Paint feeding and flow monitoring and metering device and method

Abstract

The invention provides a paint feeding and flow monitoring and metering device and method. A metering device for paint feeding and flow monitoring mainly comprises a metering piston rod, a pump body, a metering piston cylinder, an inlet valve body, a pressure sensor, a detection ring, a stroke sensor, a position sensor and a ruler. The oil paint metering device is characterized in that oil paint is sucked in through an inlet valve body and is output from an outlet through an outlet valve in a piston, the section area S1 of the metering piston cylinder is two times of the annular section area S2 after the piston is subtracted from the metering piston cylinder, the oil paint amount is in direct proportion to the stroke of the metering piston, and the maximum volume V1 of the oil paint sucked in by the metering piston cylinder is two times of the annular volume V2. The paint feeding flow monitoring device has the function of monitoring the displacement, the movement direction and the cycle index of the piston, and the paint feeding flow is monitored and metered at any time by monitoring the up-down cycle index of the piston and the direction and the movement stroke of the piston, so that accurate paint feeding is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of paint flow metering, and in particular to a paint feeding and flow monitoring and metering device and method. Background Art

[0002] At present, in the manufacturing process of steel structures such as ships and marine engineering, the surface of the steel plate needs to be sprayed with paint for corrosion protection. The film thickness of the anti-corrosion coating must meet the process design requirements. If the film thickness is too thick, the paint will be seriously wasted. Especially for robot spraying production, the film thickness needs to be precisely controlled. The existing paint metering equipment has a low working pressure and cannot meet the metering requirements of 10MPa-50MPa, and the paint flow metering device has a poor metering effect on high-viscosity paint. Summary of the invention

[0003] The purpose of the present invention is to provide a paint feeding and flow monitoring and metering device and method. The invention example adopts continuous feeding and contactless paint flow monitoring and metering, overcomes the hardware requirements of paint viscosity on metering equipment, meets the high-pressure transportation metering needs, and can realize digital paint metering.

[0004] The embodiment of the present invention provides a paint flow monitoring and metering device, comprising: a metering piston rod 1, a pump body 2, a metering piston cylinder 3, an inlet valve 4, a position sensor 5, a stroke displacement sensor 6, a pressure sensor 7, a detection ring 8 and an outlet valve 9;

[0005] The paint delivery amount is measured by detecting the movement direction of the piston and the operating parameters per unit time using the stroke displacement sensor 6 .

[0006] In some embodiments, the cross-sectional area S1 of the metering piston cylinder 3 is twice the annular cross-sectional area S2 formed by subtracting the cross-sectional area of ​​the metering piston cylinder 3 from the cross-sectional area of ​​the metering piston rod 1 .

[0007] In some embodiments, when the metering piston rod 1 moves downward, the inlet valve 4 is closed, and the paint is output outward through the outlet valve 9, and the output volume is V2. At the same time, the volume V2 of paint is stored in the annular space between the metering piston rod 1 and the metering piston cylinder 3 as a reserve for the next output.

[0008] In some embodiments, when the device is working, the metering piston rod 1 moves upward, and the paint enters the metering piston cylinder 3 through the inlet valve 4. When the metering piston rod 1 reaches the maximum position, the volume of the paint sucked in reaches the maximum volume V1.

[0009] In some embodiments, the metering piston rod 1 moves up and down repeatedly to achieve continuous paint supply.

[0010] In some embodiments, the amount of paint sucked in and output by the device is proportional to the stroke of the metering piston rod 1, that is, the maximum volume V1 of paint sucked in by the metering piston cylinder 3 when the metering piston rod 1 reaches the maximum position at the top is twice the annular volume V2 when the metering piston rod 1 reaches the minimum position at the bottom.

[0011] In some embodiments, the pump body 2 includes: a detection plug 201 , a sealing plug 202 and an upper seal 203 .

[0012] In some embodiments, the inlet valve 4 includes: a limiting ring seat 401 , an inlet valve seat 402 , a valve seat seal 403 and an inlet steel ball 404 .

[0013] In some embodiments, the outlet valve 9 includes: a steel ball 901 , a ball valve seat 902 , an outlet valve body 903 and a valve body sealing assembly 904 .

[0014] An embodiment of the present invention provides a paint flow monitoring and metering method, using a paint flow monitoring and metering device as described in any of the above embodiments, the method comprising:

[0015] After the system is turned on, the travel displacement sensor 6 senses the movement direction and travel of the metering piston rod 1, and the pressure sensor 7 detects the paint delivery pressure in the metering piston cylinder 3;

[0016] The pressure sensor 7 transmits the internal pressure of the metering piston cylinder 3 to the monitoring system software, and determines that the paint pressure in the metering piston cylinder 3 reaches the set value. When the pressure reaches the set value, the monitoring metering system control software determines whether the device delivery is effective;

[0017] The monitoring system reads the piston running direction and running stroke Ls or Lx, and calls the corresponding paint metering algorithm according to the running direction, among which, the downward running flow algorithm 1: Vp = S1-S2×Lx, the upward running flow algorithm 2: Vp = S2×Ls;

[0018] Each effective transmission accumulates the value V=V+Vp, and the intermediate transfer variable is cleared to Vp=0.

