Weighing type slurry density measuring on-line device

Abstract

The invention relates to the technical field of slurry density measuring devices, and particularly discloses a weighing type slurry density measuring on-line device which comprises a measuring assembly, a cleaning assembly and a sample injection assembly, and the sample injection assembly is located above the measuring assembly; the measuring assembly comprises a measuring tank, a weighing device, a liquid discharging pipe, a measuring pipe, an infrared sensor, a second supporting frame and a conveying pipe, the measuring tank is fixedly connected to the upper portion of the weighing device, the liquid discharging pipe is fixedly connected to the lower portion of the measuring tank, a valve is arranged on the liquid discharging pipe, and the second supporting frame is fixedly connected to one side of the lower portion of the measuring tank. The slurry density can be measured in a slurry weighing and volume conversion mode, the accuracy is high, and errors are not prone to being generated due to the influence of medium properties and the environment.

Description

Technical Field

[0001] The invention relates to the technical field of slurry density measuring devices, and in particular to an online device for measuring slurry density by weighing. Background Art

[0002] Slurry density measurement device is a device used to measure the density of slurry, usually a mixture of liquid and solid particles. Slurry is widely used in many industrial fields, such as chemical, mining, food processing, pharmaceutical and papermaking, etc. Density measurement is crucial for monitoring production processes, optimizing process control and quality management.

[0003] The existing technology still has the following areas for improvement: Currently, the slurry density is mainly measured using a differential pressure density measuring device, which usually relies on the pressure difference of the fluid to infer the density. For slurries containing a large number of bubbles or solid particles, this measurement method is prone to errors. Bubbles may cause unstable or fluctuating pressure measurements, and solid particles may affect the accuracy of the pressure difference. In addition, this device is also easily affected by environmental interference, such as changes in temperature and pressure, which may cause errors in the measurement results. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a weighing-type online device for measuring slurry density, which can measure slurry density by slurry weighing and volume conversion, has high accuracy, and is not easily affected by medium properties and environment to produce errors.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A weighing type on-line device for measuring slurry density, comprising a measuring component, a cleaning component and a sampling component, wherein the sampling component is located above the measuring component; The measuring assembly includes a measuring tank, a weighing device, a drain pipe, a measuring tube, an infrared sensor, a second support frame and a delivery pipe, wherein the measuring tank is fixedly connected to the top of the weighing device, the drain pipe is fixedly connected to the bottom of the measuring tank, a valve is provided on the drain pipe, the second support frame is fixedly connected to one side below the measuring tank, the measuring tube is fixedly connected to the top of the second support frame, the infrared sensor is fixedly connected to the top of the measuring tube, and the delivery pipe connects the measuring tank and the measuring tube; The cleaning assembly includes a first support frame, a motor, a support plate, a connecting rod, a brush and a cleaning frame, wherein the first support frame is fixedly connected to the top of the support plate, the connecting rod is fixedly connected to the brush, the brush is located inside the measuring tank, and the cleaning frame is fixedly connected to the inside of the measuring tank; The sampling assembly includes a water pipe, a sample tube, a first solenoid valve, a second solenoid valve and a liquid inlet pipe. The water pipe is connected to the liquid inlet pipe through the second solenoid valve, and the sample tube is connected to the liquid inlet pipe through the first solenoid valve.

[0006] Preferably, a sprayer is provided at the bottom of the liquid inlet pipe, and the sprayer is located inside the measuring tank.

[0007] Preferably, the first support frame is U-shaped, a displacement frame, a screw rod and a displacement block are arranged on the inner side of the first support frame, and the displacement frame is fixedly connected to the top of the support plate.

[0008] Preferably, the screw rod is rotatably connected to the displacement block, and the displacement block is slidably connected to the displacement frame via the screw rod.

[0009] Preferably, a through hole is provided on the displacement block, and the connecting rod passes through the through hole of the displacement block and is fixedly connected to the displacement block.

[0010] Preferably, a through hole is provided on the upper portion of the first support frame, the screw rod passes through the through hole of the first support frame, and one end of the screw rod is connected to a motor.

[0011] Preferably, a limit frame and a floating block are arranged inside the measuring tube, the limit frame is arranged in a semicircular shape, and grooves are arranged on both sides of the limit frame.

[0012] Preferably, the floating block is arranged in a quasi-circular shape, a notch is arranged on one side of the floating block, the notch of the floating block matches the groove of the limiting frame, and the floating block is slidably connected to the limiting frame.

[0013] Preferably, the brush is arranged in a ring shape, the cleaning frame is arranged in a ring shape, a plurality of cleaning brush heads are arranged on the cleaning frame, and the brush matches the cleaning frame.

[0014] Preferably, the drain pipe is located between the measuring tank and the weighing device.

