Circulating impurity removal device for cooling water of injection molding machine
By designing the flow and automatic sewage discharge structure above the water pipe in the cooling water circulation and decompression device of the injection molding machine, the filter net clogging caused by impurity adhesion is solved, and efficient impurity removal and stable equipment operation is achieved.
Patent Information
- Application Number
- CN202510672759.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2025-07-08
AI Technical Summary
In the existing injection molding machine cooling water circulation removal device, impurities are easily adhered to the surface of the filter screen, resulting in clogging of the filter screen, affecting the cooling effect and equipment operation efficiency.
The design of the outlet pipe is located above the inlet pipe, so that the cooling water flows from bottom to top, the impurities are sinked by gravity, and the driving rod is driven to rotate through the driving parts, and the elastic parts and chute structures are used to achieve automatic sewage discharge, combining backflushing and vibration to remove impurities to reduce blockage.
It reduces the risk of filter clogging, extends the filter life, improves the degree of automation of equipment operation and the continuity of filter cleaning, reduces the frequency of manual cleaning, and reduces equipment cost and energy consumption.
Smart Images
Figure CN120269768A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of injection molding machines, and in particular to a circulating impurity removal device for the cooling water of an injection molding machine. Background Art
[0002] In modern manufacturing, injection molding machines, as key equipment for plastic processing, are widely used in multiple fields such as automobiles, electronics, and medical devices. During the injection molding process, plastic raw materials need to go through two key stages: high-temperature melting and rapid cooling and shaping. To ensure the quality and production efficiency of injection molded products, strict requirements are imposed on the temperature control of injection molding machines. The cooling water circulation system, as the core component of the temperature control of injection molding machines, takes away a large amount of heat generated during the injection molding process through the circulating cooling water, maintaining the temperature stability of the equipment and molds. However, during long-term operation, impurities such as rust, scale, sediment, and plastic debris will inevitably mix into the cooling water. These impurities not only affect the cooling effect but may also cause wear and blockage to components such as water pumps and pipelines. Therefore, an efficient circulating impurity removal device for cooling water has become a necessary guarantee for the stable operation of injection molding machines. In the prior art, common circulating impurity removal devices for the cooling water of injection molding machines usually use a filter screen filtration method to achieve impurity separation. A filter chamber is set in the cooling water circulation loop, and a filter screen structure is installed in the chamber. When the cooling water flows into the filter chamber, larger particles of impurities are intercepted by the filter screen, and the filtered cooling water continues to participate in the circulation.
[0003] Regarding the above related technologies, the inventor believes that due to the fact that impurities are easily tightly adhered to the surface of the filter screen under the impact of water flow, especially some dirt or fine particles with strong viscosity, as the use time increases, the problem of filter screen blockage becomes increasingly serious, resulting in an increase in the flow resistance of the cooling water, a decrease in the circulation efficiency, and even possible overheating failures of the equipment, which greatly affects the normal operation and production efficiency of injection molding machines. Summary of the Invention
[0004] The purpose of this application is to provide a circulating impurity removal device for the cooling water of an injection molding machine to improve the problem that impurities are easily tightly adhered to the surface of the filter screen under the impact of water flow, which affects the normal operation and production efficiency of the injection molding machine as the use time increases.
[0005] A circulating impurity removal device for the cooling water of an injection molding machine provided by this application adopts the following technical solutions: A circulating impurity removal device for the cooling water of an injection molding machine, including a filtration tank. The outer side wall of the filtration tank is connected to its interior and is provided with a water inlet pipe and a water outlet pipe. The water outlet pipe is located above the water inlet pipe. Inside the filtration tank, a fixed plate is arranged between the water outlet pipe and the water inlet pipe. A plurality of through grooves penetrating in the vertical direction are arranged around the fixed plate, and a filter screen is arranged inside the fixed plate. A driving member is arranged on the top surface of the filtration tank, and a driving rod is arranged at the output end of the driving member. The driving rod penetrates the fixed plate, and a rotating cavity is arranged at the end of the driving rod away from the driving member. A telescopic pipe is arranged on the top surface of the rotating cavity, and one end of the telescopic pipe away from the rotating cavity is provided with a pressing plate that can abut against the bottom surface of the fixed plate. A plurality of elastic members are arranged on the top surface of the rotating cavity, and one end of the elastic member away from the rotating cavity is fixedly connected to the pressing plate. A fitting frame that can fit with the inner side wall of the through groove is arranged on the top surface of the pressing plate. On the bottom surface of the fixed plate, a plurality of arc-shaped plates are arranged at intervals with the center of the fixed plate as the center of the circle on both sides of the through groove. The interval between the arc-shaped plates corresponds to the through groove, and inclined grooves are arranged on both sides of the arc-shaped plates. On both sides of the pressing plate, inclined plane guide plates are arranged on the circumferential track of the arc-shaped plates. A sewage discharge pipe is rotatably arranged at the axis position of the driving rod on the bottom surface of the rotating cavity. The rotating cavity is a hollow structure and is communicated with the telescopic pipe and the sewage discharge pipe. The end of the sewage discharge pipe away from the rotating cavity penetrates the filtration tank, and a sewage discharge valve is arranged at the end of the sewage discharge pipe away from the rotating cavity.
