A demineralized water feeding device for a polymerization unit

Abstract

This utility model belongs to the technical field of feed pumps, specifically relating to a feed device for demineralized water in a polymerization unit. It includes a base, with a feed pump mounted on the upper end of the base. A frequency converter is in contact with the front of the base and electrically connected to the feed pump. A quick-release mechanism is shared between the frequency converter and the base. An air pump is fixedly installed on the inner bottom of the base, with a connecting pipe fixedly connected to its input end. By adding a frequency converter to the base for mounting the feed pump and providing a corresponding quick-release mechanism, the starting current of the feed pump is significantly reduced, resulting in smooth motor operation. Furthermore, the locking pin can be released or secured simply by pushing the push frame, thanks to the snap-fit ​​engagement between the positioning block and the mounting base, combined with the spring reset function of the inclined seat. This convenient and tool-free operation facilitates subsequent maintenance of the frequency converter.

Description

Technical Field

[0001] This solution belongs to the field of feed pumps, specifically involving a demineralized water feed device for a polymerization unit. Background Technology

[0002] In industrial production processes such as chemical, petroleum, and pharmaceutical manufacturing, deionized water, as a high-purity solvent, is widely used in polymerization reactions, equipment cleaning, and cooling systems. The feeding process of deionized water requires precise control of flow rate and pressure, which is typically accomplished by a feed pump.

[0003] The demineralized water feed pump starts and stops frequently every day. During startup, the current reaches its maximum value instantly, the magnetic field of the motor windings reaches its maximum rapidly, the rotor aluminum bars heat up and expand, causing displacement, and the rotor aluminum bars are subjected to magnetic force, resulting in metal fatigue and motor bar breakage. In addition, under cold conditions, the volute of the feed pump may freeze due to low temperature, causing the pump body to jam or the seal to fail, affecting the continuity of production. Utility Model Content

[0004] The purpose of this solution is to provide a demineralized water feeding device for a polymerization unit, which solves the problem of frequent start-up and easy damage of existing demineralized water feeding pumps, and also solves the problem of the volute of the feeding pump freezing due to low temperature under cold operating conditions.

[0005] To achieve the above objectives, this solution provides a demineralized water feeding device for a polymerization unit, including a base. A feeding pump is installed at the upper end of the base. A frequency converter is in contact with the front of the base and is electrically connected to the feeding pump. A quick-release mechanism is provided between the frequency converter and the base. An air pump is fixedly installed on the inner bottom of the base. A connecting pipe is fixedly connected to the input end of the air pump. The connecting pipe passes through the base and extends to the outside of the base. A flow guide is connected to the end of the connecting pipe, and the position of the flow guide corresponds to the tail position of the feeding pump. A conveying pipe is fixedly connected to the output end of the air pump. The conveying pipe passes through the base and extends to the outside of the base. An arc-shaped pipe is fixedly connected to the end of the conveying pipe. The position of the arc-shaped pipe corresponds to the volute position of the feeding pump. A through hole is opened in the inner wall of the arc-shaped pipe.

[0006] The principle of this solution is as follows: In use, the inclined seat is first pushed by the pusher, and the inclined seat moves under force. Then the frequency converter is attached to the front of the base and located between the two mounting seats. Then the pusher is released, and the inclined seat is reset under the action of the spring. The locking pin on the inclined seat is inserted into the positioning block of the frequency converter, thus completing the installation of the frequency converter. Then the frequency converter is connected to the feeding pump through the wiring harness. After adding the frequency converter to the feeding pump, the starting current of the feeding pump is greatly reduced, and the motor of the feeding pump runs smoothly.

[0007] In addition, the guide shroud captures the hot air emitted from the motor tail and delivers it to the arc pipe via the air pump. The air is then evenly sprayed onto the volute through the multi-hole perforation, effectively preventing the volute from freezing in low-temperature environments and ensuring the stable operation of the feed pump.

