Paint cleaning fluid recovery device

Abstract

The invention discloses a paint cleaning fluid recovery device which comprises a heated tank body (1), a stirring mechanism (2), a driving mechanism (3) and a variable transmission mechanism (4) arranged between the stirring mechanism (2) and the driving mechanism (3), the variable transmission mechanism (4) comprises a first driven gear (42) and an intermediate gear (43) which are arranged on the mounting bracket (41); two ends of a rotating shaft (44) are inserted into the arc-shaped chutes (412a) and form sliding guide fit; the driving gear (31) is meshed with the intermediate gear (43), an elastic connecting part (45) is arranged between the wheel shaft (44) and the top plate (411), the intermediate gear (43) is meshed with the first driven gear (42) under the connection of the elastic connecting part (45), and the first driven gear (42) is connected with the stirring shaft (21). The paint cleaning liquid wastewater treatment device has the advantages that the paint cleaning liquid wastewater treatment effect is improved, a scale layer in the heating container is prevented from being formed, and the state of wastewater in a closed space can be reflected.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment equipment, and in particular relates to a paint cleaning liquid recovery device. Background Art

[0002] Paint cleaning fluid is used to clean the paint coating on the surface of equipment or workpieces. The cleaning process is: first use organic cleaning fluid to clean the paint, and then use water for secondary cleaning to make the equipment or workpiece meet the cleaning requirements. However, in the actual cleaning process, it is difficult to use a single cleaning fluid for cleaning, resulting in wastewater containing cleaning fluid, dissolved paint, water and some solid debris, which needs to be treated to meet the emission standards.

[0003] The commonly used treatment method is heating condensation, that is, heating the wastewater. The various substances contained in the wastewater have different boiling points. The temperature difference is used to heat the wastewater in sections, and the steam generated in different temperature sections is condensed to recover different substances. This method can effectively treat the wastewater, but at the end of the treatment process, the proportion of some solid impurities and some substances with higher boiling points mixed in the wastewater increases, which can easily form a scale layer in the heating container. The wastewater heating is in a closed space, and the state of the wastewater cannot be directly observed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems that the existing paint cleaning liquid wastewater treatment effect is poor, scale layer is easily formed and it is difficult to observe. A paint cleaning liquid recovery device is provided, which can improve the paint cleaning liquid wastewater treatment effect, effectively prevent the formation of scale layer in the heating container, and at the same time can also reflect the state of wastewater in the closed space.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A paint cleaning liquid recovery device comprises a heated tank body, on which are provided a stirring mechanism, a driving mechanism and a variable transmission mechanism arranged between the stirring mechanism and the driving mechanism, which are coordinated with each other and are used to change the transmission state of the driving part and the stirring part according to the change of the resistance encountered by the stirring mechanism.

[0006] The variable transmission mechanism includes a first driven gear and an intermediate gear arranged on a mounting bracket, the mounting bracket includes a horizontal top plate and two side plates vertically connected to the top plate, each side plate is provided with a corresponding arc-shaped slide groove, the middle part of the intermediate gear is rotatably matched with a rotating shaft, the two ends of the rotating shaft are respectively inserted into the two arc-shaped slide grooves and the two form a sliding guide match; The output end of the driving mechanism is connected to a driving gear, which meshes with the intermediate gear, and the center of the arc-shaped slide groove is located on the rotation axis of the driving gear, so that the intermediate gear can always mesh with the driving gear when moving along the slide groove; An elastic connection part is also provided between the two ends of the wheel shaft of the intermediate gear and the top plate. The intermediate gear and the first driven gear maintain a meshing state under the connection of the elastic connection part. The first driven gear is connected to the stirring shaft of the stirring mechanism, and the first driven gear, the intermediate gear and the driving gear are located in the same plane.

[0007] Furthermore, the elastic connection part includes an arc-shaped buckle plate that cooperates with the arc-shaped slide groove, the arc-shaped buckle plate is buckled on the end of the wheel axle, and a group of elastic connecting parts are connected between its upper part and the top plate, the side of the elastic connecting part close to the top plate is connected to the threaded rod through a fixing plate, the upper end of the threaded rod passes through the top plate and is connected to the adjusting nut, and the threaded rod and the adjusting nut are connected by threaded cooperation.