[0006] By adopting the above technical solution, the water outlet pipe is located above the water inlet pipe, so that the cooling water flows upward in the filtration tank. Utilizing the gravity effect, the impurities naturally sink, reducing the direct impact of the impurities on the filter screen, reducing the risk of the filter screen being blocked, and prolonging its service life. The driving member drives the driving rod to rotate, and then the rotating cavity rotates. During the rotation of the rotating cavity, the pressing plate on its top surface, under the elastic force of the spring, gradually approaches the bottom surface of the fixed plate along the inclined groove of the arc-shaped plate as it rotates. When the pressing plate abuts against the lower plate, the fitting frame is engaged and fixed with the inner wall of the through groove. The sewage discharge valve is opened, and the cooling water enters the telescopic pipe from above, backwashing the filter screen, and taking the impurities adhered to the bottom surface of the filter screen out of the filtration tank along the sewage discharge pipe, realizing the sewage discharge operation. The pressing plate moves along the inclined groove of the arc-shaped plate under the action of the elastic member, reducing the problem of the filter screen being blocked, eliminating the need for frequent manual cleaning, and improving the automation degree of the equipment operation and the continuity of the filter screen cleaning.
[0007] Optionally, the fixed plate includes an upper plate and a lower plate. The filter screen is located between the upper plate and the lower plate and is in contact with them. The center of the filter screen is rotatably connected to the driving rod to scrape off the impurities adhered to the bottom surface of the filter screen. The rotating direction of the filter screen is opposite to the rotating direction of the rotating cavity.
[0008] By adopting the above technical solution, when the driving rod rotates in the reverse direction, the filter screen rotates, and the lower plate can scrape off the impurities adhered to the bottom surface of the filter screen, clearing the impurities on the filter screen as a whole and alleviating the problem of the filter screen being blocked.
[0009] Optionally, the sewage discharge pipe includes a main pipe rotatably connected to the rotating cavity and an insertion pipe inserted into the main pipe. The insertion pipe penetrates through the filter tank, and the sewage discharge valve is located on the insertion pipe.
[0010] By adopting the above technical solution, the sewage discharge pipe adopts the way of inserting the main pipe and the insertion pipe, which is convenient for disassembly, installation and cleaning of the sewage discharge pipe. At the same time, when the equipment is maintained and cleaned, the insertion pipe can be removed from the main pipe, so that the impurities deposited in the filter tank flow out with the cooling water, which helps to clean the impurities in the filter pipe, reduce the accumulation of impurities in the filter tank and reduce the impact on the filtering effect, and improve the maintainability of the equipment.
[0011] Optionally, a fixed pipe orifice is provided at the bottom surface of the filter tank, and a screw cap is provided at one end of the insertion pipe away from the main pipe. The inner side wall of the screw cap is threadedly connected to the outer side wall of the fixed pipe orifice.
[0012] By adopting the above technical solution, the screw cap and the fixed pipe orifice are threadedly connected, which ensures the stability of the sewage discharge pipe during the operation of the equipment and helps the sewage discharge process to be safe and stable. At the same time, the threaded connection does not affect the quick disassembly and installation of the sewage discharge pipe.
[0013] Optionally, sealing rings are provided at one end of the insertion pipe located inside the main pipe and at one end located inside the fixed pipe orifice.