[0008] The technical advantages of this solution are as follows: By adding a frequency converter to the base used for installing the feeding pump and setting a corresponding quick-release mechanism, the starting current of the feeding pump is significantly reduced after adding the frequency converter, making the motor of the feeding pump run smoothly. In particular, through the snap-fit ​​cooperation between the positioning block and the mounting base, combined with the spring reset function of the inclined plate, the locking pin can be released or fixed simply by pushing the push frame. The operation is convenient and tool-free, which facilitates the later maintenance of the frequency converter.

[0009] Through the coordinated design of the air pump, the guide shroud, and the arc tube, the heat of the feed pump motor is efficiently recovered and reused. The guide shroud captures the hot air emitted from the motor tail and delivers it to the arc tube via the air pump. The hot air is then evenly blown onto the volute through the multi-holes, effectively preventing the volute from freezing in low-temperature environments and ensuring the stable operation of the feed pump.

[0010] Furthermore, an air inlet filter is fixedly connected to the inlet of the flow guide shroud, and the air inlet filter is made of stainless steel. The air inlet filter filters the hot air generated by the motor of the feeding pump, which is drawn in by the vacuum pump.

[0011] Furthermore, multiple through holes are provided, and these through holes are arranged in an array along the arc surface of the arc tube. The presence of multiple through holes allows the heat generated by the motor of the feed pump to be evenly distributed onto the volute of the feed pump, preventing freezing at that location due to environmental factors.

[0012] Furthermore, the quick-release mechanism includes two mounting seats fixedly connected to the front of the base. Both mounting seats are in contact with the frequency converter. Positioning blocks are fixedly connected to both sides of the frequency converter, and the two positioning blocks are respectively engaged with the two mounting seats. An inclined seat is slidably connected inside the mounting seat, and a locking pin is fixedly connected to the inclined seat. The locking pin is inserted into the positioning block. A pusher is slidably connected to the side of the mounting seat, and the pusher is through the mounting seat. The pusher is U-shaped, and its end abuts against the inclined surface of the inclined seat. The quick-release mechanism facilitates the rapid installation and removal of the frequency converter. After adding the frequency converter to the feeding pump, the starting current of the feeding pump is significantly reduced, resulting in smoother motor operation.

[0013] Furthermore, the inclined seat has ball bearings on its side, which are slidably connected to the inner surface of the mounting base. The ball bearings reduce the relative friction between the inclined seat and the mounting base.

[0014] Furthermore, a guide pin is fixedly connected to the inner wall of the mounting base, and the guide pin is slidably connected to the inclined seat. A spring is installed inside the inclined seat, one end of which is fixedly connected to the guide pin, and the other end of which is fixedly connected to the inner surface of the inclined seat. The guide pin and spring provide auxiliary resetting and guiding functions for the inclined seat.

[0015] Furthermore, a limiting ring is fixedly connected to the pusher, and the limiting ring contacts the inner wall of the mounting base. The limiting ring serves to limit the pusher's movement, preventing it from detaching from the mounting base. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is an embodiment of the present utility model. Figure 1 A schematic diagram of a partial structure;

[0018] Figure 3 This is an embodiment of the present utility model. Figure 1 A front sectional view;

[0019] Figure 4 This is an embodiment of the present utility model. Figure 1 A front sectional view of the quick-release mechanism;

[0020] Figure 5 This is an embodiment of the present utility model. Figure 4 Enlarged view of point A.

[0021] The following detailed explanation illustrates the specific implementation methods:

[0022] The reference numerals in the accompanying drawings include: base 1, feeding pump 2, frequency converter 3, quick release mechanism 4, air pump 5, connecting pipe 6, flow guide 7, air inlet filter 8, conveying pipe 9, arc pipe 10, through hole 11, mounting base 41, positioning block 42, inclined plate base 43, locking pin 44, ball bearing 45, guide pin 46, spring 47, push frame 48, limit ring 49. Detailed Implementation