[0008] Furthermore, the stirring mechanism includes a stirring shaft, one end of which is connected to the middle part of the first driven gear and the other end is connected to a group of stirring blades distributed around the stirring shaft. The bottom of the heated tank body is set to an arc structure that matches the shape of the stirring blades. The stirring shaft transversely penetrates the heated tank body and is connected to the tank body stand outside the heated tank body. The stirring shaft rotates in coordination with the heated tank body.

[0009] Furthermore, the stirring blade is an arc-shaped structure with a middle portion bulging outward, and both ends are fixedly connected to the stirring shaft. All stirring blades are combined to form a spherical structure, and the outer contour of the spherical structure fits the bottom of the heated tank body to continuously clean the bottom of the tank body and avoid the formation of a scale layer.

[0010] Furthermore, the stirring mechanism also includes an annular support plate, which is arranged in the spherical structure formed by the stirring blade and is connected to the middle part of the stirring blade. The center of the annular support plate is located on the rotation axis of the stirring shaft, and the rotation axis of the stirring shaft is perpendicular to the plane where the annular support plate is located, so as to transmit and share the resistance exerted on the blade during stirring and improve the stability of the overall structure.

[0011] Furthermore, the heated tank body includes an upper semicircular top cover, a middle cylinder body and a lower semicircular tank bottom. A discharge pipe is connected below the semicircular tank bottom. A control valve is provided in the discharge pipe to discharge wastewater in the tank body in time.

[0012] Furthermore, the control valve is a ball valve having a valve core inside, the valve core being connected to a transmission rod, one end of which passes through the tank stand and is connected to the second driven gear, the second driven gear being connected between the two side plates and being located on the side of the intermediate gear away from the first driven gear, the second driven gear being also arranged on the moving stroke of the intermediate gear and there being intermittent meshing drive between the two.

[0013] Furthermore, the outside of the heated tank body is wrapped with a heating part, and the heating part includes a connected heating cylinder and an arc bottom. The shape of the heating cylinder is adapted to the cylinder body of the heated tank body, and the shape of the arc bottom is adapted to the semicircular tank bottom of the heated tank body. The lower end of the discharge pipe extends out of the heating part, and the control valve is located in the heating part, so that the rotating component in the control valve can be heated to a high temperature state, thereby reducing the resistance of the viscous wastewater to the rotation of the rotating component.

[0014] Furthermore, the heating part is an electric heating wire or a steam pipeline wound around the outside of the heated tank, or a water bath boiler.

[0015] Furthermore, the elastic connecting piece is made of rubber tendons or tension springs.

[0016] In the technical solution of the present invention, the power of the driving mechanism is transmitted to the stirring mechanism through the variable transmission mechanism, so that the stirring mechanism can rotate under the action of the driving mechanism. The tank body serves as a wastewater containing structure, and the purpose of heating the wastewater can be achieved by heating the tank body. When the wastewater is heated, the solvent contained in it will evaporate gradually, so that the viscosity of the wastewater will gradually increase, and the resistance caused to the stirring mechanism will also gradually increase. When it increases to a certain value, the state of the wastewater in the closed space can be reflected by observing the transmission state of the variable transmission mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a paint cleaning liquid recovery device according to the present invention; Figure 2 It is a front view of the paint cleaning liquid recovery device of the present invention; Figure 3 This is a diagram showing the internal structure of the paint cleaning liquid recovery device of the present invention; Figure 4 for Figure 3 A partial enlarged view of; Figure 5 for Figure 1 B is a partial enlarged view; Figure 6 for Figure 3 A partial enlarged view of C; Figure 7 It is a schematic diagram of the coordination among the variable transmission mechanism, the stirring mechanism and the driving mechanism of the present invention. DETAILED DESCRIPTION Example

[0018] In order to make the present invention more clear, a paint cleaning liquid recovery device of the present invention is further described below in conjunction with the accompanying drawings. The specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0019] See also Figure 1 and Figure 2 A paint cleaning liquid recovery device comprises a heated tank body 1 for containing waste water, a stirring mechanism 2 arranged in the heated tank body 1 and a driving mechanism 3 for driving the stirring mechanism 2 to rotate, a variable transmission mechanism 4 is arranged between the driving mechanism 3 and the stirring mechanism 2, and the variable transmission mechanism 4 can change the transmission state of the driving part and the stirring part according to the change of the resistance encountered by the stirring mechanism.

