Rubber filter driven by gear pump

Abstract

The invention relates to the technical field of rubber processing, in particular to a gear pump driven rubber filter which comprises a machine base, a control box and a machine body, the control box and the machine body are both installed on the upper surface of the machine base, the machine body is kept horizontal, and the gear pump is fixedly connected to the left side of the machine body; the gear pump is electrically connected with the control box and drives the screw rod in the machine body to rotate; the discharging device is installed on the top of the machine body and electrically connected with the control box. The filtering mechanism is fixedly connected to the right end of the machine body; the supporting seat is fixedly connected to the right end of the machine body, a runner is formed in the supporting seat, and a mounting groove is formed in the right side of an inner cavity of the supporting seat. The device has an automatic rubber cooling function, prevents the rubber from coking due to too high temperature, prevents the rubber from deteriorating, protects the filter screen, monitors the permeability of the filter screen, enables the filter screen to be cleaned in time, and improves the rubber filtering efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of rubber processing, and in particular to a rubber strainer driven by a gear pump. Background Art

[0002] The rubber filter is a machine that uses the pushing and conveying action of the screw to remove impurities from the rubber or reclaimed rubber. It is mainly composed of a screw, a barrel, a filter head and a transmission device; The gear pump rotates the screw to transport the rubber in the barrel to the rubber filter head. The filter screen filters out solid impurities in the rubber, and then squeezes the rubber out through the head to remove impurities from the rubber. During the rubber extrusion process, the rubber filter head will gradually heat up. Once the rubber is overheated, it will coke, the plasticity of the rubber will decrease, and the fluidity will be lost, which will not only cause the rubber to deteriorate, but also affect the filtration of the rubber. As the impurities blocked by the filter screen increase, the permeability of the filter screen decreases. Once the filter screen cannot ensure the normal filtration of the rubber, the rubber pressure increases, which is easy to damage the filter screen, resulting in uncontrolled rubber filtering. For this reason, a gear pump-driven rubber filter is proposed. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art that the rubber filtering temperature cannot be controlled and the rubber pressure cannot be relieved, the present invention provides a rubber filter driven by a gear pump.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rubber filter driven by a gear pump, comprising a base, a control box and a fuselage, wherein the control box and the fuselage are both installed on the upper surface of the base, and the fuselage is kept horizontal. It also comprises a gear pump, a feeder and a filtering mechanism, wherein the gear pump is fixedly connected to the left side of the fuselage, and the gear pump is electrically connected to the control box, and the screw in the fuselage is driven to rotate by the gear pump; the feeder is installed on the top of the fuselage, and the feeder is electrically connected to the control box; the filtering mechanism is fixedly connected to the right end of the fuselage.

[0005] Preferably, the filtering mechanism includes a support seat, a flow channel, a mounting groove, a filter screen, a machine head, a temperature control component, a conduit and an explosion-proof component. The support seat is fixedly connected to the right end of the fuselage, a flow channel is opened inside the support seat, and a mounting groove is opened on the right side of the inner cavity of the support seat; the filter screen is inserted into the inner cavity of the mounting groove; one side of the machine head is connected to the front of the support seat by a hinge, and the other side is locked with the support seat by bolts; the temperature control component is horizontally embedded in the bottom end of the left side wall of the support seat; one end of the conduit is installed on the outer wall of the temperature control component, and the other end is connected to the flow channel; the explosion-proof component is vertically embedded in the bottom end of the support seat.

[0006] Preferably, both ends of the flow channel are chamfered.

[0007] Preferably, there is a gap between the filter screen and the machine head.

[0008] Preferably, the temperature control component includes a copper tube, an expansion body, a first piston, a piston rod, a valve body, a spring, a valve core and a guide hole, the copper tube is horizontally embedded in the bottom end of the left side wall of the support seat; the expansion body fills the right side of the inner cavity of the copper tube; the first piston is inserted in the middle of the inner cavity of the copper tube so as to be able to slide left and right; one end of the piston rod is installed on the left end of the first piston; the valve body is fixedly connected to the left end of the copper tube, the front side of the valve body is connected to the conduit, and the rear side of the valve body is connected to a cold water pipe; the spring and the valve core are respectively inserted on the left and right sides of the inner cavity of the valve body, and the valve core is connected to the other end of the piston rod, and the valve core is pushed to the right under the action of the spring elastic force, and a guide hole is opened on the outer wall of the valve core.

[0009] Preferably, the expansion body is made of mercury.

