Circulating impurity removal device for cooling water of injection molding machine

Abstract

The invention relates to the technical field of cooling water impurity removal, in particular to a circulating impurity removal device for cooling water of an injection molding machine. Comprising a shell, a circulating water tank is installed in the shell, the circulating water tank is fixedly connected with a fixing shell, and the circulating water tank is fixedly connected and communicated with a water inlet pipe and a water outlet pipe; the settling tank is fixedly connected in the fixed shell, and the upper side of the settling tank is fixedly connected with a filter shell; the motor is fixedly connected to the filter shell, and an output shaft of the motor is fixedly connected with a rotating shaft; and the fixed frame is fixedly connected to the rotating shaft, and a high-density filter screen is fixedly connected into the fixed frame. The multiple fixing frames and the high-density filter screen which are evenly distributed in the circumferential direction work in sequence, after a certain number of impurities adhere to the high-density filter screen in the working state, the high-density filter screen is automatically replaced, then it is guaranteed that circulating water flows smoothly in the filtering period, and the filtering efficiency is improved. And therefore, the impurities can be smoothly flushed out in the circulating flowing process of the circulating water.

Description

Technical Field

[0001] The invention relates to the technical field of cooling water impurity removal, and in particular to a circulating impurity removal device for cooling water of an injection molding machine. Background Art

[0002] During the use of injection molding machines, a large amount of circulating cooling water is usually required. When the circulating water is used for a long time, a certain amount of impurities will be generated as the use time increases. These impurities include solid impurities formed by the condensation of metal ions inside the circulating water, colloidal impurities formed by the combination of metal ions in the circulating water and chemical substances in the water, and muddy impurities generated by the metabolism of microorganisms and algae that reproduce in the circulating water system. When impurities are newly generated, they will first adhere to the pipe wall. As the impurities increase, some impurities will gradually fall off the pipe wall and flow with the circulating water system to the smaller pores to accumulate, resulting in poor water flow in the circulating water system. In severe cases, it will cause the circulating water system to be blocked. In the existing circulating water system, there will be The impurities attached to the pipe wall are cleaned regularly by various means, including chemical means, electromagnetic means, etc. After the impurities are cleaned from the pipe wall, the circulating water needs to be kept running, and then the various impurities are filtered out uniformly through the filter during the running of the circulating water. When using the filter to filter the clay impurities in the circulating water, a finer filter is usually required, and the clay impurities are easy to stick to the filter and cause partial blockage of the filter. If the filter is not replaced in time, the flow rate of the circulating water will always be weakened by the blocked filter, affecting the smoothness of the circulating water flow, and then affecting the cooling performance of the circulating water on the injection molding machine, causing the circulating water to be unable to smoothly bring out the impurities that fall off in the circulating water system at a faster flow rate. Summary of the invention

[0003] In order to overcome the disadvantages of the existing device that when using a filter screen to filter out clay impurities, the clay impurities are easily adhered to the filter screen, causing the filter screen to be blocked and affecting the smoothness of the circulating water during the filtration period, the present invention provides a circulating impurity removal device for cooling water of an injection molding machine.

[0004] The technical solution of the present invention is: a circulating impurity removal device for cooling water of an injection molding machine, comprising: an outer shell, a circulating water tank is installed in the outer shell, the circulating water tank is fixedly connected to a fixed shell, the circulating water tank is fixedly connected and connected to a water inlet pipe and a water outlet pipe; a sedimentation box is fixedly connected to the fixed shell, a filter shell is fixedly connected to the upper side of the sedimentation box, the filter shell is fixedly connected and connected to a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are both connected to the water inlet pipe, and a pressure sensor is arranged in the water inlet pipe; a motor is fixedly connected to the filter shell, the output shaft of the motor is fixedly connected to a rotating shaft, and the rotating shaft is located in the filter shell; a fixed frame has a plurality of circumferentially uniformly distributed ones, which are fixedly connected to the rotating shaft, the fixed frame is fitted with the filter shell, a high-density filter screen is fixedly connected in the fixed frame, and a connecting line between the connecting point of the water inlet pipe and the filter shell and the connecting point of the water outlet pipe and the filter shell does not intersect with the axis of the rotating shaft.

[0005] It is particularly preferred that there are at least four fixing frames, and there is at least one fixing frame between the connection point between the water inlet pipe and the filter shell and the connection point between the water outlet pipe and the filter shell.

[0006] It is particularly preferred that the high-density filter net is made of a flexible material so that the high-density filter net forms a depression when impacted by water flow.