[0020] See also Figure 1 , Figure 3 , Figure 4 and Figure 5 The variable transmission mechanism 4 includes a first driven gear 42 and an intermediate gear 43 arranged on a mounting bracket 41. The mounting bracket 41 includes a horizontal top plate 411 and two side plates 412 vertically connected to the top plate 411. Each side plate 412 is provided with a corresponding arc-shaped slide groove 412a. The middle part of the intermediate gear 43 is rotatably matched with a rotating shaft 44. The two ends of the rotating shaft 44 are respectively inserted into two arc-shaped slide grooves 412a and the two form a sliding guide match; The output end of the driving mechanism 3 is connected to a driving gear 31, which meshes with the intermediate gear 43, and the center of the arc-shaped slide groove 412a is located on the rotation axis of the driving gear 31, so that the intermediate gear 43 can always mesh with the driving gear 31 when moving along the slide groove; An elastic connecting portion 45 is also provided between the two ends of the wheel shaft 44 of the intermediate gear 43 and the top plate 411. The intermediate gear 43 and the first driven gear 42 are kept in meshing state under the connection of the elastic connecting portion 45. The first driven gear 42 is connected to the stirring shaft 21 of the stirring mechanism 2, and the first driven gear 42, the intermediate gear 43 and the driving gear 31 are located in the same plane.

[0021] When in use, the driving gear 31 and the first driven gear 42 are in a relatively fixed state on the mounting bracket 41, that is, they can rotate at a fixed position, and the intermediate gear 43 can move along the arcuate slide groove 412a to approach or move away from the first driven gear 42 by cooperating with the arcuate slide groove 412a. Since the center of the arcuate slide groove 412a is located on the rotation axis of the driving gear 31, the intermediate gear 43 will move around the rotation axis of the driving gear 31 in the process of approaching or moving away from the first driven gear 42, that is, it can maintain a state of meshing with the driving gear 31 during the movement; In addition, the axle 44 serves as a sliding connection part of the intermediate gear 43 in the arc-shaped slide groove 412a. The two ends of the axle 44 are connected to the top plate 411 through the elastic connection part 45, and the elastic force of the elastic connection part 45 pulls the intermediate gear 43 toward the first driven gear 42, so that the intermediate gear 43 and the first driven gear 42 remain in a meshing state.

[0022] In the initial stage of wastewater heating, the proportion of solvent in the wastewater is high, the viscosity of the wastewater is low, and the resistance to the stirring mechanism 2 is small. Under the elastic force of the elastic connection part 45, the intermediate gear 43 and the first driven gear 42 are in a fully meshed state; in the final stage of wastewater heating, the solvent in the wastewater is heated and evaporated, causing the viscosity of the wastewater to increase, and the resistance to the stirring mechanism 2 will also increase. The power input of the stirring mechanism 2 relies on the first driven gear 42. Since the intermediate gear 43 is meshed with the first driven gear 42 by the elastic connection part 45, after the resistance of the stirring mechanism 2 increases to a certain extent, a tooth skipping phenomenon will occur between the intermediate gear 43 and the first driven gear 42, that is, the state of the wastewater is fed back through the transmission state.