[0010] Preferably, the explosion-proof component includes a box body, a pressure relief hole, a rotating shaft, a gear, a turntable, a connecting rod, a second piston, a counterweight, a rack and a proximity switch, and the box body is vertically embedded in the bottom end of the support seat; there are at least two pressure relief holes, which are equidistantly arranged on the top of the outer wall of the box body; the rotating shaft is installed in the middle of the inner cavity of the box body along the front and rear directions through a bearing; the gear and the turntable are installed at the front and rear ends of the rotating shaft respectively; one end of the connecting rod is connected to the outer edge of the outer wall of the turntable through a pin; the second piston is inserted into the top of the inner cavity of the box body so as to slide up and down, and the bottom end of the second piston is connected to the other end of the connecting rod through a pin; the counterweight is inserted into the bottom end of the inner cavity of the box body so as to slide up and down; the rack is vertically installed on the top of the counterweight, and the rack is meshed with the gear, so that the rack is lowered under the action of the gravity of the counterweight, and then the gear drives the turntable to rotate counterclockwise; the proximity switch is horizontally embedded in the bottom end of the left side wall of the box body, and the proximity switch is electrically connected to the controller.

[0011] Preferably, the gravity of the counterweight block can drive the rack to move downward, and the turntable is rotated counterclockwise under the transmission of the rack and the gear, so that the connecting rod pulls the second piston to move upward.

[0012] Preferably, a rubber pad is bonded to the bottom of the inner cavity of the box body.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The expansion body of the present invention increases with the increase of the temperature of the support seat, and the expansion body squeezes the first piston to the left. At the same time, the piston rod pushes the valve core to move left, and the guide hole can increase the flow of cold water, thereby increasing the flow of cold water through the flow channel and improving the cooling efficiency of the support seat. As the temperature of the support seat drops, the volume of the expansion body decreases, and the spring pushes the valve core to move right under the action of its own elastic force. The flow of cold water through the guide hole decreases, thereby reducing the cooling efficiency of the support seat. Therefore, the rubber has an automatic cooling function, which prevents the rubber from being coked due to excessive temperature, avoids rubber deterioration, and protects the filter.

[0014] 2. The present invention receives the rubber pressure through the second piston. When the filter screen is overloaded with rubber, the rubber pressure increases, prompting the second piston to descend. The counterweight block rises under the transmission of the rack and gear, and the second piston opens the pressure relief hole. The rubber is discharged from the pressure relief hole to achieve rubber pressure relief in the support seat. The proximity switch is blocked by the counterweight block and triggered, and the control box sounds an alarm to monitor the permeability of the filter screen, so that the filter screen can be cleaned in time and the rubber filtration efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A partial enlarged view of the Figure 3 It is a schematic diagram of the structure of the filtering mechanism of the present invention; Figure 4 It is a front cross-sectional view of the filtering mechanism of the present invention; Figure 5 It is a left side cross-sectional view of the support seat of the present invention; Figure 6 It is a front cross-sectional view of the temperature control assembly of the present invention; Figure 7 It is a front cross-sectional view of the explosion-proof component of the present invention.

[0016] In the figure: 1. base; 2. control box; 3. fuselage; 4. gear pump; 5. feeder; 6. filter mechanism; 61. support base; 62. flow channel; 63. mounting groove; 64. filter screen; 65. head; 66. temperature control component; 67. catheter; 68. explosion-proof component; 661. copper tube; 662. expansion body; 663. first piston; 664. piston rod; 665. valve body; 666. valve core; 667. guide hole; 668. spring; 681. box body; 682. pressure relief hole; 683. rotating shaft; 684. gear; 685. turntable; 686. connecting rod; 687. second piston; 688. counterweight; 689. rack; 6810. proximity switch. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The present invention provides a technical solution: a rubber filter driven by a gear pump, such as Figure 1-Figure 7As shown, it includes a base 1, a control box 2 and a fuselage 3. The control box 2 and the fuselage 3 are both installed on the upper surface of the base 1. A gear pump 4 is installed at the left end of the fuselage 3. The gear pump 4 drives the screw in the fuselage 3 to rotate, and the rubber is transported from left to right. The gear pump 4 is electrically connected to the control box 2. A feeder 5 is fixedly connected to the top of the fuselage 3. The rubber is dropped into the inner cavity of the fuselage 3 through the feeder 5. A filtering mechanism 6 is fixedly connected to the right end of the fuselage 3.

[0019] As a preferred embodiment, further, the filtering mechanism 6 includes a support seat 61 fixedly connected to the right end of the fuselage 3, a flow channel 62 is provided inside the support seat 61, both ends of the flow channel 62 are chamfered to facilitate the passage of cold water and prevent vibration when the cold water flows, the rear opening of the flow channel 62 is connected to the cold water return pipe, a mounting groove 63 is provided on the right side of the inner cavity of the support seat 61, a filter screen 64 is inserted into the inner cavity of the mounting groove 63, and solid impurities in the rubber are filtered out by the filter screen 64, the front end of the support seat 61 is connected to one end of a machine head 65 by a hinge, and the other end of the machine head 65 is locked with the rear side of the support seat 61 by bolts, there is a gap between the filter screen 64 and the machine head 65, so that the filtered rubber can be squeezed out through the machine head 65, a temperature control component 66 is horizontally embedded at the bottom end of the left side wall of the support seat 61, one end of a conduit 67 is installed on the front of the temperature control component 66, and the other end of the conduit 67 is connected to the front end opening of the flow channel 62, and an explosion-proof component 68 is embedded at the bottom of the support seat 61.