[0007] It is particularly preferred that it also includes: a recoil pipe, fixedly connected to and connected to the sedimentation box, the recoil pipe is connected to the filter shell, and the connecting points are a water inlet and a water outlet, a pumping element is arranged in the recoil pipe, the pumping element is used to pump the water in the sedimentation box into the filter shell, the water inlet is used to guide the water flow therein to impact the high-density filter net; a blocking mechanism, which has a plurality of circumferentially evenly distributed ones, respectively used to control whether the high-density filter net in the adjacent fixed frame is working, and is arranged in the adjacent fixed frame.

[0008] It is particularly preferred that the angle between the water inlet axis and the water outlet axis is less than or equal to 90°, and the water inlet axis faces the axis of the rotating shaft, so as to cause the water flowing out of the water inlet to directly impact the rotating shaft.

[0009] It is particularly preferred that the blocking mechanism includes: a rotating plate, which has a plurality of evenly distributed plates, which are rotatably connected in adjacent fixed frames, and two adjacent rotating plates are sealed and matched with each other, and the fixed frame is fixedly connected with symmetrically distributed fixed plates, and the fixed plate and the adjacent rotating plates are sealed and matched with each other; a moving column, which is sealingly and slidably connected in the fixed frame, and the moving column is rotatably connected with evenly distributed connecting rotating rods, and the connecting rotating rod is rotatably connected with the adjacent rotating plates; a sealing shell, which is fixedly connected to the fixed frame, and the moving column is slidably connected to the sealing shell, and a spring is fixedly connected therebetween; a trigger assembly, which is used to squeeze the adjacent moving columns to move, and the trigger assembly is arranged in the filter shell.

[0010] It is particularly preferred that the backwash pipe is fixedly connected to and connected with an auxiliary pipe on one side close to the water inlet, the auxiliary pipe is connected to the filter shell, and the connection between the two is located on the side of the water outlet away from the water inlet, and the auxiliary pipe is used to assist the water inlet in flushing the adjacent high-density filter screen.

[0011] It is particularly preferred that the cross-sectional area of ​​the auxiliary pipe is smaller than the cross-sectional area of ​​the backflushing pipe, and the connection between the auxiliary pipe and the filter housing is elliptical.

[0012] It is particularly preferred that the trigger assembly includes: a first extrusion arc, fixedly connected in the filter shell, the first extrusion arc is located between the water inlet pipe and the water outlet pipe, the first extrusion arc is sealingly extruded and matched with the adjacent movable column, and the first extrusion arc is sealingly matched with the adjacent fixed frame; a second extrusion arc, fixedly connected in the filter shell, the second extrusion arc is located between the water inlet and the water outlet, the second extrusion arc is extruded and matched with the adjacent movable column, and the second extrusion arc is sealingly matched with the adjacent fixed frame; a third extrusion arc, fixedly connected to a side of the filter shell close to the auxiliary pipe, the arc length of the third extrusion arc being greater than the arc length of the connection point between the auxiliary pipe and the filter shell.

[0013] It is particularly preferred that the distances between the second extrusion arc and the third extrusion arc and the first extrusion arc are greater than the distance between the farthest points of two adjacent fixing frames.

[0014] Beneficial effects of the present invention: The present invention enables a plurality of circumferentially evenly distributed fixed frames and high-density filter nets to work in sequence. After a certain amount of impurities are adhered to the high-density filter net in the working state, the high-density filter net is automatically replaced, thereby ensuring smooth flow of circulating water during filtration, thereby ensuring that the circulating water can smoothly flush out impurities during the circulating flow process.

[0015] The present invention cleans adjacent high-density filter screens through a backflushing pipe and adjacent components, thereby ensuring the recycling performance of the high-density filter screens, reducing the workload of manual cleaning, and ensuring the cleaning effect of the high-density filter screens by designing a reasonable water flow impact angle.

[0016] The present invention triggers the blocking mechanism to operate at a specific position through a trigger component, thereby separating the circulating water and the backwash water flow, ensuring that the two work independently and give full play to their own functions while maintaining the compactness of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the circulating water tank, the fixed shell and the water inlet pipe of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the water inlet pipe, the water inlet pipe and the water outlet pipe of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the filter housing, the motor and the backwash pipeline of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the motor, rotating shaft and fixing frame of the present invention; Figure 6 It is a cross-sectional view of the filter housing, the water inlet pipe and the water outlet pipe of the present invention; Figure 7 It is an exploded view of the fixed frame, high-density filter screen and rotating plate of the present invention; Figure 8 It is a cross-sectional view of the fixing frame, the high-density filter screen and the rotating plate of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the rotating plate, the moving column and the sealing shell of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the first extrusion arc, the second extrusion arc and the third extrusion arc of the present invention; Fig.11 This is a special state diagram of the fixed frame, high-density filter screen and rotating plate of the present invention.