[0014] By adopting the above technical solution, the sealing ring helps to prevent the leakage of cooling water and backwashing sewage, reduces the possibility of the surrounding environment of the equipment being damp due to leakage, affecting the normal operation of the equipment and the sewage polluting the working environment, and ensures the safety and environmental protection of the equipment operation. At the same time, good sealing helps to maintain the pressure stability in the pipeline during the sewage discharge process, ensures that the backwashing water flow can impact the filter screen with sufficient pressure, and guarantees the sewage discharge effect.
[0015] Optionally, the lower plate is provided with an inclined surface shovel plate that fits the bottom surface of the filter screen. The inclined surface of the inclined surface shovel plate is opposite to the rotating direction of the filter screen to facilitate the peeling off of impurities.
[0016] By adopting the above technical solution, when the filter screen rotates, the inclined surface shovel plate can effectively peel off the impurities adhering to the bottom surface of the filter screen by using its inclined angle. Especially for the dirt with strong viscosity, through the mechanical scraping method, it helps to solve the problem that it is difficult to remove the viscous impurities by traditional filter screen backwashing, helps to improve the cleaning effect of the filter screen, and guarantees the filtering effect.
[0017] Optionally, a plurality of annular plates are arranged at intervals with the center of the filter screen as the center of the circle on the bottom surface of the filter screen, and the lower plate and the inclined surface shovel plate are provided with annular grooves that fit the surface of the annular plates.
[0018] By adopting the above technical solution, the annular plate increases the adsorption area of the filter screen for impurities, enhances the interception effect of the filter screen. At the same time, the annular plate cooperates with the annular grooves of the lower plate and the inclined surface shovel plate, increasing the scraping area and contact tightness. During the rotation of the filter screen, the fitting of the annular plate and the annular groove can more effectively scrape off impurities, reducing the residue of impurities at the edge of the filter screen and further improving the impurity removal effect.
[0019] Optionally, the upper plate includes a central plate and an annular plate fixed to the inner wall of the filter tank. The annular plate is provided with a plurality of connecting rods fixed to the central plate; a plurality of flapper plates are spaced on the outer wall of the central plate, and the flapper plates are rotatably connected to the outer wall of the central plate. The flapper plates are located between adjacent through grooves. The driving rod is provided with a section of reciprocating thread, and a sleeve is threadedly connected to the driving rod at the reciprocating thread. A plurality of transmission rods are rotatably connected to the outer wall of the sleeve, and the end of the transmission rod away from the sleeve is rotatably connected to the flapper plate to control the flapper plate to repeatedly strike the filter screen.
[0020] By adopting the above technical solution, the reciprocating thread of the driving rod drives the sleeve to perform a reciprocating linear motion, and the flapper plate repeatedly strikes the filter screen through the transmission rod. Using the vibration principle, the fine particles stubbornly attached to the filter screen are shaken off, combined with the scraping action of the inclined surface shovel plate, forming a multi-dimensional screen cleaning method, which helps to solve the problem of fine particle blockage of the filter screen; at the same time, the vibration function of the flapper plate can be realized by the rotation of the same driving part and the driving rod, without additional power sources and complex structures, making the whole device structure compact, reducing equipment costs and energy consumption.
[0021] Optionally, the height of the mounting frame is the same as the height of the arc plate.
[0022] By adopting the above technical solution, when the abutting plate moves to abut against the bottom surface of the fixed plate, the mounting frame can be closely attached to the inner wall of the through groove, forming a complete sealed sewage discharge channel, reducing the leakage of water flow from the gap during the backwashing process, ensuring that the backwashing water flow all acts on the filter screen, and improving the sewage discharge efficiency; at the same time, during the rotation of the rotating cavity, the abutting plate abuts against the arc plate, and the mounting frame abuts against the bottom surface of the lower plate, which helps to prevent cooling water from entering the telescopic pipe.
[0023] Optionally, the water inlet of the water inlet pipe is inclined downward.
[0024] By adopting the above technical solution, the water inlet of the water inlet pipe is inclined downward, changing the direction of the cooling water entering the filter tank, reducing the direct impact of the cooling water on the telescopic pipe, preventing the telescopic pipe from being damaged due to long-term water flow impact, and extending its service life; at the same time, improving the stability of the telescopic pipe during sewage discharge.