[0019] The beneficial effects of the above embodiments of the present invention include:

[0020] 1. The paint feeding and flow monitoring and metering device can realize continuous feeding, continuous monitoring and metering.

[0021] 2. The paint feeding and flow monitoring and metering device has a wide applicable range of feeding pressure, with a pressure of 0-50MPa.

[0022] 3. A monitoring and metering method for a paint feeding and flow monitoring and metering device, which can realize the feeding of high solid content (up to 100%) and high viscosity paint, with a maximum viscosity of 20,000 cp. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings illustrate generally, by way of example and not limitation, various embodiments discussed herein.

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the internal structure and operation monitoring of an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the structure of an inlet valve according to an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the outlet valve structure;

[0028] Figure 5 Traffic metering algorithm flow.

[0029] Explanation of symbols:

[0030] 1-metering piston rod, 2-pump body, 3-metering piston cylinder, 4-inlet valve, 5-position sensor, 6-stroke displacement sensor, 7-pressure sensor, 8-detection ring, 9-outlet valve, 401-limiting ring seat, 402-inlet valve seat, 403-valve seat seal, 404-inlet steel ball. 901-outlet steel ball, 902-outlet valve seat seal, 903-outlet valve body, 904-valve body seal assembly. DETAILED DESCRIPTION

[0031] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

[0032] In the embodiments of the present application, it should be noted that, unless otherwise specified and limited, the term "connection" should be understood in a broad sense. For example, it can be an electrical connection or a connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0033] It should be noted that the terms "first\second\third" involved in the embodiments of the present application are only used to distinguish similar objects, and do not represent a specific order for the objects. It is understandable that the specific order or sequence of "first\second\third" can be interchanged where permitted. It should be understood that the objects distinguished by "first\second\third" can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0034] An embodiment of the present invention provides a paint flow monitoring and metering device, comprising: a metering piston rod 1, a pump body 2, a metering piston cylinder 3, an inlet valve 4, a position sensor 5, a stroke displacement sensor 6, a pressure sensor 7, a detection ring 8 and an outlet valve 9.

[0035] The paint delivery amount is measured by detecting the movement direction of the piston and the operating parameters per unit time using the stroke displacement sensor 6 .

[0036] In some embodiments, the cross-sectional area S1 of the metering piston cylinder 3 is twice the annular cross-sectional area S2 formed by subtracting the cross-sectional area of ​​the metering piston rod 1 from the cross-sectional area of ​​the metering piston cylinder 3 .

[0037] In some embodiments, when the metering piston rod 1 moves downward, the inlet valve 4 is closed, and the paint is output outward through the outlet valve 9, and the output volume is V2. At the same time, the volume V2 of paint is stored in the annular space between the metering piston rod 1 and the metering piston cylinder 3 as a reserve for the next output.

[0038] In some embodiments, when the device is working, the metering piston rod 1 moves upward, and the paint enters the metering piston cylinder 3 through the inlet valve 4. When the metering piston rod 1 reaches the maximum position, the volume of the paint sucked in reaches the maximum volume V1.

[0039] In some embodiments, the metering piston rod 1 moves up and down repeatedly to achieve continuous supply of paint.

[0040] In some embodiments, the amount of paint sucked in and output by the device is proportional to the stroke of the metering piston rod 1, that is, the maximum volume V1 of paint sucked in by the metering piston cylinder 3 when the metering piston rod 1 reaches the maximum position at the top is twice the annular volume V2 when the metering piston rod 1 reaches the minimum position at the bottom.

[0041] In some embodiments, Figure 2 As shown, the pump body 2 includes: a detection plug 201, a sealing plug 202 and an upper seal 203.

[0042] In some embodiments, Figure 3 As shown, the inlet valve 4 includes: a limiting ring seat 401, an inlet valve seat 402, a valve seat seal 403 and an inlet steel ball 404.

[0043] In some embodiments, Figure 4 As shown, the outlet valve 9 includes: a steel ball 901 , a ball valve seat 902 , an outlet valve body 903 and a valve body sealing assembly 904 .

[0044] An embodiment of the present invention provides a paint flow monitoring and metering method, using a paint flow monitoring and metering device as in any of the above embodiments, the method comprising:

[0045] After the system is turned on, the travel displacement sensor 6 senses the movement direction and travel of the metering piston rod 1 , and the pressure sensor 7 detects the paint delivery pressure in the metering piston cylinder 3 .