[0023] See also Figure 4 , Figure 5 and Figure 7 The elastic connection part 45 includes an arc-shaped buckle plate 451 matched with the arc-shaped slide groove 412a, the arc-shaped buckle plate 451 is buckled on the end of the wheel shaft 44, and a group of elastic connecting members 452 are connected between the upper part of the arc-shaped buckle plate 451 and the top plate 411, and the side of the elastic connecting member 452 close to the top plate 411 is connected to the threaded rod 454 through the fixing plate 453, and the upper end of the threaded rod 454 passes through the top plate 411 and is connected to the adjusting nut 455, and the threaded rod 454 and the adjusting nut 455 are connected by threaded matching; The arc-shaped gusset plate 451 is used as a rigid supporting structure, and the elastic connector 452 is used as a connecting structure between the arc-shaped gusset plate 451 and the top plate 411, which can be made of rubber tendons or tension springs. The arc-shaped gusset plate 451 keeps applying tension to the axle 44 through the two elastic connectors 452, even if the intermediate gear 43 keeps being meshed with the first driven gear 42; The axle 44 can be rotatably matched with the intermediate gear 43, or the axle 44 can be fixedly connected with the intermediate gear 43. When the axle 44 is fixedly connected with the intermediate gear 43, the axle 44 will also be in a rotating state during the transmission process. Then, a bearing 47 can be sleeved on the axle 44, and the bearing 47 can be used as a supporting structure between the arc-shaped gusset plate 451 and the axle 44. In addition, the adjusting nut 455 can be rotated on the threaded rod 454 to adjust the length of the threaded rod 454 extending above the top plate 411, that is, the degree to which the elastic connecting member 452 is stretched can be adjusted. Different degrees of stretching will have different pulling forces to adjust the pulling force applied by the elastic connecting member 452 to the intermediate gear 43, so as to achieve the purpose of adjusting the limit value of the feedback of the resistance encountered by the stirring mechanism 2.

[0024] In this embodiment, the upper ends of the two elastic connectors 452 at both ends of each arc-shaped buckle plate 451 are connected to a plate body and are respectively connected to the two ends of the plate body. The lower end of the threaded rod 454 is fixedly connected to the middle of the plate body, that is, the plate body can be lifted by moving the threaded rod 454, and finally the two elastic connectors 452 have a synchronous and uniform prompt effect.

[0025] See also Figure 3 , Figure 4 and Figure 7 The stirring mechanism 2 includes a stirring shaft 21, one end of which is connected to the middle of the first driven gear 42, and the other end is connected to a group of stirring blades 22 distributed around the stirring shaft 21. The bottom of the heated tank body 1 is set to an arc structure that matches the shape of the stirring blades 22. The stirring shaft 21 horizontally penetrates the heated tank body 1 and is connected to the tank body stand 9 outside the heated tank body 1. The stirring shaft 21 rotates in coordination with the heated tank body 1; The stirring blades 22 are arc-shaped structures with the middle part bulging outward, and both ends are fixedly connected to the stirring shaft 21. All stirring blades 22 are combined to form a spherical structure. The outer contour of the spherical structure fits the bottom of the heated tank body 1. During the rotation process, it can fully contact the bottom of the heated tank body 1, continuously clean the bottom of the heated tank body 1, avoid the formation of a scale layer on the bottom of the tank, and can maximize the feedback of the resistance formed by the adhesion between the wastewater and the bottom of the tank.

[0026] In this embodiment, the stirring mechanism 2 further includes an annular support plate 23, which is disposed in the spherical structure formed by the stirring blades 22 and is connected to the middle of the stirring blades 22. The center of the annular support plate 23 is located on the rotation axis of the stirring shaft 21, and the rotation axis of the stirring shaft 21 and the plane where the annular support plate 23 are located are perpendicular to each other. The resistance to the multiple stirring blades 22 can be transmitted during the rotation process, so that the multiple stirring blades 22 share the rotation resistance, thereby improving the stability of the overall structure. When the stirring blade 22 rotates with the stirring shaft 21, the direction of the resistance it encounters is opposite to the direction of rotation. The center of the annular support plate 23 is located on the rotation axis of the stirring shaft 21, that is, the annular support plate 23 is coaxial with the stirring shaft 21, and the resistance formed by the stirring blade 22 through the annular support plate 23 can be evenly transmitted and distributed.