[0025] In summary, the present application includes at least one of the following beneficial technical effects of the circulating impurity removal device for the cooling water of the injection molding machine: 1. The outlet pipe is located above the inlet pipe, causing the cooling water to flow upward in the filtration tank. Utilizing the force of gravity, impurities naturally sink, reducing the direct impact of impurities on the filter screen, lowering the risk of filter screen blockage, and extending its service life. The driving member drives the driving rod to rotate, thereby causing the rotating cavity to rotate. During the rotation of the rotating cavity, the abutting plate on its top surface moves gradually closer to the bottom surface of the fixed plate along the inclined groove of the arc-shaped plate under the elastic force of the spring. When the abutting plate abuts against the lower plate, the mounting frame is clamped and fixed with the inner wall of the through groove. The sewage discharge valve is opened, and the cooling water enters the telescopic pipe from above, backwashing the filter screen, and carrying the impurities adhered to the bottom surface of the filter screen out of the filtration tank through the sewage discharge pipe, realizing the sewage discharge operation. The abutting plate moves along the inclined groove of the arc-shaped plate under the action of the elastic member, reducing the problem of filter screen blockage, eliminating the need for frequent manual cleaning, improving the automation degree of equipment operation and the continuity of filter screen cleaning; 2. The sewage discharge pipe adopts a plug-in connection method between the main pipe and the inserted pipe, facilitating the disassembly, installation, and cleaning of the sewage discharge pipe. At the same time, during equipment maintenance and cleaning, the inserted pipe can be removed from the main pipe, enabling the impurities deposited in the filtration tank to flow out with the cooling water, helping to clean the impurities in the filter pipe, reducing the accumulation of impurities in the filtration tank to reduce the impact on the filtration effect, and improving the maintainability of the equipment; 3. The reciprocating thread of the driving rod drives the sleeve to perform reciprocating linear motion. Through the transmission rod, the flapper repeatedly strikes the filter screen. Using the vibration principle, the fine particles stubbornly adhering to the filter screen are shaken off, combined with the scraping action of the inclined plane scraper plate, forming a multi-dimensional filter screen cleaning method, which helps to solve the problem of fine particle blockage of the filter screen. At the same time, the vibration function of the flapper can be achieved by the rotation of the same driving member and the driving rod, without the need for an additional power source and complex structure, making the entire device structure compact, reducing equipment costs and energy consumption. Description of the Drawings
[0026] Figure 1 is the overall structural schematic diagram of the circulating impurity removal device for the cooling water of the injection molding machine; Figure 2 is the overall structural cross-sectional schematic diagram of the circulating impurity removal device for the cooling water of the injection molding machine; Figure 3 is Figure 2 the enlarged schematic diagram of the structure at A in Figure 4 is the schematic diagram for embodying the structure of the inclined plane scraper plate in the embodiment; Figure 5 is the schematic diagram for embodying the structure of the rotating cavity in the embodiment; Figure 6 is the cross-sectional schematic diagram for embodying the structure of the sewage discharge pipe in the embodiment.
[0027] In the figure, 1 is a filter tank; 11 is a water inlet pipe; 12 is a water outlet pipe; 13 is a fixed nozzle; 2 is a fixing plate; 21 is an upper plate; 211 is a central plate; 212 is an annular plate; 213 is a connecting rod; 22 is a lower plate; 221 is an inclined shovel plate; 222 is an annular groove; 23 is a through groove; 24 is an arc plate; 241 is an inclined groove; 3 is a filter screen; 31 is an annular plate; 4 is a driving member; 41 is a driving rod; 411 is a reciprocating thread; 5 is a rotating cavity; 51 is a telescopic pipe; 511 is a pressing plate; 512 is an inclined guide plate; 52 is an elastic member; 53 is a pasting frame; 6 is a sewage discharge pipe; 61 is a main pipe; 62 is an insertion pipe; 621 is a screw cap; 622 is a sealing ring; 63 is a sewage discharge valve; 7 is a clapper board; 71 is a sleeve; 72 is a transmission rod. Detailed implementation mode
[0028] The following is a further detailed description of the present application in conjunction with the attached Figure 1 - attached Figure 6 drawings.