[0023] The basic implementation examples are as follows: Figures 1-4As shown: A demineralized water feeding device for a polymerization unit includes a base 1, a feeding pump 2 installed at the upper end of the base 1, a frequency converter 3 in contact with the front of the base 1, the frequency converter 3 being electrically connected to the feeding pump 2, an air pump 5 fixedly installed at the bottom inner side of the base 1, a connecting pipe 6 fixedly connected to the input end of the air pump 5, the connecting pipe 6 passing through the base 1 and extending to the outside of the base 1, a flow guide 7 connected to the end of the connecting pipe 6, and the position of the flow guide 7 corresponding to the tail position of the feeding pump 2, an air inlet filter 8 fixedly connected to the inlet of the flow guide 7, and the air inlet filter 8 being made of stainless steel. The air intake filter 8 filters the hot air drawn in by the vacuum pump 5 from the motor of the feed pump 2. A delivery pipe 9 is fixedly connected to the output end of the vacuum pump 5, passing through the base 1 and extending to the outside of the base 1. An arc-shaped pipe 10 is fixedly connected to the end of the delivery pipe 9, with its position corresponding to the volute of the feed pump 2. Multiple through holes 11 are provided on the inner wall of the arc-shaped pipe 10, arranged in an array along its arc surface. These multiple through holes 11 allow the heat generated by the motor of the feed pump 2 to be evenly distributed over the volute of the feed pump 2, preventing freezing due to environmental factors.

[0024] like Figure 4 , Figure 5As shown, a quick-release mechanism 4 is provided between the frequency converter 3 and the base 1. The quick-release mechanism 4 facilitates the quick disassembly and assembly of the frequency converter 3. After the frequency converter 3 is added to the feed pump 2, the starting current of the feed pump 2 is greatly reduced, making the motor of the feed pump 2 run smoothly. The quick-release mechanism 4 includes two mounting seats 41 fixedly connected to the front of the base 1. Both mounting seats 41 are in contact with the frequency converter 3. Positioning blocks 42 are fixedly connected to both sides of the frequency converter 3. The two positioning blocks 42 are respectively engaged with the two mounting seats 41. An inclined seat 43 is slidably connected inside the mounting seat 41. A locking pin 44 is fixedly connected to the inclined seat 43. The locking pin 44 is inserted into the positioning block 42. A ball bearing 45 is provided on the side of the inclined seat 43. The ball bearing 45 is slidably connected to the inner surface of the mounting seat 41. The ball bearings 45 reduce the relative friction between the inclined seat 43 and the mounting base 41. A guide pin 46 is fixedly connected to the inner wall of the mounting base 41, and the guide pin 46 is slidably connected to the inclined seat 43. A spring 47 is installed inside the inclined seat 43; one end of the spring 47 is fixedly connected to the guide pin 46, and the other end is fixedly connected to the inner surface of the inclined seat 43. The guide pin 46 and spring 47 provide auxiliary reset and movement guidance for the inclined seat 43. A pusher 48 is slidably connected to the side of the mounting base 41, and the pusher 48 penetrates the mounting base 41. The pusher 48 is U-shaped, and its end abuts against the inclined surface of the inclined seat 43. A limit ring 49 is fixedly connected to the pusher 48, and the limit ring 49 contacts the inner wall of the mounting base 41. The limit ring 49 limits the pusher 48, preventing it from falling off the mounting base 41.

[0025] The specific implementation process of this utility model is as follows: In use, firstly, the inclined seat 43 is pushed by the pusher 48, and the inclined seat 43 moves under force. Then, the frequency converter 3 is attached to the front of the base 1 and located between the two mounting seats 41. Then, the pusher 48 is released, and the inclined seat 43 is reset under the action of the spring 47. The locking pin 44 on the inclined seat 43 is inserted into the positioning block 42 of the frequency converter 3, thereby completing the installation of the frequency converter 3. Then, the frequency converter 3 is connected to the feeding pump 2 through the wiring harness. In this way, after the frequency converter 3 is added to the feeding pump 2, the current when the feeding pump 2 starts is greatly reduced, so that the motor of the feeding pump 2 runs smoothly.