[0018] Numbers in the figure: 1-housing, 101-circulating water tank, 102-fixed shell, 103-water inlet pipe, 104-drain pipe, 2-sedimentation tank, 3-filter shell, 301-water inlet pipe, 302-water outlet pipe, 4-motor, 5-rotating shaft, 6-fixed frame, 7-high-density filter screen, 8-recoil pipe, 801-water inlet, 802-water outlet, 803-auxiliary pipe, 9-rotating plate, 901-fixed plate, 10-moving column, 11-connecting rotating rod, 12-sealing shell, 13-first extrusion arc, 131-second extrusion arc, 132-third extrusion arc. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0020] Because when the existing device uses a filter to filter out the clay-like impurities in the circulating water, the filter needs to have a small aperture, and the clay-like impurities are easy to stick to the filter with a small aperture, which makes it impossible for the circulating water to pass through the filter smoothly, resulting in increased flow resistance of the circulating water, increased water pressure, affecting the normal circulation process of the circulating water, and making it difficult for the circulating water to circulate quickly, resulting in low efficiency in filtering out impurities in the circulating water system.

[0021] A circulating impurity removal device for cooling water of injection molding machine, reference Figure 1-Figure 5 As shown, it includes: a housing 1, a circulating water tank 101 is installed in the housing 1, the circulating water tank 101 is fixedly connected to a fixed housing 102, the circulating water tank 101 is fixedly connected and connected to a water inlet pipe 103 and a drain pipe 104; a sedimentation tank 2 is fixedly connected to the fixed housing 102, a filter housing 3 is fixedly connected to the upper side of the sedimentation tank 2, the filter housing 3 is fixedly connected and connected to a water inlet pipe 301 and a water outlet pipe 302, the water inlet pipe 301 and the water outlet pipe 302 are both connected to the water inlet pipe 103, and the water inlet pipe 103 is connected to the water outlet pipe 104. A pressure sensor is arranged in the tube 301; a motor 4 is fixedly connected to the filter shell 3, and an output shaft of the motor 4 is fixedly connected to a rotating shaft 5, and the rotating shaft 5 is located in the filter shell 3; a fixed frame 6 has a plurality of circumferentially evenly distributed fixedly connected to the rotating shaft 5, the fixed frame 6 is fitted with the filter shell 3, a high-density filter screen 7 is fixedly connected in the fixed frame 6, and a connecting line between a connecting point between the water inlet pipe 301 and the filter shell 3 and a connecting point between the water outlet pipe 302 and the filter shell 3 does not intersect with the axis of the rotating shaft 5.

[0022] In the above scheme, the circulating water tank 101, the water inlet pipe 103 and the drain pipe 104 are components of the existing circulating water system. The drain pipe 104 is fixedly connected with a water distribution pipe, which is used to pass the circulating water in the circulating water tank 101 into the injection molding machine. The water inlet pipe 103 is used to return the circulating water in the injection molding machine to the circulating water tank 101. A coarse filter screen is arranged in the water inlet pipe 103 to intercept large particles of impurities in the water inlet pipe 103. The rotating shaft 5 penetrates the filter shell 3 and is sealed and rotatably connected thereto.

[0023] The water inlet pipe 301 and the water outlet pipe 302 are both connected to the water inlet pipe 103 through a controllable valve, which can be a solenoid valve or a manually operated valve. The two valves are mainly used to change the flow path of the circulating water and control whether the circulating water flows into the filter shell 3 through the water inlet pipe 301 during the flow along the water inlet pipe 103, so as to control the intermittent activation of the components in the filter shell 3 to finely filter the circulating water, so as to extend the maintenance interval of the components in the filter shell 3 (similarly, the staff can also control the two valves to remain in the open state at all times according to the situation, so that the circulating water in the water inlet pipe 103 always flows through the water inlet pipe 301 and the water outlet pipe 302).