[0029] A circulating impurity removal device for the cooling water of an injection molding machine, referring to Figure 1 the figure, includes a filter tank 1. The filter tank 1 is a cylindrical container made of a metal material such as stainless steel, which is used to hold the cooling water and filter impurities. The outer wall of the filter tank 1 is connected to its interior by welding, and a water inlet pipe 11 and a water outlet pipe 12 are provided; the filter tank 1 is connected to the circulating loop of the cooling water of the injection molding machine through the water inlet pipe 11 and the water outlet pipe 12; the water outlet pipe 12 is located above the water inlet pipe 11 to facilitate the precipitation and filtration of impurities. The water inlet of the water inlet pipe 11 is inclined downward, and the inclination angle can be specifically 30°. The purpose is to guide the cooling water to enter the filter tank 1 at a certain angle. Referring to Figure 2 the figure, a fixing plate 2 is arranged between the water outlet pipe 12 and the water inlet pipe 11 in the filter tank 1. The fixing plate 2 includes an upper plate 21 and a lower plate 22, and both the upper plate 21 and the lower plate 22 are made of stainless steel. A filter screen 3 is arranged inside the fixing plate 2. The filter screen 3 is a disc-shaped structure made of a metal wire mesh material, located between the upper plate 21 and the lower plate 22 and is attached to the upper plate 21 and the lower plate 22 through a clamping groove. The setting of the clamping groove can ensure the stable installation of the filter screen 3. A plurality of through grooves 23 penetrating in the up and down direction are arranged on the circumference of the fixing plate 2. In this embodiment, it is preferably five and evenly spaced. Part of the filter screen 3 in the through grooves 23 filters the impurities in the cooling water. Referring to Figure 1 and Figure 2, a driving member 4 is provided on the top surface of the filter tank 1 by means of bolt fixation. The driving member 4 is a rotating motor configured with a reducer and is used to provide power. The output end of the driving member 4 is fixedly connected to a driving rod 41 through a coupling. The driving rod 41 penetrates through the fixing plate 2. Specifically, a through hole adapted to the driving rod 41 is opened on the fixing plate 2. The driving rod 41 passes through the through hole and a sealing bearing is provided between the driving rod 41 and the fixing plate 2 to ensure the sealing performance and stability when the driving rod 41 rotates. The center of the filter net 3 is rotatably connected to the driving rod 41 through a one-way bearing. The one-way bearing enables the filter net 3 to freely rotate relative to the driving rod 41 only in one direction. When the driving rod 41 rotates, the impurities adhered to the bottom surface of the filter net 3 are scraped off.
[0030] Refer to Figure 2 , Figure 3 , the upper plate 21 includes a central plate 211 and an annular plate 212 fixedly connected to the inner side wall of the filter tank 1 by welding. The annular plate 212 is provided with a plurality of connecting rods 213 fixedly connected to the central plate 211 by welding. In this embodiment, it is preferably five, and the specific number is not required. A plurality of flapper plates 7 are arranged at intervals on the outer side wall of the central plate 211 by means of rotational connection through a rotating shaft, and all are made of stainless steel. The flapper plates 7 are located between adjacent through slots 23. A section of reciprocating thread 411 is provided on the driving rod 41. A sleeve 71 is connected to the driving rod 41 at the position of the reciprocating thread 411 by means of threaded connection. A plurality of transmission rods 72 are rotatably connected to the outer side wall of the sleeve 71 through pins, and all are made of stainless steel. One end of the transmission rod 72 away from the sleeve 71 is rotatably connected to the flapper plate 7 through a pin to control the flapper plate 7 to repeatedly strike the filter net 3, which helps to shake off the impurities adhered to the filter net 3. When the driving rod 41 rotates, the sleeve 71 makes a reciprocating linear motion under the action of the reciprocating thread 411, and drives the flapper plate 7 to swing back and forth through the transmission rod 72, realizing the striking of the filter net 3.
[0031] Refer to Figure 4 , the lower plate 22 is provided with an inclined plane shovel plate 221 that fits the bottom surface of the filter net 3 by welding. The inclined plane shovel plate 221 is made of wear-resistant metal material, and its inclined surface is opposite to the rotation direction of the filter net 3 to facilitate the peeling off of impurities. When the filter net 3 rotates, the inclined plane shovel plate 221 can shovel off the impurities adhered to the filter net 3. Refer to Figure 4 , a plurality of annular plates 31 are arranged at intervals on the bottom surface of the filter net 3 by welding with the center of the filter net 3 as the center of the circle. The specific number is not limited, and it is required not to cover the mesh holes of the filter net 3. The lower plate 22 and the inclined plane shovel plate 221 are provided with annular grooves 222 that fit the surface of the annular plates 31 through machining. The cooperation between the annular plates 31 and the annular grooves 222 can further limit the radial movement of the filter net 3.