[0015] The beneficial effects of the present invention are: (1) By setting up the measuring component, the technical effect that can be achieved is that it is convenient to measure the slurry density by means of slurry weighing and volume conversion, with high accuracy and not easily affected by the medium properties and environment to produce errors. The infrared sensor is fixedly connected to the top of the measuring tube, which is convenient for real-time monitoring of the liquid position so as to measure the density of the slurry to be measured. The notch of the float block matches the groove of the limit frame, and the float block is slidably connected to the limit frame, so that the float block can move up and down along the Z-axis direction through the limit frame to monitor the liquid height.

[0016] (2) By setting up the cleaning component, the technical effect that can be achieved is that the setting of the displacement frame, screw, displacement block and connecting rod is convenient for driving the brush to move up and down along the Z-axis direction to clean the inner wall of the measuring tank and prevent impurities from adhering to the inner wall and affecting the use of the device. The brush is matched with the cleaning frame to facilitate the friction between the cleaning frame and the brush to shake off impurities and prevent excessive impurities from accumulating on the brush and the cleaning frame and affecting the cleaning effect.

[0017] (3) By setting up the sampling assembly, the technical effect that can be achieved is that the setting of the first solenoid valve and the second solenoid valve facilitates accurate control of the delivery and stop of the water body and the slurry to be measured, so as to measure the density of the slurry to be measured. A sprayer is arranged at the bottom of the liquid inlet pipe, and the sprayer is located inside the measuring tank. The sprayer can effectively make the slurry evenly distributed in the measuring tank during input, avoiding the occurrence of local uneven concentration, and also reducing the influence of the flow of the slurry during input on the weighing process, thereby ensuring the accuracy of the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0019] Figure 1 A perspective view of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a left side view of the present invention; Figure 4 It is a structural diagram of some cleaning components in the present invention; Figure 5 is a first structural diagram of the measuring component in the present invention; Figure 6 is a second structural diagram of the measuring component in the present invention; Figure 7 is an internal top view of the measuring assembly of the present invention; Figure 8 It is the internal structure diagram of the measuring tube in the present invention; Fig. 9 It is a structural diagram of the limit frame and the floating block in the present invention; Fig.10 An exploded view of a portion of the measurement components of the present invention; Description of main component symbols: In the figure: 1. measuring tank; 101. sprayer; 102. brush; 103. cleaning rack; 2. first support rack; 201. displacement rack; 202. screw; 203. displacement block; 3. weighing machine; 4. motor; 5. water pipe; 6. sample tube; 7. first solenoid valve; 8. second solenoid valve; 9. drain pipe; 10. support plate; 11. measuring tube; 1101. limit rack; 1102. float; 12. infrared sensor; 13. second support rack; 14. connecting rod; 15. delivery pipe; 16. liquid inlet pipe. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are clearly and completely described below in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0021] In the description of the present application, it should be understood that the orientation or position relationship indicated by "inside" or "outside" is based on the orientation or position described in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, specific orientation structure and operation, and therefore cannot be understood as a limitation on the present application.

[0022] Reference Figures 1 to 10 , a weighing type online device for measuring slurry density disclosed in the present invention comprises a measuring component, a cleaning component and a sampling component, wherein the sampling component is located above the measuring component; The measuring assembly includes a measuring tank 1, a weighing device 3, a discharge pipe 9, a measuring tube 11, an infrared sensor 12, a second support frame 13 and a delivery pipe 15. The measuring tank 1 is fixedly connected to the top of the weighing device 3, the discharge pipe 9 is fixedly connected to the bottom of the measuring tank 1, a valve is arranged on the discharge pipe 9, the second support frame 13 is fixedly connected to one side below the measuring tank 1, the measuring tube 11 is fixedly connected to the top of the second support frame 13, and the infrared sensor 12 is fixedly connected to the top of the measuring tube 11, so as to facilitate real-time monitoring of the liquid position so as to measure the density of the slurry to be measured. The delivery pipe 15 connects the measuring tank 1 and the measuring tube 11. The setting of the measuring assembly facilitates the measurement of the slurry density by means of slurry weighing and volume conversion, with high accuracy, and is not easily affected by the medium properties and the environment to generate errors; The cleaning assembly includes a first support frame 2, a motor 4, a support plate 10, a connecting rod 14, a brush 102 and a cleaning frame 103, wherein the first support frame 2 is fixedly connected to the top of the support plate 10, the connecting rod 14 is fixedly connected to the brush 102, the brush 102 is located inside the measuring tank 1, and the cleaning frame 103 is fixedly connected to the inside of the measuring tank 1; The sampling assembly includes a water pipe 5, a sample tube 6, a first solenoid valve 7, a second solenoid valve 8 and a liquid inlet pipe 16. The water pipe 5 is connected to the liquid inlet pipe 16 through the second solenoid valve 8, and the sample tube 6 is connected to the liquid inlet pipe 16 through the first solenoid valve 7. The arrangement of the first solenoid valve 7 and the second solenoid valve 8 facilitates accurate control of the delivery and stop of water and the slurry to be measured, so as to measure the density of the slurry to be measured. A sprayer 101 is arranged at the bottom of the liquid inlet pipe 16, and the sprayer 101 is located inside the measuring tank 1. The sprayer 101 can effectively make the slurry evenly distributed in the measuring tank 1 during input, avoiding the occurrence of local uneven concentration, and also reducing the influence of the flow of the slurry during input on the weighing process, thereby ensuring the accuracy of the measurement result.