[0046] The pressure sensor 7 transmits the internal pressure of the metering piston cylinder 3 to the monitoring system software, and determines that when the paint pressure in the metering piston cylinder 3 reaches the set value, the monitoring metering system control software determines whether the device delivery is effective.

[0047] The monitoring system reads the piston running direction and running stroke Ls or Lx, and calls the corresponding paint metering algorithm according to the running direction, among which, the downward running flow algorithm 1: Vp = S1-S2×Lx, and the upward running flow algorithm 2: Vp = S2×Ls.

[0048] Each effective transmission accumulates the value V=V+Vp, and the intermediate transfer variable is cleared to Vp=0.

[0049] The embodiment of the present invention provides a paint flow monitoring and metering device, including a metering piston rod, a pump body, a metering piston cylinder, an inlet valve body, a pressure sensor, a detection ring, a stroke sensor, a position sensor, and a scale. The stroke sensor is used to accurately measure the delivery amount of paint by detecting the movement direction of the piston and the operating parameters per unit time.

[0050] An embodiment of the present invention is a paint flow monitoring and metering device, in which the total cross-section S1 of the metering piston cylinder is twice the annular cross-section S2 between the cylinder body and the piston, that is, the volume V1 when the piston reaches the maximum position at the top is twice the annular volume V2 when the piston reaches the minimum position at the bottom.

[0051] In the embodiment of the present invention, a paint flow monitoring and metering device is provided. When the piston moves downward to the minimum position, paint with a volume of V1 is output to a volume of V2 through the internal ball valve, and paint with a volume of V2 is stored in the annular area between the piston and the metering piston cylinder for the next delivery. The above process is repeated indefinitely to achieve continuous supply of paint.

[0052] The embodiment of the present invention is a detection method for a paint flow monitoring and metering device, which records the number of piston operation and the running direction through a detection ring and a sensor, uses a stroke sensor to accurately obtain the piston operation stroke, and uses a scale and the cross-section of the piston to measure the paint delivery amount.

[0053] The embodiment of the present invention provides a paint feeding and flow monitoring and metering device, and the applicable range of the feeding pressure is wide, and the pressure is 0-50MPa.

[0054] The embodiment of the present invention provides a paint feeding and flow monitoring and metering device, and the applicable viscosity range is as wide as 0-20000cp.

[0055] The embodiment of the present invention provides a monitoring and metering method for a paint feeding and flow monitoring and metering device, which can realize the feeding of high-solid content and high-viscosity paint.

[0056] The embodiment of the present invention provides a metering device for paint feeding and flow monitoring, which includes a metering piston rod, a pump body, a metering piston cylinder, an inlet valve body, a pressure sensor, a detection ring, a stroke sensor, a position sensor, and a scale. It is characterized in that the paint is sucked in through the inlet valve body and output from the outlet through the outlet valve inside the piston. The cross-sectional area S1 of the metering piston cylinder is twice the annular cross-sectional area S2 after the piston is subtracted from the metering piston cylinder. The amount of paint is proportional to the stroke of the piston, that is, the maximum volume V1 of the paint sucked in by the metering piston cylinder when the piston reaches the maximum position at the top is twice the annular volume V2 when the piston reaches the minimum position at the bottom. The paint feeding and flow monitoring device monitors the feeding flow of the metered paint at all times by monitoring the number of up and down cycles of the piston and the movement stroke Ls or Lx of the piston, thereby realizing accurate paint feeding.

[0057] The embodiment of the present invention also provides a monitoring and metering method, based on the monitoring and metering device of the above embodiment, such as Figure 5 As shown, the steps of the method are as follows:

[0058] Step 1: After the system is turned on, the stroke and displacement sensing unit 6 senses the movement direction and stroke of the metering piston rod 1 , and the pressure sensor 7 detects the paint delivery pressure in the metering piston cylinder 3 .

[0059] Step 2, the pressure sensor 7 transmits the internal pressure of the metering piston cylinder 3 to the monitoring system software, and determines that when the paint pressure in the metering piston cylinder 3 reaches the set value, the monitoring metering system control software determines whether the device delivery is effective.

[0060] Step 3, the monitoring system reads the piston running direction and running stroke Ls or Lx, and calls the corresponding paint metering algorithm according to the running direction. Downward running flow algorithm 1: Vp = (S1-S2) × Lx, upward running flow algorithm 2: Vp = S2 × Ls.

[0061] Step 4: For each effective transmission, the value is accumulated V=V+Vp, and the intermediate transfer variable is cleared to Vp=0.