[0024] The motor 4 is an electric control component, which is electrically connected to the remote control terminal. The output shaft of the motor 4 drives the rotating shaft 5, the fixed frame 6 and the high-density filter screen 7 to rotate together, and replaces the high-density filter screen 7 that intercepts the circulating water flow, thereby reducing the resistance of the circulating water flow when the high-density filter screen 7 finely filters the circulating water. A pressure sensor is arranged in the water inlet pipe 301, and the pressure sensor is electrically connected to the remote control terminal. The pressure sensor is used to monitor the water pressure in the water inlet pipe 301, and then judge the amount of impurities intercepted by the high-density filter screen 7.

[0025] The working process is as follows: when the staff determines that it is necessary to finely filter the circulating water through the filter shell 3 and its components (the staff can finely filter the circulating water after a certain period of time, or monitor the content of muddy impurities in the circulating water through existing devices to determine the timing of fine filtering of the circulating water), the staff first opens the valves on the water inlet pipe 301 and the water outlet pipe 302, so that the circulating water in the water inlet pipe 103 flows into the filter shell 3 through the water inlet pipe 301. At this time, the muddy impurities in the circulating water are intercepted on the left side of the high-density filter screen 7 that is first contacted. The filtered circulating water flows back into the water inlet pipe 103 through the water outlet pipe 302. When the impurities intercepted by the high-density filter screen 7 that the circulating water first contacts are large, the resistance of the water flow through the high-density filter screen 7 increases. At this time, the pressure sensor in the water inlet pipe 301 detects that the water pressure in the water inlet pipe 301 increases, and transmits the data to the remote control terminal. The remote control terminal starts the motor 4 to work, so that the output shaft driven by the motor 4 drives the rotating shaft 5, the fixed frame 6 and the high-density filter screen 7 to rotate clockwise by a certain angle ( Figure 1 From top to bottom), the high-density filter screen 7 with more intercepted impurities is rotated to a certain angle toward the rear side of the filter shell 3, and the next high-density filter screen 7 is rotated to a position to intercept impurities in the water flow between the water inlet pipe 301 and the water outlet pipe 302. After all high-density filter screens 7 have intercepted impurities in turn, the staff closes the valves on the water inlet pipe 301 and the water outlet pipe 302, disassembles the filter shell 3 and cleans the high-density filter screens 7.

[0026] It is particularly preferred that reference Figure 6As shown, there are at least four fixing frames 6 , and there is at least one fixing frame 6 between the connection point between the water inlet pipe 301 and the filter housing 3 and the connection point between the water outlet pipe 302 and the filter housing 3 .

[0027] In the above scheme, the number of fixed frames 6 is specifically 6 in this scheme, so that when the fixed frame 6 and the high-density filter net 7 follow the rotation of the rotating shaft 5, there is always at least one high-density filter net 7 to filter the water flow between the water inlet pipe 301 and the water outlet pipe 302, thereby ensuring that the impurities in the water flow are completely intercepted by the high-density filter net 7 during the process of the water flow from the water inlet pipe 301 to the water outlet pipe 302.

[0028] It is particularly preferred that reference Figure 6 and Figure 8 As shown, the high-density filter screen 7 is made of a flexible material, which is used to form a depression when the high-density filter screen 7 is impacted by water flow.

[0029] In the above scheme, by setting the high-density filter net 7 to be a flexible material, the high-density filter net 7 is recessed in the direction of the water flow under the impact of the water flow, and the equivalent use area of ​​the high-density filter net 7 is increased, thereby increasing the number of impurities that the high-density filter net 7 can intercept. In the process of cleaning the high-density filter net 7, it is only necessary to use water flow in the opposite direction to backwash the high-density filter net 7, so that the high-density filter net 7 protrudes out of the fixed frame 6 under the impact of the water flow, thereby ensuring that the impurities in the high-density filter net 7 are quickly discharged outward.

[0030] It is particularly preferred that reference Figure 5 , Figure 6 and Fig.10 As shown, it also includes: a recoil pipe 8, which is fixedly connected to and connected to the sedimentation box 2, and the recoil pipe 8 is connected to the filter shell 3, and the connecting points are respectively a water inlet 801 and a water outlet 802. A pumping element is arranged in the recoil pipe 8, and the pumping element is used to pump the water in the sedimentation box 2 into the filter shell 3. The water inlet 801 is used to guide the water flow therein to impact the high-density filter screen 7; a blocking mechanism, which has a plurality of circumferentially evenly distributed ones, which are respectively used to control whether the high-density filter screen 7 in the adjacent fixed frame 6 is working, and is arranged in the adjacent fixed frame 6.

