Filter with filtering structure for combined polyether production

Abstract

The utility model discloses a filter with a filtering structure for combined polyether production. The filter comprises a filtering mechanism and an infusion pump arranged at the bottom of the filtering mechanism, the filtering mechanism comprises a stock solution tank, the bottom end of the stock solution tank is fixedly connected with a first pipeline, and one end of the first pipeline is fixedly connected with a liquid conveying pump; wherein the output end of the liquid conveying pump is fixedly connected with a second pipeline, one end of the second pipeline is fixedly connected with the filter body, one side of the second pipeline is fixedly connected with a third pipeline, and the top end of the third pipeline is fixedly connected with the stock solution tank; wherein the interior of the filter body is fixedly connected with a filter bag, one side of the top of the filter bag is fixedly connected with a fourth pipeline, one side of the fourth pipeline is fixedly connected with a fifth pipeline, and the bottom of the fifth pipeline is fixedly connected with a clear liquid tank. Therefore, the filtering efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid filtration technology, specifically to a filter machine for the production of combined polyethers with a filtration structure. Background Technology

[0002] The production process of polyether polyols generates certain solid impurities and microporous dispersions of different sizes, which need to be filtered and transferred to the finished product storage tank. Existing methods for filtering viscous liquids are very troublesome, and the filtered solid impurities are also inconvenient to clean up, making them quite inconvenient to use.

[0003] Publication No. CN214680272U discloses a filter for the production of combined polyethers. It features a fixed filter screen and an adjustable filter hole structure, allowing for multi-purpose use by adjusting the size of the circular filter holes according to different needs. A brush structure facilitates the pushing of unfiltered residue into the circular filter holes for easy cleaning. It is very convenient to use. A drawer-type material holding structure and a conical discharge port facilitate the collection of product and residue. However, this patent still has the following problems in practical use:

[0004] Although this type of filter for polyether production has a brush structure that facilitates pushing unfiltered residue into the circular filter holes and cleaning the residue left by filtration, the back-and-forth cleaning by the brush alone cannot completely clean the residue on the filter screen, thus reducing the filtration efficiency of the device.

[0005] A filter with a filtration structure for the production of combined polyethers is proposed to address the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a filter for the production of combined polyethers with a filtration structure, in order to solve the problem mentioned in the background art that the current method of setting up a brush structure makes it easy to push unfiltered residue into the circular filter hole and clean the residue left by filtration. However, the brush can not completely clean the residue on the filter screen by simply cleaning back and forth, thus reducing the filtration effect of the device.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a filter for the production of combined polyethers with a filtration structure, comprising a filtration mechanism and an infusion pump installed at the bottom of the filtration mechanism;

[0008] Also includes:

[0009] The filtration mechanism includes a raw liquid tank, and a first pipe is fixedly connected to the bottom end of the raw liquid tank. One end of the first pipe is fixedly connected to an infusion pump.

[0010] The output end of the infusion pump is fixedly connected to a second pipe, one end of the second pipe is fixedly connected to the filter body, one side of the second pipe is fixedly connected to a third pipe, and the top end of the third pipe is fixedly connected to the original liquid tank.

[0011] The filter body has a filter bag fixedly connected inside, a fourth pipe fixedly connected to one side of the top of the filter bag, a fifth pipe fixedly connected to one side of the fourth pipe, and a clear liquid tank fixedly connected to the bottom of the fifth pipe.

[0012] Preferably, a sixth pipe is fixedly connected to the side of the filter body away from the fourth pipe, one end of the sixth pipe is fixedly connected to the third pipe, an air inlet pipe is fixedly connected to one side of the sixth pipe, and a control valve is fixedly connected to the middle of the air inlet pipe.

[0013] Preferably, a top cover is attached to the top of the filter body, a water inlet pipe is fixedly connected to the top of the top cover, a spray device is fixedly connected to the bottom of the water inlet pipe, and a slag discharge valve is fixedly connected to the center of the bottom of the filter body.

