Fine filtering device for high-viscosity glue

Abstract

The fine filtering device comprises a storage tank, a rotor pump and a filtering structure, the storage tank, the rotor pump and the filtering structure are connected through pipelines, the filtering structure is arranged to be a plurality of pull plate filters arranged in parallel, each pull plate filter comprises a detachably arranged filter screen, and the filter screen is connected with the rotor pump through a pipeline. Valves are arranged on the outlet side of the storage tank, the inlet side and the outlet side of the rotor pump and the inlet side and the outlet side of each pull plate filter. Due to the arrangement of the detachable filter screen in the pull plate filter, when the filter screen in the first pull plate filter is blocked, continuous production can be realized by closing the first pull plate filter and opening the second pull plate filter, the continuous production is ensured, meanwhile, the closed first pull plate filter is independent, and the filter screen of the first pull plate filter is replaced for later use; and when the filter screen in the second pull plate filter is blocked, the second pull plate filter is closed, and the first pull plate filter is opened for filtering, so that circulating production can be ensured.

Description

Technical Field

[0001] The present application relates to the technical field of filtering equipment, and in particular to a fine filtering device for high-viscosity glue. Background Art

[0002] Room temperature vulcanized silicone rubber is an old variety of general silicone rubber, with the advantages of water resistance, ozone resistance, arc resistance, corona resistance and weather aging resistance. It can be used in the temperature range of -60 to 200 ° C, so it is widely used as a potting and sealing material for electronic and electrical components, moisture-proof, shock-proof, high and low temperature resistant potting and sealing materials for instruments and meters; it can also be used to make molds, cast polyester resins, epoxy resins and low melting point alloy parts; it can also be used as a dental impression material. Room temperature vulcanized silicone rubber can be classified into low viscosity, regular viscosity and high viscosity according to viscosity. The viscosity below 1500cS is low viscosity, 1500cS to 200,000cS is regular viscosity, and the viscosity above 200,000cS is high viscosity. High viscosity 107 glue has excellent properties of softness, hydrophobicity and moisturizing. Although high-viscosity 107 glue has more excellent properties than conventional 107 glue and has a large market demand, due to its high viscosity, impurities in the packaging process cannot be completely filtered out, resulting in slow packaging efficiency and a large number of impurities. In view of the wide application of high-viscosity 107 glue and the large market demand, it is urgent to develop new filtration methods to achieve the purpose of removing impurities.

[0003] The existing production method of 107 glue uses hydroxyl-terminated polydimethylsiloxane linear body as raw material and potassium hydroxide as catalyst. When the viscosity of 107 glue is very high, water is added to degrade it, and finally phosphate is added to neutralize it to remove low molecules to obtain the target product of 107 glue. After the cycle is completed, it is pumped into the corresponding finished product intermediate tank of each line through the de-lowering circulation pump, and then the rotor pump is used to transport the material to the material barrel. However, the above method uses a 75μm filter bag of a bag filter for filtration during packaging. If the packaging frequency is fast, it will cause the pressure in the filter to be high, thereby crushing the filter bag and producing a large number of defective products. If the packaging frequency is slow, it will affect the de-lowering of the previous system and break the production balance.

[0004] Therefore, it is necessary to develop a high-efficiency filtering device for high-viscosity fluid materials such as 107 glue. Utility Model Content

[0005] The purpose of the present application is to provide a fine filtering device for high-viscosity glue.

[0006] To achieve the above objectives, the technical solution adopted in this application is: a fine filtration device for high-viscosity glue, comprising a storage tank, a rotor pump and a filtration structure, wherein the storage tank, the rotor pump and the filtration structure are connected by pipelines, and the filtration structure is configured as a plurality of pull-plate filters arranged in parallel, the pull-plate filters include hard filter holes, and valves are provided on the outlet side of the storage tank, the inlet and outlet sides of the rotor pump, and the inlet and outlet sides of each of the pull-plate filters.

[0007] Preferably, the pull plate filter comprises a detachable filter screen, and the hard filter holes are formed on the filter screen.

[0008] As a preferred embodiment, two pull-plate filters are provided.

[0009] As a preference, the number of the storage tanks is set to two or more, all of the storage tanks are arranged in parallel and have valves at the bottom.

