41, then the pin rod 4 can be directly pulled out and removed, and the water pipe flange plate 3 can be directly removed, at this time, the disassembly is completed.

[0044] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms, any skilled person in the art can change or modify the above disclosed technical content into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the utility model still belongs to the protection scope of the technical scheme of the utility model.

Claims

1. A sodium hypochlorite delivery pump for chemical production, comprising a centrifugal pump body (1), characterized in that: The output end and the output end of the centrifugal pump body (1) are provided with a connecting assembly (2), one end of the connecting assembly (2) away from the water pipe flange (3) is provided with a water pipe flange (3), a plurality of pin rods (4) are equidistantly arranged on the surface of the water pipe flange (3), a plurality of positioning grooves (41) are arranged on the surface of the pin rod (4), and one end of the pin rod (4) away from the water pipe flange (3) extends into the connecting assembly (2); and the other end of the connecting assembly (2) away from the water pipe flange (3) is fixedly welded on the surface of the centrifugal pump body (1). The connecting assembly (2) comprises a fixed seat (21) fixedly welded on the surface of the centrifugal pump body (1), a sealing gasket (22) fixedly connected to the surface of the fixed seat (21) close to the water pipe flange (3), a threaded ring (23) threadedly connected to the outer surface of the fixed seat (21), a plurality of insertion holes (24) equidistantly arranged on the outer surface of the threaded ring (23), a plurality of sliding grooves (25) equidistantly arranged in the fixed seat (21), two limiting rods (26) fixedly connected in the sliding grooves (25), a plurality of limiting grooves (27) equidistantly arranged on the outer surface of the fixed seat (21) and in communication with the sliding grooves (25), a recess (231) arranged on the inner wall of the threaded ring (23), and a positioning assembly (28) longitudinally movably arranged in the sliding groove (25) and extending into the recess (231) away from the pin rod (4).

2. The sodium hypochlorite delivery pump for chemical production according to claim 1, characterized in that: The positioning assembly (28) comprises a sliding seat (281) longitudinally and slidably connected to the outer surface of the limiting rod (26), a long groove (2811) arranged in the sliding seat (281), a sliding plate (2841) slidably connected in the long groove (2811), a positioning block (284) fixedly connected to the surface of the sliding plate (2841), a plurality of springs (2842) equidistantly fixedly arranged in the long groove (2811), an inclined groove (285) arranged on the upper surface of the positioning block (284), a positioning column (286) fixedly connected to the top end of the sliding groove (25), a limiting column (282) fixedly connected to the surface of the sliding seat (281) away from the positioning block (284), a plurality of steel balls (283) movably arranged in the limiting column (282), and the surface of the steel ball (283) extending to the outside of the limiting column (282).

3. The sodium hypochlorite delivery pump for chemical production according to claim 2, characterized in that: The outer surface of the limiting column (282) is inserted into the recess (231), the recess (231) is annular, and the surface of the steel ball (283) is rollingly connected to the inner wall of the recess (231).

4. The sodium hypochlorite delivery pump for chemical production according to claim 2, characterized in that: The end of the positioning column (286) is arc-shaped, the inclined groove (285) is trapezoidal, and the surface of the positioning column (286) abuts against the inner wall of the inclined groove (285).

5. The sodium hypochlorite delivery pump for chemical production according to claim 2, characterized in that: Under normal circumstances, the positioning block (284) slides towards the pin rod (4) by the elasticity of the spring (2842), and the top side end of the positioning block (284) is arc-shaped.

6. The sodium hypochlorite delivery pump for chemical production according to claim 2, characterized in that: The limiting column (282) is longitudinally and slidingly connected inside the limiting groove (27), and the end of the limiting column (282) away from the sliding base (281) extends to the outside of the fixing base (21).

7. The sodium hypochlorite delivery pump for chemical production according to claim 1, characterized in that: A liquid passing groove matched with the water pipe flange (3) is arranged at the inside center of the fixing base (21), and the outer surface of the fixing base (21) is provided with threads matched with the inner wall of the threaded ring (23), and the top of the pin rod (4) has a diameter greater than the end.

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