[0014] Preferably, a number of limiting blocks are fixedly connected to the outer side of the top of the filter body. The number of limiting blocks is six, and the limiting blocks are evenly distributed on the outer side of the top of the filter body. A connecting rod is attached to the inside of each limiting block.

[0015] Preferably, a fixing sleeve is fixedly connected to the center position of the outer side of the connecting rod, one end of the fixing sleeve is fixedly connected to the top cover, and a through hole is opened inside the connecting rod.

[0016] Preferably, a push rod is provided inside the through hole, and a spring is sleeved on the outside of the push rod, with one end of the spring being fitted and connected to the connecting rod.

[0017] Preferably, the connecting rod has symmetrical limit grooves on both sides near the limit block, and steel balls are provided inside the two limit grooves. One side of the steel ball is in contact with the push rod, and the other side of the steel ball is in contact with the limit block.

[0018] Compared with the prior art, the beneficial effects of this utility model are: this filter for the production of combined polyethers with a filtration structure can quickly clean the residue on the filter bag by setting up a filtration mechanism, thereby improving the filtration efficiency of the device. The specific details are as follows:

[0019] By setting up a filtration mechanism, residue on the filter bags can be quickly cleaned, thereby improving the filtration efficiency of the device. The filter body is filled with the liquid to be filtered via a pump. After standing for a period of time, a coating forms on the surface of the filter bags. The filtered liquid is then transported to the clear liquid pipe for storage. When the filter cake coating on the filter bag surface reaches its maximum allowable thickness, filtration ends and the pump is stopped. Gas is introduced through the air inlet pipe to compress the remaining material in the filter body into the raw liquid tank. Gas is then used to continue drying the filter cake coating. After opening the slag discharge valve at the bottom, gas is introduced into the fourth pipe, causing the filter bags to be subjected to a reverse reaction. The impact of the gas can cause the externally dried filter cake to expand, crack, and fall out. After the slag is discharged, the filter bag and the inner cylinder of the filter can be rinsed by the spray device at the top, thus cleaning the inside of the filter body. By pressing the push rod inward to compress the spring, the limit of the push rod on the steel ball is released. Pulling the connecting rod outward will cause the steel ball to fall into the through hole along the inner wall of the limit groove, thereby releasing the limit of the steel ball on the limit block. The connecting rod can then be pulled out from the limit block, realizing the disassembly between the top cover and the filter body, which facilitates the maintenance of the internal components of the filter body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the front cross-section structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Schematic diagram of the external structure of the main body of the medium filter;

[0022] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0023] Figure 4 This utility model Figure 3 Schematic diagram of the internal structure of the middle connecting rod;

[0024] Figure 5 This utility model Figure 4 A schematic diagram of the spring in its compressed state.

[0025] In the diagram: 1. Filtration mechanism; 101. Raw material tank; 102. First pipe; 103. Infusion pump; 104. Second pipe; 105. Filter body; 106. Third pipe; 107. Filter bag; 108. Fourth pipe; 109. Fifth pipe; 110. Clear liquid tank; 111. Sixth pipe; 112. Air inlet pipe; 113. Control valve; 114. Top cover; 115. Water inlet pipe; 116. Spray device; 117. Slag discharge valve; 118. Limiting block; 119. Connecting rod; 120. Fixing sleeve; 121. Through hole; 122. Push rod; 123. Spring; 124. Limiting groove; 125. Steel ball. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 This utility model provides a technical solution: a filter for the production of combined polyethers with a filtration structure, including a filtration mechanism 1 and an infusion pump 103 installed at the bottom of the filtration mechanism 1; the filtration mechanism 1 includes a raw liquid tank 101, a first pipe 102 fixedly connected to the bottom end of the raw liquid tank 101, and one end of the first pipe 102 fixedly connected to the infusion pump 103; a second pipe 104 fixedly connected to the output end of the infusion pump 103, a filter body 105 fixedly connected to one end of the second pipe 104, a third pipe 106 fixedly connected to one side of the second pipe 104, and the top end of the third pipe 106 fixedly connected to the raw liquid tank 101; by setting the infusion pump 103, it is convenient to input the liquid to be filtered into the filter body 105;