[0062] The steps of a monitoring and metering method for a paint feeding and flow monitoring and metering device are as follows: Step 1, after the system is turned on, the stroke and displacement sensing unit 6 senses the movement direction and stroke of the metering piston rod 1, and the pressure sensor 7 detects the paint delivery pressure in the metering piston cylinder 3. Step 2, the pressure sensor 7 transmits the internal pressure of the metering piston cylinder 3 to the monitoring system software, and determines that when the paint pressure in the metering piston cylinder 3 reaches the set value, the monitoring and metering system control software determines whether the device delivery is effective. Step 3, the monitoring system reads the piston running direction and running stroke Ls or Lx, and calls the corresponding paint metering algorithm according to the running direction. Downward running flow algorithm 1: Vp = (S1-S2) × Lx, upward running flow algorithm 2: Vp = S2 × Ls. Step 4, when the stroke of the metering piston rod 1 reaches the maximum / minimum limit position, the metering process ends and prepares for the next metering. Each effective delivery accumulates the value V = V + Vp, and the intermediate transfer variable is cleared to zero, that is, Vp = 0. Step 5: During the metering process, two pressure tests will be performed. If the delivery pressure is lower than the set pressure range, an alarm will be issued to prevent the problem of empty stroke due to insufficient material supply. If two pressure alarms occur during a metering process, the metering is considered invalid and the intermediate variable Vp = 0.

[0063] The technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0064] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A paint flow monitoring and metering device, characterized in that: include: A metering piston rod (1), a pump body (2), a metering piston cylinder (3), an inlet valve (4), a position sensor (5), a stroke displacement sensor (6), a pressure sensor (7), a detection ring (8) and an outlet valve (9); By detecting the movement direction of the piston and the operating parameters per unit time, the delivery amount of the paint is measured using a stroke displacement sensor (6).

2. The paint flow monitoring and metering device according to claim 1 is characterized in that: The cross-sectional area S1 of the metering piston cylinder (3) is twice the annular cross-sectional area S2 formed by subtracting the cross-sectional area of ​​the metering piston rod (1) from the cross-sectional area of ​​the metering piston cylinder (3).

3. The paint flow monitoring and metering device according to claim 2 is characterized in that: When the metering piston rod (1) moves downward, the inlet valve (4) is closed, and the paint is discharged outward through the outlet valve (9), and the output volume is V2. At the same time, the annular space between the metering piston rod (1) and the metering piston cylinder (3) stores paint of volume V2 to prepare for the next output.

4. The paint flow monitoring and metering device according to claim 3 is characterized in that: When the device is working, the metering piston rod (1) moves upward, and the paint enters the metering piston cylinder (3) through the inlet valve (4). When the metering piston rod (1) reaches the maximum position, the volume of the paint sucked in reaches the maximum volume V1.

5. The paint flow monitoring and metering device according to claim 3 is characterized in that: The metering piston rod (1) moves up and down repeatedly to achieve continuous supply of paint.

6. The paint flow monitoring and metering device according to claim 3 is characterized in that: The amount of paint sucked in and discharged by the device is proportional to the stroke of the metering piston rod (1), that is, the maximum volume V1 of paint sucked in by the metering piston cylinder (3) when the metering piston rod (1) reaches the maximum position at the top is twice the annular volume V2 when the metering piston rod (1) reaches the minimum position at the bottom.

7. The paint flow monitoring and metering device according to claim 1, characterized in that: The pump body (2) comprises: a detection cock (201), a sealing cock (202) and an upper seal (203).

8. The paint flow monitoring and metering device according to claim 7, characterized in that: The inlet valve (4) comprises: a limiting ring seat (401), an inlet valve seat (402), a valve seat seal (403) and an inlet steel ball (404).

9. The paint flow monitoring and metering device according to claim 8, characterized in that: The outlet valve (9) comprises: a steel ball (901), a ball valve seat (902), an outlet valve body (903) and a valve body sealing assembly (904).

10. A paint flow monitoring and metering method, characterized in that: The paint flow monitoring and metering device according to any one of claims 1 to 9 is used, wherein the method comprises: After the system is turned on, the travel displacement sensor (6) senses the movement direction and travel of the metering piston rod (1), and the pressure sensor (7) detects the paint delivery pressure in the metering piston cylinder (3); The pressure sensor (7) transmits the internal pressure of the metering piston cylinder (3) to the monitoring system software, and determines that when the paint pressure in the metering piston cylinder (3) reaches a set value, the monitoring metering system control software determines whether the device delivery is effective. The monitoring system reads the piston running direction and running stroke Ls or Lx, and calls the corresponding paint metering algorithm according to the running direction, where the downward running flow algorithm 1: Vp = (S1-S2) × Lx, and the upward running flow algorithm 2: Vp = S2 × Ls; Each effective transmission accumulates the value V=V+Vp, and the intermediate transfer variable is cleared to zero, Vp=0.

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