[0010] Further preferably, a feed port, a nitrogen port and a vent port are provided at the top of the storage tank, and the vent port is provided with a pipeline leading to the bottom of the inner cavity of the storage tank.

[0011] As a preference, the filter screen is configured as a stainless steel filter screen plate.

[0012] Further preferably, the filter screen plate is bent or a plurality of the filter screen plates are spliced ​​together to form a cylindrical or square filter screen bag, and a detachable mounting portion is formed during the molding process.

[0013] Furthermore, the mesh number of the filter screen is 250 to 320.

[0014] As a preference, a pressure sensor is provided in the pull-plate filter, and the pressure sensor is suitable for monitoring the filtering pressure in the pull-plate filter; all the valves are electrically controlled valves, and the pressure sensor is electrically connected to the valves.

[0015] As a preference, a condenser is provided in the pipeline between the rotor pump and the pull plate filter, the condenser having a circulating liquid inlet located at a lower portion and a circulating liquid outlet located at an upper portion, and the coolant circulates in the condenser from bottom to top.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] By providing a pull plate filter with hard filter holes, the pull plate filter is not prone to filter hole deformation when subjected to a large filtering pressure, thereby preventing unfiltered materials from passing directly when the pressure is high, thereby reducing the generation of defective products.

[0018] During normal operation, the valve on the outlet side of the storage tank is opened, the valves at the rotor pump are opened, and the inlet and outlet valves of one of the pull-plate filters are opened, and the material is pumped from the storage tank into the pull-plate filter for filtration before being discharged. Due to the setting of the detachable filter screen in the pull-plate filter, when the filter screen in the first pull-plate filter is blocked, the first pull-plate filter is closed and the second pull-plate filter is opened to continuously produce, ensuring uninterrupted production. At the same time, the closed first pull-plate filter is separated and its filter screen is replaced for use; when the filter screen in the second pull-plate filter is blocked, the second pull-plate filter is closed and the first pull-plate filter is opened to filter, thus ensuring cyclic production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of an embodiment of the present application.

[0020] Figure 2 It is a schematic diagram of the filter screen plate and the filter screen bag in this application.

[0021] In the figure: 1. nitrogen inlet; 2. feed inlet; 3. venting port; 4. storage tank; 4a. first storage tank; 4b. second storage tank; 5. rotor pump; 6. condenser; 7. pull-plate filter; 7a. first pull-plate filter; 7b. second pull-plate filter; 8. filter mesh plate; 81. filter mesh bag; 9. detachable mounting part. DETAILED DESCRIPTION

[0022] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0025] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0026] Example:

[0027] like Figure 1 , a fine filtering device for high viscosity glue, this embodiment is preferably used for filtering 107 glue, which mainly includes a storage tank 4, a rotor pump 5 for material transportation, two or more pull-plate filters 7 and pipelines for connecting various components, the pipeline is a line formed by the pipelines for connecting various components, the pull-plate filter 7 includes a detachable filter screen, and the pull-plate filter 7 mainly filters through the filter screen. Valves are provided on the outlet side of each storage tank 4, the inlet side and outlet side of the rotor pump 5, and the inlet side and outlet side of each pull-plate filter 7. During normal operation, the valve on the outlet side of the storage tank 4 is opened, the valves at the rotor pump 5 are all opened, and the inlet and outlet side valves of one of the pull-plate filters 7 are opened, and the material is pumped from the storage tank 4 into the pull-plate filter 7 for filtration and then discharged. Among them, due to the setting of the detachable filter screen in the pull plate filter 7, in actual production, when the filter screen in the current first pull plate filter 7a is blocked, the first pull plate filter 7a is closed and the second pull plate filter 7b is opened. At this time, the production is not interrupted, and the closed first pull plate filter 7a is separated and its filter screen is replaced for use; when the filter screen in the second pull plate filter 7b is blocked, the second pull plate filter 7b is closed, and if there is a third pull plate filter 7, the third pull plate filter 7 can be used for filtering first, and if there is no third pull plate filter 7, the first pull plate filter 7a is opened for filtering. The unused pull plate filter 7 has a better discharge effect than the pull plate filter 7 with a replaced filter screen. Therefore, if there is an unused pull plate filter 7, it can be used first when the previous pull plate filter 7 is blocked to ensure the best filtering and discharging effect.