[0023] Reference Figures 1 to 4 The first support frame 2 is arranged in a U shape, and a displacement frame 201, a screw rod 202 and a displacement block 203 are arranged on the inner side of the first support frame 2, and the displacement frame 201 is fixedly connected to the top of the support plate 10; the screw rod 202 is rotatably connected to the displacement block 203, and the displacement block 203 is slidably connected to the displacement frame 201 through the screw rod 202; a through hole is arranged on the displacement block 203, and the connecting rod 14 passes through the through hole of the displacement block 203 and is fixedly connected to the displacement block 203; a through hole is arranged on the upper part of the first support frame 2, and the screw rod 202 passes through the through hole of the first support frame 2, and one end of the screw rod 202 is connected to the motor 4, and the arrangement of the displacement frame 201, the screw rod 202, the displacement block 203 and the connecting rod 14 is convenient for driving the brush 102 to move up and down along the Z-axis direction to clean the inner wall of the measuring tank 1 and prevent impurities from adhering to the inner wall and affecting the use of the device.

[0024] Reference Figures 5 to 9 A limit frame 1101 and a float block 1102 are arranged inside the measuring tube 11. The limit frame 1101 is arranged in a semicircular shape, and grooves are arranged on both sides of the limit frame 1101; the float block 1102 is arranged in a circular shape, and a notch is arranged on one side of the float block 1102. The notch of the float block 1102 matches the groove of the limit frame 1101. The float block 1102 is slidably connected to the limit frame 1101, so that the float block 1102 can move up and down along the Z-axis direction through the limit frame 1101 to monitor the liquid height.

[0025] Reference Figures 1 to 7 as well as Fig.10The brush 102 is arranged in a ring shape, the cleaning frame 103 is arranged in a ring shape, and a plurality of cleaning brush heads are arranged on the cleaning frame 103. The brush 102 matches the cleaning frame 103, so that the cleaning frame 103 and the brush 102 can rub against each other to shake off impurities and prevent excessive impurities from accumulating on the brush 102 and the cleaning frame 103 and affecting the cleaning effect; the drain pipe 9 is located between the measuring tank 1 and the weighing device 3.

[0026] The working principle and use process of the present invention are as follows: the net weight of the device is weighed using a weighing device 3, and the net weight of the device is recorded as m1. The second solenoid valve 8 is controlled to open, and water is transported to the inside of the measuring tank 1 through the water pipe 5, the liquid inlet pipe 16 and the sprinkler 101. The delivery pipe 15 connects the measuring tube 11 and the measuring tank 1. As the water level rises, the float 1102 in the measuring tube 11 rises along the Z-axis direction through the limit frame 1101. The rising height of the float 1102 is consistent with the rising height of the water level in the measuring tank 1. The position of the float 1102 is monitored by the infrared sensor 12. When it reaches the preset position, the second solenoid valve 8 is closed, and no water is transported to the measuring tank 1. Wait for the reading of the weighing device 3 to stabilize, and record the weight of the device filled with water as m2.

[0027] Open the valve, and the water will be discharged through the drain pipe 9 until the water in the measuring tank 1 and the measuring pipe 11 is emptied, and then close the valve.

[0028] The first solenoid valve 7 is controlled to open, and the slurry to be tested is transported to the inside of the measuring tank 1 through the sample tube 6, the liquid inlet tube 16 and the sprinkler 101. The delivery tube 15 connects the measuring tube 11 and the measuring tank 1. As the water level of the slurry to be tested rises, the float 1102 in the measuring tube 11 rises along the Z-axis direction through the limit frame 1101. The rising height of the float 1102 is consistent with the rising height of the water level of the slurry to be tested in the measuring tank 1. The position of the float 1102 is monitored by the infrared sensor 12. When it reaches the preset position, the first solenoid valve 7 is closed, and the slurry to be tested is no longer transported to the measuring tank 1. Wait for the reading of the weighing device 3 to be stable, record the weight of the device containing the slurry to be tested as m3, and calculate the density of the slurry to be tested by the following formula: Slurry density: ρslurry = (m3-m1) / (m2-m1) After the slurry density measurement is completed, the valve is opened, and the slurry is discharged through the drain pipe 9 until the slurry in the measuring tank 1 and the measuring tube 11 is emptied, and the valve is closed.