[0031] In the above scheme, the pumping element in the recoil pipe 8 is an electronically controlled element, which can be specifically a small water pump. The pumping element is electrically connected to the remote control terminal and is used to extract water from the sedimentation tank 2 into the recoil pipe 8. The recoil pipe 8 guides the water flow therein so that the water flow therein backflushes the adjacent high-density filter screen 7, thereby replacing the step of manually cleaning the high-density filter screen 7 and increasing the applicability of the device.

[0032] Because in the above scheme, there are two water flows in the filter shell 3, namely the circulating water between the water inlet pipe 301 and the water outlet pipe 302, and the water flow between the water inlet 801 and the water outlet 802 for cleaning the adjacent high-density filter screen 7. In order to avoid the two water flows from intersecting and converging with each other, affecting the effect of the filtered water flow and the backwash water flow, a blocking mechanism is activated between the water inlet pipe 301 and the water outlet pipe 302 and the water inlet 801 and the water outlet 802, thereby cutting off the communication path of the above two water flows, thereby prompting the above two water flows to filter and backwash independently without interfering with each other.

[0033] The specific working process is as follows: while the remote control terminal controls the motor 4 to work, it controls the pumping element in the recoil pipe 8 to work for a certain period of time, and the pumping element extracts water from the sedimentation tank 2. The water in the sedimentation tank 2 flows into the filter shell 3 through the recoil pipe 8, and the adjacent high-density filter screen 7 is backwashed and cleaned. The cleaned impurities follow the water flow and flow back into the sedimentation tank 2 through the recoil pipe 8 from the outlet 802. The impurities gradually settle to the bottom of the sedimentation tank 2 in the sedimentation tank 2 and no longer enter the recoil pipe 8. In the above process, by triggering the blocking mechanism on the fixed frame 6 between the water inlet pipe 301 and the water outlet pipe 302 and the water inlet 801 and the water outlet 802, the blocking mechanism blocks the fixed frame 6 at this location, thereby preventing the water flow at the water inlet pipe 301 and the water outlet pipe 302 from flowing with the water flow at the water inlet 801 and the water outlet 802.

[0034] It is particularly preferred that reference Figure 5 , Figure 6 and Fig.10 As shown, the angle between the axis of the water inlet 801 and the axis of the water outlet 802 is less than or equal to 90°, and the axis of the water inlet 801 faces the axis of the rotating shaft 5, so as to enable the water flowing out of the water inlet 801 to directly impact the rotating shaft 5.

[0035] In the above scheme, by making an angle between the axis of the water inlet 801 and the axis of the water outlet 802, and ensuring that the angle is less than or equal to 90°, it is ensured that the water flow flowing into the filter shell 3 from the water inlet 801 must be bent before it can flow back into the water outlet 802, so as to create some turbulent vortices in the filter shell 3, promote the water flow in the water inlet 801 to carry the impurities in the filter shell 3 and flow into the water outlet 802 together, and by making the axis of the water inlet 801 face the axis of the rotating shaft 5, it is ensured that the water flow in the water inlet 801 can effectively clean the impurities sticking near the outer surface of the rotating shaft 5.

[0036] It is particularly preferred that reference Figure 7-Figure 9 and Fig.11As shown, the blocking mechanism includes: a rotating plate 9, which has a number of evenly distributed ones, rotatably connected in adjacent fixed frames 6, two adjacent rotating plates 9 are sealed and matched with each other, and the fixed frame 6 is fixedly connected with symmetrically distributed fixed plates 901, and the fixed plate 901 and the adjacent rotating plates 9 are sealed and matched with each other; a moving column 10 is sealingly and slidably connected in the fixed frame 6, and the moving column 10 is rotatably connected with evenly distributed connecting rotating rods 11, and the connecting rotating rods 11 are rotatably connected with the adjacent rotating plates 9; a sealing shell 12, fixedly connected to the fixed frame 6, the moving column 10 is slidably connected to the sealing shell 12, and a spring is fixedly connected between the two; a trigger component, used to squeeze the adjacent moving columns 10 to move, and the trigger component is arranged in the filter shell 3.

[0037] In the above scheme, the upper and lower sides of the rotating plate 9 are both inclined surfaces to increase the contact area between the rotating plate 9 and the adjacent rotating plate 9 or the adjacent fixed plate 901, and increase the sealing between the rotating plate 9 and the adjacent rotating plate 9 or the adjacent fixed plate 901. The high-density filter screen 7 and the sealing mechanism are respectively located on both sides of the fixed frame 6. Therefore, after the rotating plate 9 and the adjacent fixed plate 901 block the adjacent fixed frame 6, the water flow can no longer pass through the adjacent high-density filter screen 7 to pass through the adjacent fixed frame 6.