[0026] In addition, the guide shroud 7 captures the hot air emitted from the tail of the motor and delivers it to the arc pipe 10 via the air pump 5. The air is then evenly blown onto the volute through the multi-hole through-hole 11, effectively preventing the volute from freezing in low-temperature environments and ensuring the stable operation of the feed pump 2.

[0027] This solution adds a frequency converter 3 to the base 1 used for installing the feeding pump 2 and sets up a corresponding quick-release mechanism 4. After adding the frequency converter 3 to the feeding pump 2, the starting current of the feeding pump 2 is greatly reduced, making the motor of the feeding pump 2 run smoothly. In particular, through the snap-fit ​​cooperation between the positioning block 42 and the mounting base 41, combined with the reset function of the spring 47 of the inclined base 43, the locking pin 44 can be released or fixed simply by pushing the push frame 48. The operation is convenient and tool-free, which facilitates the later maintenance of the frequency converter 3. Through the coordinated design of the air pump 5, the guide shroud 7 and the arc tube 10, the heat of the feeding pump 2 motor is efficiently recovered and reused. The guide shroud 7 captures the hot air emitted from the tail of the motor and delivers it to the arc tube 10 through the air pump 5. It is then evenly blown to the volute through the multi-hole through-hole 11, effectively preventing the volute from freezing in low-temperature environments and ensuring the stable operation of the feeding pump 2.

[0028] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A polymeric device desalinated water feeding device comprising a base, characterized in that: A feeding pump is installed at the upper end of the base. A frequency converter is in contact with the front of the base. The frequency converter is electrically connected to the feeding pump. A quick-release mechanism is provided between the frequency converter and the base. An air pump is fixedly installed on the inner bottom of the base. A connecting pipe is fixedly connected to the input end of the air pump. The connecting pipe passes through the base and extends to the outside of the base. A flow guide is provided at the end of the connecting pipe, and the position of the flow guide corresponds to the tail position of the feeding pump. A conveying pipe is fixedly connected to the output end of the air pump. The conveying pipe passes through the base and extends to the outside of the base. An arc-shaped tube is fixedly connected to the end of the conveying tube. The position of the arc-shaped tube corresponds to the volute position of the feeding pump. A through hole is opened in the inner wall of the arc-shaped tube.

2. A desalted water feeding device for a polymerization apparatus according to claim 1, characterized by: An air intake filter is fixedly connected to the inlet of the air guide, and the air intake filter is made of stainless steel.

3. The desalted water feeding device for a polymerization apparatus according to claim 1, characterized by: The number of through holes is set to multiple, and the multiple through holes are distributed in an array along the arc surface of the arc tube.

4. The desalted water feeding device of a polymerization apparatus according to claim 1, characterized by: The quick-release mechanism includes two mounting seats fixedly connected to the front of the base. Both mounting seats are in contact with the frequency converter. Positioning blocks are fixedly connected to both sides of the frequency converter. The two positioning blocks are respectively engaged with the two mounting seats. An inclined seat is slidably connected inside the mounting seat. A locking pin is fixedly connected to the inclined seat. The locking pin is inserted into the positioning block. A push frame is slidably connected to the side of the mounting seat. The push frame is through the mounting seat and is U-shaped. The end of the push frame abuts against the inclined surface of the inclined seat.

5. A desalted water feeding device for a polymerization apparatus according to claim 4, characterized in that: The inclined seat has ball bearings on its side, and the ball bearings are slidably connected to the inner surface of the mounting seat.

6. A desalted water feeding device for a polymerization apparatus according to claim 4, characterized by: The inner wall of the mounting base is fixedly connected to a guide pin, which is slidably connected to the inclined seat. A spring is provided inside the inclined seat, one end of which is fixedly connected to the guide pin, and the other end of which is fixedly connected to the inner surface of the inclined seat.

7. A desalted water feeding device for a polymerization apparatus according to claim 4, characterized by: A limiting ring is fixedly connected to the pusher, and the limiting ring is in contact with the inner wall of the mounting base.

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