[0032] Refer to Figure 4, a rotating cavity 5 is connected to one end of the driving rod 41 away from the driving member 4 through a one-way bearing. The rotating direction of the filter screen 3 is opposite to that of the rotating cavity 5. For easy understanding, two one-way bearings in different directions are respectively controlled by the same driving member 4 to rotate the filter screen 3 and the rotating cavity 5, that is, when the filter screen 3 rotates, the rotating cavity 5 does not move, and when the rotating cavity 5 rotates, the filter plate does not move. The rotating cavity 5 is made of metal and is rotatably connected to the driving rod 41 through a one-way bearing. Refer to Figure 4 , Figure 5 , a telescopic tube 51 is arranged on the top surface of the rotating cavity 5 by means of bolt fixation. The telescopic tube 51 can be made of a corrugated pipe and can be telescoped and deformed within a certain range. One end of the telescopic tube 51 away from the rotating cavity 5 is provided with a pressing plate 511 that can abut against the bottom surface of the fixing plate 2 by means of flange connection. A plurality of elastic members 52 are arranged on the top surface of the rotating cavity 5 by means of welding. In this embodiment, the elastic members 52 are preferably springs and the number is two. One end of the elastic member 52 away from the rotating cavity 5 is fixedly connected to the pressing plate 511 by welding; a fitting frame 53 that can be attached to the inner side wall of the through groove 23 is arranged on the top surface of the pressing plate 511 by means of welding.
[0033] Refer to Figure 4 , Figure 5 , on the bottom surface of the fixing plate 2, a plurality of arc-shaped plates 24 are integrally arranged at intervals with the center of the fixing plate 2 as the center on both sides of the through groove 23. In this embodiment, the number is preferably two, and the height of the fitting frame 53 is the same as that of the arc-shaped plates 24; the interval between the arc-shaped plates 24 corresponds to the through groove 23, and inclined grooves 241 are arranged on both sides of the arc-shaped plates 24. On both sides of the pressing plate 511, inclined surface guide plates 512 are integrally arranged on the circumferential track of the arc-shaped plates 24. The cooperation between the inclined surface guide plates 512 and the inclined grooves 241 can guide the pressing plate 511 to accurately enter the through groove 23.
[0034] Refer to Figure 5 , Figure 6 , on the bottom surface of the rotating cavity 5 at the axis position of the driving rod 41, a sewage discharge pipe 6 is rotatably connected through a rotary joint. The sewage discharge pipe 6 includes a main pipe 61 rotatably connected to the rotating cavity 5 and an insertion pipe 62 connected to the main pipe 61 by means of insertion. The rotating cavity 5 is a hollow structure and is communicated with the telescopic tube 51 and the sewage discharge pipe 6 through an internal channel. One end of the sewage discharge pipe 6 away from the rotating cavity 5 penetrates through the filter tank 1. Specifically, the insertion pipe 62 penetrates through the filter tank 1, and a sewage discharge valve 63 is arranged at one end of the sewage discharge pipe 6 away from the rotating cavity 5; that is, the sewage discharge valve 63 is located on the insertion pipe 62, and the sewage discharge valve 63 is an electromagnetic valve. When the rotating cavity 5 rotates and the fitting frame 53 is engaged and fixed with the inner wall of the through groove 23, the sewage discharge valve 63 is opened, and the cooling water enters the telescopic tube 51 from above, backwashes the filter screen 3, and takes the impurities and flows out of the filter tank 1 along the sewage discharge pipe 6.
[0035] Refer to Figure 6, a fixed pipe orifice 13 is provided at the bottom surface of the filter tank 1 by welding. A screw cap 621 is provided at one end of the insertion pipe 62 away from the main pipe 61. The inner side wall of the screw cap 621 is threadedly connected to the outer side wall of the fixed pipe orifice 13, which facilitates the installation and disassembly of the insertion pipe 62; sealing rings 622 are provided at one end of the insertion pipe 62 located inside the main pipe 61 and at one end located inside the fixed pipe orifice 13. The sealing rings 622 are made of rubber and are fixed to the outer side wall of the insertion pipe 62 through waterproof adhesive; to ensure the sealing performance of the connection part of the sewage discharge pipe 6. A sewage tank (not shown in the figure) is placed below the sewage discharge pipe 6 for storing the discharged sewage.