[0027] See also Figure 3 The heated tank body 1 includes an upper semicircular top cover 1a, a middle barrel 1b and a lower semicircular tank bottom 1c. A discharge pipe 5 is connected below the semicircular tank bottom 1c. A control valve 6 is arranged inside the discharge pipe 5. The control valve 6 is used to control the opening state of the discharge pipe. When the waste water in the heated tank body 1 evaporates to a certain extent, it can be discharged through the discharge pipe 5. The discharge pipe 5 can be connected to the lowest point of the bottom of the heated tank body 1 to discharge the waste water out of the tank body as much as possible. See also Figure 6 The control valve 6 is a ball valve, and a valve core 61 is arranged inside the control valve 6. The valve core 61 is connected to a transmission rod 7. One end of the transmission rod 7 passes through the tank stand 9 and is connected to the second driven gear 46. The second driven gear 46 is connected between the two side plates 412 and is located on the side of the intermediate gear 43 away from the first driven gear 42. The second driven gear 46 is also arranged on the moving stroke of the intermediate gear 43 and there is an intermittent meshing drive between the two. When the wastewater in the heated tank body 1 is at the final stage of heating and there is a tooth jump phenomenon between the intermediate gear 43 and the first driven gear 42, the intermediate gear 43 will intermittently drive the second driven gear 46 to rotate, that is, the transmission rod 7 and the valve core 61 are driven to rotate through the second driven gear 46, so that the discharge pipe 5 is in an open or intermittently open state, prompting the operator.

[0028] See also Figure 1 , Figure 2 and Figure 3 The outside of the heated tank body 1 is wrapped with a heating part 8, which is an electric heating wire or steam pipeline wound around the outside of the heated tank body 1, or a water bath boiler. The heating part 8 includes a connected heating cylinder 8a and a circular arc bottom 8b. The shape of the heating cylinder 8a is adapted to the barrel 1b of the heated tank body 1, and the shape of the circular arc bottom 8b is adapted to the semicircular tank bottom 1c of the heated tank body 1. The lower end of the discharge pipe 5 extends out of the heating part 8, and the control valve 6 is located in the heating part 8, so that the rotating component in the control valve 6 is heated to a high temperature state, thereby reducing the resistance of the viscous wastewater to the rotation of the rotating component.

[0029] In the present invention, the variable transmission mechanism 4 is used to transmit the power of the driving part to the stirring mechanism 2, so that the stirring mechanism 2 can rotate under the action of the driving part. The heated tank body 1 serves as a wastewater containing structure, and the purpose of heating the wastewater can be achieved by heating the tank body. After the wastewater is heated, the solvent contained in it will evaporate gradually, so that the viscosity of the wastewater will gradually increase, and the resistance caused to the stirring mechanism 2 will also gradually increase. When it increases to a certain value, the state of the wastewater in the closed space can be reflected by observing the transmission state of the variable transmission mechanism 4.

[0030] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. A paint cleaning liquid recovery device, comprising a heated tank (1), characterized in that: The heated tank body (1) is provided with a stirring mechanism (2), a driving mechanism (3) and a variable transmission mechanism (4) arranged between the stirring mechanism (2) and the driving mechanism (3) which cooperate with each other; The variable transmission mechanism (4) comprises a first driven gear (42) and an intermediate gear (43) arranged on a mounting bracket (41); the mounting bracket (41) comprises a horizontal top plate (411) and two side plates (412) vertically connected to the top plate (411); each side plate (412) is provided with a corresponding arc-shaped slide groove (412a); a rotating shaft (44) is rotatably matched in the middle of the intermediate gear (43); two ends of the rotating shaft (44) are respectively inserted into two arc-shaped slide grooves (412a) and the two form a sliding guide match; The output end of the driving mechanism (3) is connected to a driving gear (31), the driving gear (31) and the intermediate gear (43) are meshed with each other, and the center of the arc-shaped sliding groove (412a) is located on the rotation axis of the driving gear (31); An elastic connection portion (45) is further provided between the two ends of the wheel shaft (44) of the intermediate gear (43) and the top plate (411); the intermediate gear (43) and the first driven gear (42) are kept in a meshing state under the connection of the elastic connection portion (45); the first driven gear (42) is connected to the stirring shaft (21) of the stirring mechanism (2); and the first driven gear (42), the intermediate gear (43) and the driving gear (31) are located in the same plane.