[0020] As a preferred solution, further, the temperature control component 66 includes a copper tube 661 which is laterally embedded in the bottom end of the left side wall of the support seat 61. The right side of the inner cavity of the copper tube 661 is filled with an expansion body 662. The expansion body 662 is made of mercury. A first piston 663 which can slide left and right is inserted in the middle of the inner cavity of the copper tube 661. The copper tube 661 and the support seat 61 realize heat conduction. The temperature of the expansion body 662 rises as the temperature of the support seat 61 rises. The volume of mercury is proportional to the temperature. Mercury can squeeze the first piston 663 to move left. The left end of the first piston 663 is installed There is one end of a piston rod 664, and the left end of the copper tube 661 is fixedly connected to a valve body 665. The front of the valve body 665 is connected to the conduit 67, and the rear side of the valve body 665 is externally connected to a cold water pipe. The left and right ends of the inner cavity of the valve body 665 are respectively inserted with a spring 668 and a valve core 666. The right end of the valve body 665 is connected to the left end of the piston rod 664. Under the action of the elastic force of the spring 668, the valve core 666 is pushed to move right. A guide hole 667 is opened on the front of the valve core 666. As the valve core 666 moves to the left, the cross-sectional area of ​​the guide hole 667 connecting with the cold water pipe increases, and the water cooling flow rate gradually increases.

[0021] As a preferred solution, further, the explosion-proof component 68 includes a box body 681 vertically embedded in the bottom of the support seat 61, and at least two pressure relief holes 682 are equidistantly opened on the top of the outer wall of the box body 681. The pressure relief holes 682 can discharge rubber and reduce the rubber pressure in the support seat 61. A rotating shaft 683 is installed in the middle of the inner cavity of the box body 681 through a bearing along the front and rear directions. Gears 684 and a turntable 685 are installed at the front and rear ends of the rotating shaft 683 respectively. The outer edge of the front side of the turntable 685 is connected to one end of a connecting rod 686 through a pin shaft, and the other end of the connecting rod 686 is connected to the outer edge of the turntable 685 through a pin shaft. The pin is connected to a second piston 687 which is plugged into the top of the inner cavity of the box body 681, and a counterweight block 688 which can slide up and down is plugged into the bottom of the inner cavity of the box body 681. A rack 689 which is meshed with the gear 684 is installed on the top of the counterweight block 688. The gravity of the counterweight block 688 drives the rack 689 to move downward, and the turntable 685 rotates counterclockwise under the transmission of the rack 689 and the gear 684, so that the connecting rod 686 pulls the second piston 687 to move upward. A rubber pad is bonded to the bottom of the inner cavity of the box body 681 to cushion the descent of the counterweight block 688.