[0036] The implementation principle of the embodiment of this application is as follows: During actual use, the cooling water of the injection molding machine flows into the filter tank 1 through the water inlet pipe 11 at a downward inclination angle. Since the water outlet pipe 12 is located above the water inlet pipe 11, the cooling water will flow upward in the filter tank 1. During this process, impurities will be intercepted by the filter net 3 located inside the fixing plate 2. Start the driving member 4, and the driving rod 41 starts to rotate. Since the rotating cavity 5 is connected to the driving rod 41 through a one-way bearing, the rotating cavity 5 starts to rotate. During the rotation of the rotating cavity 5, the abutting plate 511 on its top surface, under the elastic force of the spring, gradually approaches the bottom surface of the fixing plate 2 along the inclined groove 241 of the arc-shaped plate 24 as it rotates; when the abutting plate 511 abuts against the lower plate 22, the attaching frame 53 is engaged and fixed with the inner wall of the through groove 23, and the sewage discharge valve 63 is opened. At this time, the cooling water enters the telescopic pipe 51 from above, backwashes the filter net 3, and takes the impurities adhered to the bottom surface of the filter net 3 out of the filter tank 1 along the sewage discharge pipe 6, realizing the sewage discharge operation; after the sewage discharge is completed, close the sewage discharge valve 63, and manually select to control the rotating cavity 5 to continue rotating, and the attaching frame 53 moves to the next through groove 23 for filtering and impurity removal work.
[0037] When it is necessary to clean the impurities in the filter net 3 and the filter tank 1 as a whole, the driving member 4 rotates in the reverse direction. Since the center of the filter net 3 is rotationally connected to the driving rod 41 through a one-way bearing, and the inclined surface of the inclined shovel plate 221 of the lower plate 22 is opposite to the rotation direction of the filter net 3, when the driving rod 41 rotates in the reverse direction, it will drive the filter net 3 to rotate, and the inclined shovel plate 221 can continuously peel off the impurities adhered to the filter net 3. At the same time, the reciprocating thread 411 on the driving rod 41 makes the sleeve 71 perform a reciprocating linear motion, and drives the clapper 7 to repeatedly strike the filter net 3 through the transmission rod 72, further shaking off the impurities on the filter net 3; and by disassembling the insertion pipe 62, the cooling water can carry all the impurities out from the fixed pipe orifice 13; which helps to clean the impurities on the filter net 3, ensure the cleanliness of the cooling water of the injection molding machine, and maintain the normal operation and production efficiency of the injection molding machine.
[0038] The embodiments of the specific implementation manners are all preferred embodiments of the present application, which do not limit the protection scope of the present application. Identical components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. A circulating impurity removal device for the cooling water of an injection molding machine, comprising a filter tank (1), characterized in that: A water inlet pipe (11) and a water outlet pipe (12) are connected to the outer wall of the filter tank (1) and communicate with its interior. The water outlet pipe (12) is located above the water inlet pipe (11). A fixing plate (2) is arranged between the water outlet pipe (12) and the water inlet pipe (11) inside the filter tank (1). A plurality of through grooves (23) penetrating in the vertical direction are arranged around the circumference of the fixing plate (2). A filter screen (3) is arranged inside the fixing plate (2). A driving member (4) is arranged on the top surface of the filter tank (1). A driving rod (41) is arranged at the output end of the driving member (4). The driving rod (41) penetrates through the fixing plate (2). A rotating cavity (5) is arranged at one end of the driving rod (41) away from the driving member (4). A telescopic pipe (51) is arranged on the top surface of the rotating cavity (5). One end of the telescopic pipe (51) away from the rotating cavity (5) is provided with a pressing plate (511) that can abut against the bottom surface of the fixing plate (2). A plurality of elastic members (52) are arranged on the top surface of the rotating cavity (5). One end of the elastic member (52) away from the rotating cavity (5) is fixedly connected to the pressing plate (511). A fitting frame (53) that can be attached to the inner side wall of the through groove (23) is arranged on the top surface of the pressing plate (511). On both sides of the through groove (23) at the bottom surface of the fixing plate (2), a plurality of arc-shaped plates (24) are arranged at intervals with the center of the fixing plate (2) as the center of the circle. The interval between the arc-shaped plates (24) corresponds to the through groove (23). Oblique grooves (241) are arranged on both sides of the arc-shaped plate (24). On both sides of the pressing plate (511), inclined surface guide plates (512) are arranged on the circumferential track of the arc-shaped plate (24). A sewage discharge pipe (6) is rotatably arranged at the axis position of the driving rod (41) on the bottom surface of the rotating cavity (5). The rotating cavity (5) is a hollow structure and is communicated with the telescopic pipe (51) and the sewage discharge pipe (6). One end of the sewage discharge pipe (6) away from the rotating cavity (5) penetrates through the filter tank (1). A sewage discharge valve (63) is arranged at one end of the sewage discharge pipe (6) away from the rotating cavity (5).