[0028] A filter bag 107 is fixedly connected inside the filter body 105. A fourth pipe 108 is fixedly connected to one side of the top of the filter bag 107. A fifth pipe 109 is fixedly connected to one side of the fourth pipe 108. A clear liquid tank 110 is fixedly connected to the bottom of the fifth pipe 109. An air pump is connected to one end of the fourth pipe 108.

[0029] A sixth pipe 111 is fixedly connected to the side of the filter body 105 away from the fourth pipe 108. One end of the sixth pipe 111 is fixedly connected to the third pipe 106. An air inlet pipe 112 is fixedly connected to one side of the sixth pipe 111. A control valve 113 is fixedly connected in the middle of the air inlet pipe 112. Control valves 113 are installed in the middle of the second pipe 104, the third pipe 106, the fourth pipe 108, the fifth pipe 109 and the sixth pipe 111.

[0030] A top cover 114 is attached to the top of the filter body 105. A water inlet pipe 115 is fixedly connected to the top of the top cover 114. A spray device 116 is fixedly connected to the bottom of the water inlet pipe 115. A slag discharge valve 117 is fixedly connected to the center of the bottom of the filter body 105. The spray device 116 is used to facilitate the cleaning of the inner cylinder of the filter body 105.

[0031] A number of limiting blocks 118 are fixedly connected to the outer side of the top of the filter body 105. There are six limiting blocks 118, and the limiting blocks 118 are evenly distributed on the outer side of the top of the filter body 105. A connecting rod 119 is fitted inside the limiting block 118. A fixing sleeve 120 is fixedly connected to the center position of the outer side of the connecting rod 119. One end of the fixing sleeve 120 is fixedly connected to the top cover 114. A through hole 121 is opened inside the connecting rod 119. The fixing sleeve 120 is used to fix the position of the connecting rod 119.

[0032] A push rod 122 is provided inside the through hole 121, and a spring 123 is sleeved on the outside of the push rod 122. One end of the spring 123 is in contact with the connecting rod 119. By setting the spring 123, the push rod 122 can be automatically reset.

[0033] The connecting rod 119 has symmetrically provided limiting grooves 124 on both sides near the limiting block 118. Steel balls 125 are provided inside the two limiting grooves 124. One side of the steel ball 125 is in contact with the push rod 122, and the other side of the steel ball 125 is in contact with the limiting block 118. By using the cooperation between the steel ball 125, the push rod 122 and the limiting block 118, the top cover 114 can be fixed to the top of the filter body 105. A sealing ring is provided at the contact point between the top cover 114 and the filter body 105, thereby improving the sealing performance of the device.

[0034] Working principle: Before using this type of filter for the production of combined polyethers with a filtration structure, it is necessary to check the overall condition of the equipment to ensure that it can operate normally. Figure 1 - Figure 5 As shown, first close all control valves 113, then start the infusion pump 103 and open the control valve 113 at the second pipeline 104 to fill the filter body 105 with the liquid to be filtered. After standing for a period of time, a filter cake coating will form on the surface of the filter bag 107. Then open the control valve 113 at the fifth pipeline to transport the filtered liquid to the clear liquid pipe 110 for storage.

[0035] Secondly, when the filter cake coating on the surface of the filter bag 107 reaches the maximum allowable thickness, filtration ends and the infusion pump 103 is stopped. At the same time, the control valves 113 at the fifth pipe 109 and the second pipe 104 are closed, and the control valve 113 at the third pipe 106 is opened. Gas is input from the air inlet pipe 112 to compress the remaining material in the filter body 105 into the raw liquid tank 101. Gas is used to continue to dry the filter cake coating. Then, the slag discharge valve 117 at the bottom of the filter body 105 is opened, and gas is introduced into the fourth pipe 108. The filter bag 107 is impacted by the reverse gas, which expands and cracks the externally dried filter cake and discharges it. After the slag discharge is completed, the filter bag 107 and the inner cylinder of the filter body 105 can be rinsed by the spray device 116 at the top to complete the cleaning of the inside of the filter body.