[0028] In this embodiment, Figure 2As shown, the filter screen can be set as a filter screen plate 8 or a filter screen bag 81, and the material is preferably stainless steel, which can be detachably installed in the pull plate filter 7 for screening and filtering by means of, for example, clamping with a pad, fixing with screws, etc. Obviously, the filter holes of the stainless steel filter screen plate 8 are not easy to deform (i.e., hard filter holes). The filter screen plate 8 is bent or multiple pieces are spliced ​​to obtain a cylindrical or square filter screen bag 81, and a part of the filter screen plate 8 is reserved during bending or splicing to form a detachable mounting portion 9. The filter holes of the formed filter screen bag 81 are also not easy to deform, which can prevent the filter screen from being stretched open by the material when the filtering pressure is high, thereby allowing unqualified materials to pass directly. The filter screen bag 81 produced in this way has a larger filtering area, and the filter holes and the surrounding structures do not change much, so the strength of the filter holes changes less. The preferred filter mesh size is 250-320 meshes. Within this range, it has a good filtering effect on high-viscosity fluids such as 107 glue, and has a moderate blocking effect on the fluid passing through. The resistance caused by the filter mesh will not be too large to cause excessive internal pressure. Figure 2 As shown, the mounting holes at the detachable mounting part 9 are shown as two small holes in the attached figure, and can also be set as small holes consistent with the filter mesh holes, which are directly used as positioning holes, and a mounting groove is opened on the pull plate filter, and the filter mesh plate or filter mesh bag is inserted, and the detachable fixing can be realized by screwing in the detachable mounting part 9. Of course, the detachability of this embodiment can also be achieved by common means such as buckles, which will not be described one by one below.

[0029] In this embodiment, the material storage tank 4 can be provided as one or multiple storage tanks can be provided in parallel. Figure 1 A first storage tank 4a and a second storage tank 4b are provided, and the first storage tank 4a and the second storage tank 4b have the same functions and can be used to store fluids. Some fluids may need to be homogenized, removed from low molecules, etc. after entering the storage tank 4. Two or more storage tanks 4 can be provided so that the storage tanks 4 can be used in turn according to the order of feeding to achieve the purpose of continuous production without stopping for feeding. For example, feed is first added to the first storage tank 4a to remove low molecules, and then feed is also added to the second storage tank 4b to remove low molecules. Therefore, after the treatment in the first storage tank 4a is completed, the rotor pump 5 is directly turned on to start filtering, and the valve at the bottom of the second storage tank 4b is closed at this time; when the material in the first storage tank 4a is exhausted, the valve at the bottom is closed, and the second storage tank 4b is opened for continuous production, and at this time, the first storage tank 4a can be fed again to remove low molecules. After the second storage tank 4b is exhausted, the material in the first storage tank 4a has already been processed, and the first storage tank 4a is opened and the second storage tank 4b is closed to complete the cycle.

[0030] The first storage tank 4a and the second storage tank 4b are both provided with valves at the bottom, and the tops are both provided with a feed port 2, a nitrogen port 1 and a vent 3, wherein the vent 3 can be provided with a pipeline leading to the bottom of the inner cavity of the storage tank 4, and nitrogen is introduced through the nitrogen port 1. The nitrogen pressure causes the fluid in the storage tank 4 to be discharged from the vent 3 into other functional processing containers, such as a low-molecular-weight removal device, in which the low-molecular-weight removal operation is performed.

[0031] In order to judge whether the filter screen in the plate filter 7 is clogged, a pressure sensor can be set in the pipeline of the plate filter 7 to monitor the filtration pressure, and all valves are set as electric control valves. The pressure sensor can obtain pressure data. A control system is set in this filtration device, and the control system obtains the pressure sensor data and controls the electric valve. Preferably, when the filtration pressure is less than 0.8Mpa, the filtration pressure is considered to be within the normal range. When it exceeds 0.8Mpa, the plate filter 7 is closed and other plate filters 7 are opened for filtration.