[0038] The working process of the blocking mechanism is as follows: when the moving column 10 is not squeezed, all adjacent rotating plates 9 are in the position as follows: Fig. 9 In the blocked state shown, water cannot flow through the adjacent fixed frame 6. When the movable column 10 is squeezed and moves downward, the movable column 10 drives the adjacent connecting rod 11 to move downward together during the downward movement. The connecting rod 11 deflects during the downward movement, driving the rotating plate 9 to rotate and open (such as Fig.11 As shown in the figure, the rotating plate 9 rotates along the connection with the fixed frame 6, and the moving column 10 squeezes the spring between it and the adjacent sealing shell 12 to store force. When the moving column 10 is no longer squeezed, the moving column 10 moves upward and resets under the action of the spring between it and the sealing shell 12, and drives the connecting rod 11 and the rotating plate 9 to rotate and reset.

[0039] It is particularly preferred that reference Figure 5 and Figure 6 As shown, the side of the backwash pipe 8 close to the water inlet 801 is fixedly connected and connected with an auxiliary pipe 803, the auxiliary pipe 803 is connected to the filter shell 3, and the connection point between the two is located on the side of the water outlet 802 away from the water inlet 801, and the auxiliary pipe 803 is used to assist the water inlet 801 to flush the adjacent high-density filter screen 7.

[0040] In the above scheme, the axis of the auxiliary pipe 803 is toward the axis center of the rotating shaft 5 to enhance the cleaning effect of impurities sticking to the outer surface of the rotating shaft 5. The water flow on the side of the water inlet 801 in the recoil pipe 8 is diverted through the auxiliary pipe 803, and the water flow on this side is sprayed into the filter shell 3 through the water outlet 802 away from the side of the water inlet 801. After contacting the rotating shaft 5, the water flow returns to the water outlet 802 and flows out of the recoil pipe 8. After the two water flows intersect with each other, they flow out from the water outlet 802 together. Through the interaction of the two water flows, it is ensured that the front and back sides of the high-density filter screen 7 are fully cleaned, so that when the cleaned high-density filter screen 7 filters the water flow between the water inlet pipe 301 and the water outlet pipe 302, the water flow between the water inlet pipe 301 and the water outlet pipe 302 is always subject to low resistance.

[0041] It is particularly preferred that reference Figure 6 and Fig.10 As shown, the cross-sectional area of ​​the auxiliary pipe 803 is smaller than the cross-sectional area of ​​the backflushing pipe 8, and the connection between the auxiliary pipe 803 and the filter housing 3 is elliptical.

[0042] In the above scheme, in order to prevent the water flow in the auxiliary pipe 803 from affecting the backwashing effect of the water flow in the water inlet 801 on the high-density filter screen 7, the impact force of the water flow in the auxiliary pipe 803 is weakened by reducing the cross-sectional area of ​​the auxiliary pipe 803, thereby reducing the situation where the water flow in the auxiliary pipe 803 directly rushes into the space between the water inlet 801 and the water outlet 802, and by setting the auxiliary pipe 803 to an elliptical shape, the long axis of the elliptical shape of the auxiliary pipe 803 is ensured to be in a vertical direction, thereby ensuring that the water flow rushing out of the auxiliary pipe 803 can still effectively cover the adjacent rotating shaft 5 and the adjacent high-density filter screen 7, thereby ensuring the cleaning effect on the rotating shaft 5 and the high-density filter screen 7.

[0043] It is particularly preferred that reference Figure 6 , Fig.10 and Fig.11 As shown, the trigger component includes: a first extrusion arc 13, which is fixed in the filter shell 3, the first extrusion arc 13 is located between the water inlet pipe 301 and the water outlet pipe 302, the first extrusion arc 13 is sealed and extruded with the adjacent movable column 10, and the first extrusion arc 13 is sealed and matched with the adjacent fixed frame 6; a second extrusion arc 131, which is fixed in the filter shell 3, the second extrusion arc 131 is located between the water inlet 801 and the water outlet 802, the second extrusion arc 131 is pressed and matched with the adjacent movable column 10, and the second extrusion arc 131 is sealed and matched with the adjacent fixed frame 6; a third extrusion arc 132, which is fixed to one side of the filter shell 3 close to the auxiliary pipe 803, and the arc length of the third extrusion arc 132 is greater than the arc length at the connection point between the auxiliary pipe 803 and the filter shell 3.