[0022] Working principle: Step 1: The rubber with filter is put into the feeder 5, and the rubber is introduced into the body 3 through the feeder 5. The gear pump 4 drives the screw in the body 3 to rotate, so that the rubber moves from left to right. The filter 64 filters the rubber to remove solid impurities in the rubber, and then the rubber is squeezed out from the head 65 to achieve rubber filtering treatment; Step 2: As the filter 64 filters the rubber, the pressure of the rubber in the support seat 61 increases, causing the temperature to rise. Under the condition of heat conduction between the support seat 61 and the copper tube 661, the temperature of the expansion body 662 increases, and the volume of the expansion body 662 increases with the temperature. When the volume of the expansion body 662 expands, it squeezes the first piston 663 to the left, causing the valve core 666 to move left, and the guide hole 667 gradually increases the flow of cold water. The cold water flows through the flow channel 62 to cool the rubber. When the temperature drops, the volume of the expansion body 662 decreases, and the elastic force of the spring 668 pushes the valve core 666 to move right. The conduction area of ​​the guide hole 667 decreases, reducing the flow of cold water. Therefore, the automatic temperature control of the support seat 61 is achieved to prevent the rubber from being coked due to excessive temperature. Step three, as the number of impurities blocked by the filter 64 increases, the permeability of the filter 64 gradually decreases, and the pressure in the support seat 61 increases as a result, the rubber can squeeze the second piston 687 downward, causing the connecting rod 686 to pull the turntable 685 to rotate clockwise, and the counterweight 688 rises under the transmission of the gear 684 and the rack 689. The second piston 687 allows the pressure relief hole 682 to connect with the support seat 61, and the rubber can be discharged from the pressure relief hole 682 to relieve the pressure on the rubber and avoid safety hazards. The counterweight 688 blocks the proximity switch 6810, and the proximity switch 6810 feeds back an electrical signal to the control box 2. The control box 2 gives an alarm, prompting the staff to clean the filter 64.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rubber strainer driven by a gear pump, comprising a machine base (1), a control box (2) and a machine body (3), wherein the control box (2) and the machine body (3) are both mounted on the upper surface of the machine base (1), and the machine body (3) is kept horizontal, characterized in that: Gear pump driven rubber strainer also includes: A gear pump (4) is fixedly connected to the left side of the machine body (3), and the gear pump (4) is electrically connected to the control box (2), and the gear pump (4) drives the screw in the machine body (3) to rotate; A feeder (5) is mounted on the top of the machine body (3), and the feeder (5) is electrically connected to the control box (2); A filtering mechanism (6) fixedly connected to the right end of the body (3); The filtering mechanism (6) comprises: A support seat (61) is fixedly connected to the right end of the fuselage (3), a flow channel (62) is provided inside the support seat (61), and a mounting groove (63) is provided on the right side of the inner cavity of the support seat (61); A filter screen (64) inserted into the inner cavity of the mounting groove (63); A machine head (65), one side of which is connected to the front side of the support base (61) via a hinge, and the other side of which is locked to the support base (61) via bolts; A temperature control component (66) is transversely embedded in the bottom end of the left side wall of the support seat (61); A conduit (67), one end of which is mounted on the outer wall of the temperature control component (66) and the other end of which is in communication with the flow channel (62); An explosion-proof component (68) is vertically embedded in the bottom end of the support seat (61).

2. A rubber strainer driven by a gear pump according to claim 1, characterized in that: Both ends of the flow channel (62) are chamfered.

3. A rubber strainer driven by a gear pump according to claim 2, characterized in that: There is a gap between the filter screen (64) and the machine head (65).

4. A rubber strainer driven by a gear pump according to claim 3, characterized in that: The temperature control component (66) comprises: A copper tube (661) is transversely embedded in the bottom end of the left side wall of the support seat (61); An expansion body (662) is filled in the right side of the inner cavity of the copper tube (661); A first piston (663) is inserted into the middle of the inner cavity of the copper tube (661) so as to be slidable left and right; A piston rod (664), one end of which is mounted on the left end of the first piston (663); A valve body (665) is fixedly connected to the left end of the copper tube (661); the front side of the valve body (665) is connected to the conduit (67), and the rear side of the valve body (665) is connected to a cold water pipe; The spring (668) and the valve core (666) are respectively inserted into the left and right sides of the inner cavity of the valve body (665), and the valve core (666) is connected to the other end of the piston rod (664). Under the elastic force of the spring (668), the valve core (666) is pushed to move rightward, and the outer wall of the valve core (666) is provided with a guide hole (667).

5. A rubber strainer driven by a gear pump according to claim 4, characterized in that: The expansion body (662) is made of mercury.

6. A rubber strainer driven by a gear pump according to claim 5, characterized in that: The explosion-proof assembly (68) comprises: A box body (681) is vertically embedded in the bottom end of the support base (61); There are at least two pressure relief holes (682) which are equidistantly arranged on the top of the outer wall of the box body (681); A rotating shaft (683) is installed in the middle of the inner cavity of the box body (681) along the front-to-back direction via a bearing; The gear (684) and the rotating disk (685) are respectively mounted on the front and rear ends of the rotating shaft (683); A connecting rod (686), one end of which is connected to the outer edge of the outer wall of the rotating disk (685) through a pin; The second piston (687) is inserted into the top of the inner cavity of the box body (681) so as to be able to slide up and down, and the bottom end of the second piston (687) is connected to the other end of the connecting rod (686) via a pin shaft; A counterweight block (688) is inserted into the bottom end of the inner cavity of the box body (681) so as to be able to slide up and down; A rack (689) is vertically mounted on the top of the counterweight (688), and the rack (688) is meshed with the gear (684). Under the gravity of the counterweight (688), the rack (689) descends, thereby causing the gear (684) to drive the turntable (685) to rotate counterclockwise; The proximity switch (6810) is laterally embedded in the bottom end of the left side wall of the box body (681), and the proximity switch (6810) is electrically connected to the controller (2).

7. A rubber strainer driven by a gear pump according to claim 6, characterized in that: The weight of the counterweight (688) can drive the rack (689) to move downward, and the rotating disk (685) can rotate counterclockwise under the transmission of the rack (689) and the gear (684), so that the connecting rod (686) pulls the second piston (687) to move upward.

8. The rubber strainer driven by a gear pump according to claim 7, characterized in that: A rubber pad is bonded to the bottom of the inner cavity of the box body (681).

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