2. The paint cleaning liquid recovery device according to claim 1, characterized in that: The elastic connection portion (45) comprises an arc-shaped buckle plate (451) matched with the arc-shaped slide groove (412a); the arc-shaped buckle plate (451) is buckled on the end of the wheel shaft (44); and a group of elastic connection members (452) are connected between the upper part of the arc-shaped buckle plate and the top plate (411); the side of the elastic connection member (452) close to the top plate (411) is connected to the threaded rod (454) through the fixing plate (453); the upper end of the threaded rod (454) passes through the top plate (411) and is connected to the adjusting nut (455); the threaded rod (454) and the adjusting nut (455) are connected by threaded matching.

3. The paint cleaning liquid recovery device according to any one of claims 1 or 2, characterized in that: The stirring mechanism (2) comprises a stirring shaft (21), one end of which is connected to the middle part of the first driven gear (42), and the other end of which is connected to a group of stirring blades (22) distributed around the stirring shaft (21). The bottom of the heated tank body (1) is configured as an arc structure that matches the shape of the stirring blades (22). The stirring shaft (21) passes through the heated tank body (1) transversely and is connected to a tank body stand (9) outside the heated tank body (1). The stirring shaft (21) and the heated tank body (1) are rotatably matched.

4. The paint cleaning liquid recovery device according to claim 3 is characterized in that: The stirring blade (22) is an arc-shaped structure with a central portion protruding outward, and both ends of the stirring blade are fixedly connected to the stirring shaft (21). All stirring blades (22) are combined to form a spherical structure, and the outer contour of the spherical structure fits the bottom of the heated tank body (1).

5. The paint cleaning liquid recovery device according to claim 4, characterized in that: The stirring mechanism (2) further comprises an annular support plate (23), the annular support plate (23) being arranged in the spherical structure formed by the stirring blade (22) and being connected to the middle portion of the stirring blade (22), the center of the annular support plate (23) being located on the rotation axis of the stirring shaft (21), and the rotation axis of the stirring shaft (21) and the plane where the annular support plate (23) is located being perpendicular to each other.

6. The paint cleaning liquid recovery device according to any one of claims 1 or 2, characterized in that: The heated tank body (1) comprises an upper semicircular top cover (1a), a middle cylindrical body (1b) and a lower semicircular tank bottom (1c). A discharge pipe (5) is connected below the semicircular tank bottom (1c), and a control valve (6) is provided inside the discharge pipe (5).

7. The paint cleaning liquid recovery device according to claim 6, characterized in that: The control valve (6) is a ball valve, and a valve core (61) is provided inside the control valve (6). The valve core (61) is connected to a transmission rod (7). One end of the transmission rod (7) passes through the tank stand (9) and is connected to the second driven gear (46). The second driven gear (46) is connected between the two side plates (412) and is located on the side of the intermediate gear (43) away from the first driven gear (42). The second driven gear (46) is also provided on the moving stroke of the intermediate gear (43) and there is an intermittent meshing drive between the two.

8. The paint cleaning liquid recovery device according to claim 6, characterized in that: The heated tank body (1) is wrapped with a heating portion (8) on the outside. The heating portion (8) comprises a connected heating cylinder (8a) and a circular arc bottom (8b). The shape of the heating cylinder (8a) matches the cylinder body (1b) of the heated tank body (1), and the shape of the circular arc bottom (8b) matches the semicircular tank bottom (1c) of the heated tank body (1). The lower end of the discharge pipe (5) extends out of the heating portion (8), and the control valve (6) is located in the heating portion (8).

9. The paint cleaning liquid recovery device according to claim 8, characterized in that: The heating part (8) is an electric heating wire or a steam pipeline wound around the outside of the heated tank (1), or is a water bath boiler.

10. The paint cleaning liquid recovery device according to claim 2, characterized in that: The elastic connecting piece (452) is made of a rubber tendon or a tension spring.

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