[0044] In the above scheme, both ends of the first squeezing arc 13, the second squeezing arc 131 and the third squeezing arc 132 are provided with inclined surfaces, so that the three squeeze the adjacent moving columns 10 to move and control the adjacent blocking mechanisms to open, wherein the first squeezing arc 13 is located between the water inlet pipe 301 and the water outlet pipe 302, and is used to ensure that the blocking mechanism on the fixed frame 6 between the water inlet pipe 301 and the water outlet pipe 302 is always in an open state, so as to ensure the smooth flow of water between the water inlet pipe 301 and the water outlet pipe 302, and the second squeezing arc 131 is installed between the water inlet 801 and the water outlet 802, and is used to ensure that the blocking mechanism on the fixed frame 6 between the water inlet 801 and the water outlet 802 is always in an open state, so as to ensure that the water flowing out of the water inlet 801 passes smoothly through the high-density filter screen 7 on the fixed frame 6 and flows into the water outlet 802, so as to prevent the high-density filter screen from leaking out of the water inlet 801. The filter screen 7 is backflushed, and the third extrusion arc 132 is fixedly connected to the connection point between the auxiliary pipe 803 and the filter shell 3, which is used to control the sealing mechanism on the fixed frame 6 at the auxiliary pipe 803 to always be in an open state, so that the water flowing out of the auxiliary pipe 803 can freely pass through the adjacent high-density filter screen 7, thereby ensuring the cleaning effect on the front of the high-density filter screen 7, and there is a certain gap between the second extrusion arc 131 and the third extrusion arc 132, which is just located at the water outlet 802, ensuring that the sealing mechanism in the fixed frame 6 in the middle of the water outlet 802 is in a closed state, blocking the water flows between the water inlet 801 and the auxiliary pipe 803 from interlacing, and prompting the two water flows to be guided by the sealing mechanism in the fixed frame 6, and then uniformly sprayed out through the water outlet 802, by imposing a clear flow direction on the water flow, the effect of the water flow driving the adjacent impurities to flow out of the filter shell 3 is enhanced.

[0045] It is particularly preferred that reference Fig.10 As shown, the distances between the second extrusion arc 131 and the third extrusion arc 132 and the first extrusion arc 13 are greater than the distance between the farthest points of two adjacent fixing frames 6 .

[0046] In the above scheme, by ensuring that the distance between the second extrusion arc 131 and the third extrusion arc 132 and the first extrusion arc 13 is greater than the distance between two adjacent fixed frames 6, it is ensured that there are always at least two symmetrical sets of sealing mechanisms in a closed state between the water inlet pipe 301 and the water outlet pipe 302 and the water inlet 801 and the auxiliary pipe 803, thereby ensuring that the water flow between the water inlet pipe 301 and the water outlet pipe 302 and the water flow between the water inlet 801 and the auxiliary pipe 803 will not be connected to each other.

[0047] It should be understood that the above description is only for exemplary purposes and is not intended to limit the present invention. Those skilled in the art will appreciate that variations of the present invention will be included within the scope of the present invention.

Claims

1. A circulating impurity removal device for cooling water of an injection molding machine, characterized in that: Included are: An outer shell (1), wherein a circulating water tank (101) is installed in the outer shell (1), the circulating water tank (101) is fixedly connected to a fixed shell (102), and the circulating water tank (101) is fixedly connected to and communicated with a water inlet pipe (103) and a drain pipe (104); A sedimentation box (2) is fixedly connected to the fixed shell (102); a filter shell (3) is fixedly connected to the upper side of the sedimentation box (2); a water inlet pipe (301) and a water outlet pipe (302) are fixedly connected to the filter shell (3) and are in communication with each other; the water inlet pipe (301) and the water outlet pipe (302) are both in communication with the water inlet pipe (103); and a pressure sensor is arranged in the water inlet pipe (301); A motor (4) is fixedly connected to the filter housing (3); an output shaft of the motor (4) is fixedly connected to a rotating shaft (5); and the rotating shaft (5) is located inside the filter housing (3); The fixing frame (6) has a plurality of fixing frames evenly distributed in the circumferential direction and is fixedly connected to the rotating shaft (5). The fixing frame (6) fits the filter housing (3). A high-density filter screen (7) is fixedly connected inside the fixing frame (6). The connecting line between the connecting point between the water inlet pipe (301) and the filter housing (3) and the connecting point between the water outlet pipe (302) and the filter housing (3) does not intersect the axis of the rotating shaft (5).

2. A circulating impurity removal device for cooling water of an injection molding machine according to claim 1, characterized in that: There are at least four fixing frames (6), and at least one fixing frame (6) is present between the connection point between the water inlet pipe (301) and the filter housing (3) and the connection point between the water outlet pipe (302) and the filter housing (3).