[0036] Finally, when it is necessary to open the top cover 114, by pressing the push rod 122 inward to compress the spring 123, the limit of the push rod 122 on the steel ball 125 is released. Then, by pulling the connecting rod 119 outward, the steel ball 125 can fall into the through hole 121 along the inner wall of the limiting groove 124, thereby releasing the limit of the steel ball 125 on the limiting block 118. The connecting rod 119 can then be pulled out from the limiting block 118, thus realizing the disassembly between the top cover 114 and the filter body 105, which facilitates the maintenance of the internal components of the filter body 105.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A filter for producing combined polyethers with a filtration structure, comprising a filtration mechanism (1) and an infusion pump (103) installed at the bottom of the filtration mechanism (1); Its features are, Also includes: The filtration mechanism (1) includes a raw liquid tank (101), and a first pipe (102) is fixedly connected to the bottom end of the raw liquid tank (101). One end of the first pipe (102) is fixedly connected to the infusion pump (103). The output end of the infusion pump (103) is fixedly connected to a second pipe (104), one end of the second pipe (104) is fixedly connected to a filter body (105), one side of the second pipe (104) is fixedly connected to a third pipe (106), and the top end of the third pipe (106) is fixedly connected to the original liquid tank (101). The filter body (105) is internally fixedly connected to a filter bag (107), a fourth pipe (108) is fixedly connected to one side of the top of the filter bag (107), a fifth pipe (109) is fixedly connected to one side of the fourth pipe (108), and a clear liquid tank (110) is fixedly connected to the bottom of the fifth pipe (109).

2. The filter for producing combined polyethers with a filtration structure according to claim 1, characterized in that: The filter body (105) is fixedly connected to a sixth pipe (111) on the side away from the fourth pipe (108). One end of the sixth pipe (111) is fixedly connected to the third pipe (106). An air inlet pipe (112) is fixedly connected to one side of the sixth pipe (111). A control valve (113) is fixedly connected in the middle of the air inlet pipe (112).

3. A filter for producing combined polyethers with a filtration structure according to claim 2, characterized in that: The top of the filter body (105) is fitted with a top cover (114), the top of the top cover (114) is fixedly connected with a water inlet pipe (115), the bottom of the water inlet pipe (115) is fixedly connected with a spray device (116), and the center of the bottom of the filter body (105) is fixedly connected with a slag discharge valve (117).

4. A filter for producing combined polyethers with a filtration structure according to claim 3, characterized in that: A number of limiting blocks (118) are fixedly connected to the outer side of the top of the filter body (105). There are six limiting blocks (118), and the limiting blocks (118) are evenly distributed on the outer side of the top of the filter body (105). A connecting rod (119) is attached to the inside of the limiting block (118).

5. A filter for producing combined polyethers with a filtration structure according to claim 4, characterized in that: A fixing sleeve (120) is fixedly connected to the center position of the outer side of the connecting rod (119). One end of the fixing sleeve (120) is fixedly connected to the top cover (114). A through hole (121) is opened inside the connecting rod (119).

6. A filter for producing combined polyethers with a filtration structure according to claim 5, characterized in that: A push rod (122) is provided inside the through hole (121), and a spring (123) is sleeved on the outside of the push rod (122). One end of the spring (123) is in contact with the connecting rod (119).

7. A filter for producing combined polyethers with a filtration structure according to claim 5, characterized in that: The connecting rod (119) has symmetrical limit grooves (124) on both sides near the limit block (118). A steel ball (125) is provided inside the two limit grooves (124). One side of the steel ball (125) is in contact with the push rod (122), and the other side of the steel ball (125) is in contact with the limit block (118).

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