2. The circulating impurity removal device for the cooling water of an injection molding machine according to claim 1, characterized in that: The fixing plate (2) includes an upper plate (21) and a lower plate (22). The filter screen (3) is located between the upper plate (21) and the lower plate (22) and is attached to them. The center of the filter screen (3) is rotatably connected to the driving rod (41) to scrape off the impurities adhered to the bottom surface of the filter screen (3). The rotating direction of the filter screen (3) is opposite to the rotating direction of the rotating cavity (5).
3. The circulating impurity removal device for the cooling water of an injection molding machine according to claim 2, characterized in that: The sewage discharge pipe (6) includes a main pipe (61) rotatably connected to the rotating cavity (5) and an insertion pipe (62) inserted into the main pipe (61). The insertion pipe (62) penetrates through the filter tank (1). The sewage discharge valve (63) is located on the insertion pipe (62).
4. The circulating impurity removal device for the cooling water of an injection molding machine according to claim 3, characterized in that: A fixed pipe orifice (13) is arranged on the bottom surface of the filter tank (1). A screw cap (621) is arranged at one end of the insertion pipe (62) away from the main pipe (61). The inner side wall of the screw cap (621) is threadedly connected to the outer side wall of the fixed pipe orifice (13).
5. The circulating impurity removal device for the cooling water of an injection molding machine according to claim 4, characterized in that: Sealing rings (622) are arranged at one end of the insertion pipe (62) located inside the main pipe (61) and at one end located inside the fixed pipe orifice (13).
6. The circulating impurity removal device for the cooling water of an injection molding machine according to claim 2, wherein: The lower plate (22) is provided with an inclined shovel plate (221) that fits the bottom surface of the filter screen (3). The inclined surface of the inclined shovel plate (221) is opposite to the rotation direction of the filter screen (3) to facilitate the peeling off of impurities.
7. The circulating impurity removal device for the cooling water of an injection molding machine according to claim 6, characterized in that: A number of annular plates (31) are arranged at intervals with the center of the filter screen (3) as the center on the bottom surface of the filter screen (3). The lower plate (22) and the inclined shovel plate (221) are provided with annular grooves (222) that fit the surfaces of the annular plates (31) corresponding to the annular plates (31).
8. The circulating impurity removal device for the cooling water of an injection molding machine according to claim 2, wherein: The upper plate (21) includes a central plate (211) and an annular plate (212) fixed to the inner wall of the filter tank (1). The annular plate (212) is provided with a number of connecting rods (213) fixed to the central plate (211); a number of flapper plates (7) are arranged at intervals on the outer side wall of the central plate (211). The flapper plates (7) are rotatably connected to the outer side wall of the central plate (211). The flapper plates (7) are located between adjacent through grooves (23). The driving rod (41) is provided with a section of reciprocating thread (411). A sleeve (71) is threadedly connected to the driving rod (41) at the reciprocating thread (411). A number of transmission rods (72) are rotatably connected to the outer side wall of the sleeve (71). The end of the transmission rod (72) far from the sleeve (71) is rotatably connected to the flapper plate (7) to control the flapper plate (7) to repeatedly strike the filter screen (3).
9. The circulating impurity removal device for the cooling water of an injection molding machine according to claim 1, characterized in that: The height of the frame sticker (53) is the same as the height of the arc plate (24).
10. The circulating impurity removal device for the cooling water of an injection molding machine according to claim 1, characterized in that: The water inlet of the water inlet pipe (11) is inclined downward.