3. A circulating impurity removal device for cooling water of an injection molding machine according to claim 1, characterized in that: The high-density filter screen (7) is made of a flexible material, and is used to form a depression when the high-density filter screen (7) is impacted by a water flow.

4. A circulating impurity removal device for cooling water of an injection molding machine according to claim 3, characterized in that: Also included are: a backwash pipe (8) fixedly connected to and connected to the sedimentation tank (2); the backwash pipe (8) is connected to the filter housing (3), and the connecting points are a water inlet (801) and a water outlet (802); a pumping element is provided in the backwash pipe (8), and the pumping element is used to pump water in the sedimentation tank (2) into the filter housing (3); the water inlet (801) is used to guide the water flow in the backwash pipe to impact the high-density filter screen (7); The blocking mechanism has a plurality of blocking mechanisms evenly distributed in the circumferential direction, each of which is used to control whether the high-density filter screen (7) in the adjacent fixed frame (6) is working, and is arranged in the adjacent fixed frame (6).

5. A circulating impurity removal device for cooling water of an injection molding machine according to claim 4, characterized in that: The angle between the axis of the water inlet (801) and the axis of the water outlet (802) is less than or equal to 90°, and the axis of the water inlet (801) faces the axis of the rotating shaft (5), so as to cause the water flowing out of the water inlet (801) to directly impact the rotating shaft (5).

6. A circulating impurity removal device for cooling water of an injection molding machine according to claim 4, characterized in that: The blocking mechanism comprises: The rotating plates (9) have a plurality of evenly distributed ones, and are rotatably connected to adjacent fixed frames (6), and two adjacent rotating plates (9) are sealed and matched with each other; the fixed frames (6) are fixedly connected with symmetrically distributed fixed plates (901), and the fixed plates (901) and adjacent rotating plates (9) are sealed and matched with each other; A movable column (10) is sealingly and slidably connected in the fixed frame (6); the movable column (10) is rotatably connected to evenly distributed connecting rods (11); the connecting rods (11) are rotatably connected to the adjacent rotating plates (9); The sealing shell (12) is fixedly connected to the fixed frame (6); the movable column (10) is slidably connected to the sealing shell (12), and a spring is fixedly connected between the two; A trigger component is used for squeezing the adjacent moving column (10) to move, and the trigger component is arranged in the filter housing (3).

7. A circulating impurity removal device for cooling water of an injection molding machine according to claim 6, characterized in that: An auxiliary pipe (803) is fixedly connected to and communicated with the side of the backwash pipe (8) close to the water inlet (801); the auxiliary pipe (803) is communicated with the filter housing (3), and the connection point between the two is located on the side of the water outlet (802) away from the water inlet (801); the auxiliary pipe (803) is used to assist the water inlet (801) in flushing the adjacent high-density filter screen (7).

8. A circulating impurity removal device for cooling water of an injection molding machine according to claim 7, characterized in that: The cross-sectional area of ​​the auxiliary pipe (803) is smaller than the cross-sectional area of ​​the backflushing pipe (8), and the connection between the auxiliary pipe (803) and the filter housing (3) is elliptical.

9. A circulating impurity removal device for cooling water of an injection molding machine according to claim 8, characterized in that: The trigger component includes: a first extrusion arc (13) fixedly connected to the filter housing (3), the first extrusion arc (13) being located between the water inlet pipe (301) and the water outlet pipe (302), the first extrusion arc (13) being in sealing and extrusion cooperation with the adjacent movable column (10), and the first extrusion arc (13) being in sealing cooperation with the adjacent fixed frame (6); a second extrusion arc (131) fixedly connected to the filter housing (3); the second extrusion arc (131) being located between the water inlet (801) and the water outlet (802); the second extrusion arc (131) being extruded and matched with the adjacent movable column (10); and the second extrusion arc (131) being sealed and matched with the adjacent fixed frame (6); The third extrusion arc (132) is fixedly connected to a side of the filter housing (3) close to the auxiliary tube (803), and the arc length of the third extrusion arc (132) is greater than the arc length at the connection point between the auxiliary tube (803) and the filter housing (3).

10. A circulating impurity removal device for cooling water of an injection molding machine according to claim 9, characterized in that: The distances between the second extrusion arc (131) and the third extrusion arc (132) and the first extrusion arc (13) are both greater than the distance between the farthest points of two adjacent fixing frames (6).

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