Liquid material pumping device

Abstract

The utility model discloses a liquid material pumping device, which relates to the field of material transportation and comprises a material pool, a self-absorption tank and a centrifugal pump, the material pool is connected with a feed port, the self-absorption tank is connected with a material pump inlet of the centrifugal pump through a pressure balance pipe, a balance air port is provided with an isolating membrane, and the balance air port and the material pump inlet are communicated with a discharge port. A liquid level monitoring sensor at the bottom in the self-absorption tank is connected with an alarm lamp, a pressure sensor is used for monitoring the liquid level, a pressure balance pipe is provided with a one-way valve, a material pool connecting pipeline is provided with a filtering device, and the self-absorption tank is provided with a material supplementing opening and a discharging opening and is fixed through a mounting base. According to the device, the pressure of the system is kept stable through the pressure balance pipe, the starting speed of the centrifugal pump can be increased, the material conveying stability is guaranteed, and the equipment damage risk is reduced; the liquid level in the tank is controlled through the pressure sensor, and stable operation of the centrifugal pump is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to material transportation field especially a liquid material pumping device. BACKGROUND

[0002] In the modern industrial system, the pumping of liquid material is a very key basic operation, and is widely used in many fields such as chemical industry, pharmacy, food and beverage etc. However, the traditional liquid material pumping technology has many drawbacks, which seriously restricts the improvement of production efficiency and product quality.

[0003] As a common pumping equipment, the centrifugal pump often has the phenomenon of vacuum when actually running. When the liquid material supply in the centrifugal pump is insufficient, the pump body is easy to produce cavitation, which not only will make the pumping efficiency decrease greatly, but also will cause irreversible cavitation damage to the key components such as impeller of the centrifugal pump. Taking chemical production as an example, if the centrifugal pump is vacuumed during the continuous conveying of reaction liquid, it will cause unstable supply of reaction raw materials, affect the chemical reaction process, reduce the product quality, and even cause safety accidents. At the same time, frequent equipment damage means high maintenance cost and long downtime, which greatly increases the operating cost of enterprises.

[0004] The accuracy of liquid level monitoring is also a big problem faced by the traditional pumping technology. The accuracy of existing liquid level monitoring equipment is uneven, and some equipment is greatly disturbed by environmental factors, so it cannot monitor the liquid level change in real time and accurately. In food and beverage production, improper liquid level control will cause unbalanced ingredient proportion, affecting the stability of product taste and quality. Too high liquid level may cause material overflow and pollute the production environment, and too low liquid level will cause the centrifugal pump to be vacuumed, affecting the continuity of production. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide a liquid material pumping device with fast starting speed and higher conveying material stability.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0007] A liquid material pumping device, the key technology of which lies in that the device comprises a material pool, a self-suction tank and a centrifugal pump, the material pool is connected with a feeding port through a pipeline; a balance gas port is arranged at the top end of the side wall of the self-suction tank body, the balance gas port is connected with a material inlet port of the centrifugal pump through a pressure balance pipe, and the balance gas port is provided with a separation membrane; a discharge port is arranged below the balance gas port, and the discharge port is connected with the material inlet port of the centrifugal pump; the balance gas port, the material inlet port and the discharge port are in communication.

[0008] Preferably, the self-suction tank is provided with a liquid level monitoring sensor at the bottom of the tank, and the liquid level monitoring sensor is connected with an alarm lamp; the liquid level monitoring sensor uses a pressure sensor to monitor the liquid level through liquid pressure.

[0009] Preferably, a one-way valve is arranged in the pressure balance pipe, and the one-way valve is arranged from the self-suction tank to the centrifugal pump.

[0010] Preferably, a filter device is arranged at the end of the connecting pipeline between the material pool and the feed inlet.

[0011] Preferably, the self-suction tank is provided with a material supplementing opening at the top of the self-suction tank, which is used to supplement material when the material in the self-suction tank is insufficient; and the self-suction tank is provided with a material discharging opening at the bottom of the self-suction tank, which is used to empty the remaining material in the tank when the material is replaced.

[0012] Preferably, the self-suction tank is installed on the ground through a mounting seat, and the mounting seat is provided with a hollow portion matched with the material discharging opening at the bottom of the self-suction tank.

[0013] Preferably, the liquid level monitoring sensor lights up the alarm lamp when the liquid level is lower than 20% or higher than 80%.

[0014] Preferably, the isolation membrane is a ceramic filter membrane, which is responsible for isolating the liquid in the tank.

[0015] The technical scheme has the following beneficial effects:

[0016] The utility model discloses a pressure balance pipe is connected to the upper air part of self-suction tank, and when the centrifugal pump starts, the negative pressure at the material inlet of the pump is balanced, the system pressure is kept stable, the starting speed is improved, the stability of material conveying is guaranteed, the damage risk of equipment is reduced, and the service life of equipment is prolonged.

[0017] The utility model discloses a self-suction tank and pressure sensor are combined as liquid level monitoring sensor, and the liquid level in the tank can be controlled through the pressure change in the tank, and the stable operation of centrifugal pump is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further explained in detail in connection with the drawings and specific embodiment.