[0029] Start cleaning work: open the second solenoid valve 8, water is transported to the inside of the measuring tank 1 through the water pipe 5, the liquid inlet pipe 16 and the sprinkler 101, and the motor 4 is started at the same time. The screw 202 rotates to drive the displacement block 203, the connecting rod 14 and the brush 102 to slide up and down along the Z-axis direction through the displacement frame 201, and the inner wall of the measuring tank 1 is cleaned with water. At the same time, the brush 102 will pass through the cleaning frame 103 when moving up and down. The cleaning frame 103 and the brush 102 rub against each other to shake off impurities to prevent excessive impurities from accumulating on the brush 102 and the cleaning frame 103 and affecting the cleaning effect. When the cleaning is completed, close the second solenoid valve 8, open the valve, and discharge the cleaning water through the drain pipe 9.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A weighing type on-line device for measuring slurry density, characterized in that: It comprises a measuring component, a cleaning component and a sampling component, wherein the sampling component is located above the measuring component; The measuring assembly comprises a measuring tank (1), a weighing device (3), a discharge pipe (9), a measuring tube (11), an infrared sensor (12), a second support frame (13) and a delivery pipe (15); the measuring tank (1) is fixedly connected to the top of the weighing device (3); the discharge pipe (9) is fixedly connected to the bottom of the measuring tank (1); a valve is provided on the discharge pipe (9); the second support frame (13) is fixedly connected to one side of the bottom of the measuring tank (1); the measuring tube (11) is fixedly connected to the top of the second support frame (13); the infrared sensor (12) is fixedly connected to the top of the measuring tube (11); and the delivery pipe (15) connects the measuring tank (1) and the measuring tube (11); The cleaning assembly comprises a first support frame (2), a motor (4), a support plate (10), a connecting rod (14), a brush (102) and a cleaning frame (103), wherein the first support frame (2) is fixedly connected to the top of the support plate (10), the connecting rod (14) is fixedly connected to the brush (102), the brush (102) is located inside the measuring tank (1), and the cleaning frame (103) is fixedly connected to the inside of the measuring tank (1); The sampling assembly comprises a water delivery pipe (5), a sample tube (6), a first solenoid valve (7), a second solenoid valve (8) and a liquid inlet pipe (16); the water delivery pipe (5) is connected to the liquid inlet pipe (16) via the second solenoid valve (8), and the sample tube (6) is connected to the liquid inlet pipe (16) via the first solenoid valve (7).

2. The weighing type on-line device for measuring slurry density according to claim 1, characterized in that: A sprayer (101) is provided at the bottom of the liquid inlet pipe (16), and the sprayer (101) is located inside the measuring tank (1).

3. The weighing type on-line device for measuring slurry density according to claim 1, characterized in that: The first support frame (2) is arranged in a U shape, and a displacement frame (201), a screw rod (202) and a displacement block (203) are arranged on the inner side of the first support frame (2), and the displacement frame (201) is fixedly connected to the top of the support plate (10).

4. The weighing type on-line device for measuring slurry density according to claim 3, characterized in that: The screw rod (202) is rotatably connected to the displacement block (203), and the displacement block (203) is slidably connected to the displacement frame (201) via the screw rod (202).

5. The weighing type on-line device for measuring slurry density according to claim 4, characterized in that: A through hole is provided on the displacement block (203), and the connecting rod (14) passes through the through hole of the displacement block (203) and is fixedly connected to the displacement block (203).

6. The weighing type on-line device for measuring slurry density according to claim 4, characterized in that: A through hole is provided on the upper portion of the first support frame (2), the screw rod (202) passes through the through hole of the first support frame (2), and one end of the screw rod (202) is connected to a motor (4).

7. The weighing type on-line device for measuring slurry density according to claim 1, characterized in that: A limiting frame (1101) and a floating block (1102) are arranged inside the measuring tube (11); the limiting frame (1101) is arranged in a semicircular shape, and grooves are arranged on both sides of the limiting frame (1101).

8. The weighing type on-line device for measuring slurry density according to claim 7, characterized in that: The floating block (1102) is arranged in a quasi-circular shape, and a notch is arranged on one side of the floating block (1102). The notch of the floating block (1102) matches the groove of the limiting frame (1101), and the floating block (1102) is slidably connected to the limiting frame (1101).

9. The weighing type on-line device for measuring slurry density according to claim 1, characterized in that: The brush (102) is arranged in a ring shape, the cleaning frame (103) is arranged in a ring shape, a plurality of cleaning brush heads are arranged on the cleaning frame (103), and the brush (102) matches the cleaning frame (103).

10. The weighing type on-line device for measuring slurry density according to claim 1, characterized in that: The liquid discharge pipe (9) is located between the measuring tank (1) and the weighing device (3).

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