[0032] In order to reduce the temperature of the material before packaging, a condenser 6 is arranged in the pipeline between the rotor pump 5 and the pull plate filter 7. The condenser 6 has a circulating liquid inlet located at the bottom and a circulating liquid outlet located at the top. The coolant circulates from bottom to top in the condenser 6 to ensure a better cooling effect.

[0033] According to Figure 1 For the filtering device, during production, first open the first plate filter 7a and the second plate filter 7b, then install a 300-mesh stainless steel filter, and reset the plate filter 7 after confirming that the filter is placed without deviation and the plate filter 7 is free of oil and dust. Open the condenser 6 to circulate water, then open the bottom valve of the first storage tank 4a or the second storage tank 4b, and then open the valves on the inlet and outlet sides of the first plate filter 7a, while ensuring that the inlet and outlet valves of the second plate filter 7b are closed, and then open the valves on the inlet and outlet sides of the rotor pump 5, start the rotor pump 5, and set the frequency to 25 Hz. At this time, the pressure in the pipeline is about 0.6Mpa, the material temperature is 100°C, and the packaging efficiency is 0.8m 3 / h. After 2 hours, the pressure in the pipeline rose to 0.7Mpa, the material temperature was 100℃, 1.6 tons of 107 glue were packaged, and the packaging efficiency dropped to 0.6m 3 / h. After 1h, the pipeline pressure is 0.8Mpa, and 2.2 tons of materials have been packaged cumulatively. At this time, the filtration pressure reaches the critical value, and the valves on the inlet and outlet sides of the first pull-plate filter 7a are closed, and the valves on the inlet and outlet sides of the second pull-plate filter 7b are opened, so as to replace the pull-plate filter 7 and continue to filter and package. Finally, after the first pull-plate filter 7a is packaged, a sample is taken to detect impurities. If the content does not exceed the standard and the appearance is normal, qualified material can be discharged.

[0034] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A fine filtering device for high-viscosity glue, comprising a storage tank, a rotor pump and a filtering structure, wherein the storage tank, the rotor pump and the filtering structure are connected by a pipeline, characterized in that: The filtering structure is configured as a plurality of pull-plate filters arranged in parallel, the pull-plate filters include hard filter holes, and valves are provided on the outlet side of the storage tank, the inlet and outlet sides of the rotor pump, and the inlet and outlet sides of each of the pull-plate filters.

2. The fine filtering device for high viscosity glue according to claim 1, characterized in that: The pull plate filter comprises a detachable filter net, and the hard filter holes are formed on the filter net.

3. The fine filtering device for high viscosity glue according to claim 2, characterized in that: The pull plate filters are provided with two.

4. The fine filtering device for high viscosity glue according to claim 1, characterized in that: The number of the material storage tanks is set to two or more, all of the material storage tanks are arranged in parallel and have valves at the bottom.

5. The fine filtering device for high viscosity glue as claimed in claim 4, characterized in that: The top of the storage tank is provided with a feed port, a nitrogen port and a vent port, and the vent port is provided with a pipeline leading to the bottom of the inner cavity of the storage tank.

6. The fine filtering device for high viscosity glue as claimed in claim 2, characterized in that: The filter screen is configured as a stainless steel filter screen plate.

7. The fine filtering device for high viscosity glue according to claim 6, characterized in that: The filter screen plate is bent or a plurality of the filter screen plates are spliced ​​to form a cylindrical or square filter screen bag, and a detachable mounting portion is formed during the molding process.

8. The fine filtering device for high viscosity glue according to claim 7, characterized in that: The filter mesh number of the filter screen plate or the filter screen bag is 250-320 meshes.

9. The fine filtering device for high viscosity glue according to claim 1, characterized in that: A pressure sensor is provided in the pull-plate filter, and the pressure sensor is suitable for monitoring the filtering pressure in the pull-plate filter; all the valves are electrically controlled valves, and the pressure sensor and the valves are electrically connected to the control system.

10. The fine filtering device for high viscosity glue according to claim 1, characterized in that: A condenser is arranged in the pipeline between the rotor pump and the pull plate filter. The condenser has a circulating liquid inlet located at the bottom and a circulating liquid outlet located at the top. The coolant circulates from bottom to top in the condenser.

Images