[0019] Figure 1 It is a kind of liquid material pumping device schematic diagram that the utility model proposes;

[0020] REFERENCE SIGNS

[0021] 1, filter device;2, material pool;3, feed inlet;4, material supplementing opening;5, balance air port;6, isolation membrane;7, one-way valve;8, self-suction tank;9, centrifugal pump;10, discharge opening;11, material discharging opening;12, liquid level monitoring sensor;13, mounting seat. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings and specific embodiments in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] The utility model provides a kind of liquid material pumping device, this device is connected by pipeline with material pool 2, self-suction tank 8 and centrifugal pump 9, material pool 2 is connected with the feed inlet 3 on the sidewall of self-suction tank 8 by pipeline, and the connecting pipeline of material pool 2 and feed inlet 3 is provided with filter device 1 at the end of material pool 2, the filter device 1 here is responsible for filtering impurities in material pool 2, to prevent plugging pipeline;Self-suction tank 8 tank body sidewall top end is provided with balance gas port 5, and isolation membrane 6 is arranged at balance gas port 5, and balance gas port 5 is connected with the material inlet of centrifugal pump 9 by pressure balance pipe, and one-way valve 7 is arranged in pressure balance pipe, and the direction of one-way valve 7 is from self-suction tank 8 to centrifugal pump 9.

[0024] Pressure balance pipe is used for balancing the pressure at the material inlet, by connecting with the gas above self-suction tank 8, to ensure the stability and continuity of material delivery under the condition of power fluctuation when centrifugal pump 9 starts and works, while reducing the impact of liquid material on the inside of centrifugal pump 9, prolonging service life.

[0025] Balance gas port 5 is provided with discharge port 10 below, and discharge port 10 is connected with the material inlet of centrifugal pump 9, so that balance gas port 5, material inlet and discharge port 10 are communicated at three ends.

[0026] Self-suction tank 8 is provided with liquid level monitoring sensor 12 in the bottom of tank, and the sensor uses pressure sensor, and the liquid level is monitored by liquid pressure, and the sensor is connected with alarm lamp;Liquid level monitoring sensor 12 works according to the relationship between material pressure and liquid level height, and only needs to adjust pressure threshold before replacing material, so that accurate control of liquid level can be realized under the condition that the density of liquid material is stable,

[0027] The pressure sensor is used as the liquid level monitoring sensor 12 in the utility model, and compared with other sensors, is more suitable for the transfer of liquid materials, only requires the density of the liquid material to be stable, and the precision control of the liquid level height can be realized, the pressure sensor structure is relatively simple, and installation and maintenance are more convenient, the precision of the commonly used floating ball type sensor is limited by the size of the floating ball and is difficult to play a role in special liquid materials, for example, in some high viscosity liquid materials, the floating ball is adhered, the normal floating is affected, and the monitoring precision is affected.

[0028] The self-suction tank 8 is provided with a material supplementing opening 4 at the top, which is used for supplementing materials when the materials in the self-suction tank 8 are insufficient; and the self-suction tank 8 is provided with a material discharging opening 11 at the bottom, which is used for emptying the remaining materials in the tank when the materials are replaced. The self-suction tank 8 is installed on the ground through a mounting seat 13, and the mounting seat 13 is provided with an opening matching the material discharging opening 11 at the bottom of the self-suction tank 8.

[0029] The specific implementation in the working environment of the pharmaceutical factory is as follows:

[0030] During the installation of the device, the technical personnel of the pharmaceutical factory connect the material pool 2 and the self-suction tank 8 through the pipeline with the filtering device 1. The filtering device 1 is composed of multiple layers of fine filter screens, which filter out solid impurities larger than a certain particle size, and ensure that the medicinal liquid entering the self-suction tank 8 and the centrifugal pump 9 completely meets the quality standards of pharmaceutical production.

[0031] The self-suction tank 8 is installed on the ground of the clean workshop through the mounting seat 13, and the opening design of the mounting seat 13 is accurately matched with the material discharging opening 11 at the bottom of the self-suction tank 8. When it is necessary to replace different batches of medicinal liquid or to deeply clean the equipment, the operator only needs to open the valve of the material discharging opening 11, and the residual medicinal liquid and cleaning agent can be quickly emptied under the action of gravity, discharged out of the workshop through a special waste liquid collecting pipeline, and the cross contamination between different batches of medicinal liquid is avoided, and the quality of each batch of pharmaceutical products is ensured to be not affected.

[0032] The material supplementing opening 4 at the top of the self-suction tank 8 plays an indispensable role in daily production. Before the production starts, the technical personnel will add an appropriate amount of initial medicinal liquid into the self-suction tank 8 through the material supplementing opening 4, so as to ensure that there is enough material supply when the centrifugal pump 9 starts, and to accelerate the starting speed of the centrifugal pump 9; and the material supplementing opening 4 can also be used as the injection port of the cleaning agent when the tank body is cleaned after the batch is replaced.

[0033] Before use, the liquid level monitoring sensor 12 is debugged according to different types of drugs, and the pressure threshold is adjusted to make the liquid level monitoring sensor 12 monitor the liquid level in the self-suction tank 8 in real time. When the liquid level exceeds a certain threshold, an alarm is given. When the liquid level monitoring sensor 12 detects that the liquid level is lower than 20%, the sensor will immediately transmit a signal to the alarm lamp connected thereto, and the alarm lamp will light up a bright red light. At the same time, it can also be connected to the central control system of the workshop of the pharmaceutical factory, and the system automatically sends alarm information to the handheld terminal of the operator. After receiving the alarm, the operator can quickly supplement the liquid in the self-suction tank 8 through the feeding port 4 to ensure that the centrifugal pump 9 works continuously and stably, and to avoid the centrifugal pump 9 being pumped due to insufficient liquid, which affects the progress and quality of drug production; when the liquid level is higher than 80%, the alarm lamp lights up a yellow light to remind the operator to adjust the flow of the liquid delivered from the liquid preparation tank to the self-suction tank 8 in time to prevent waste and pollution caused by liquid overflow. This precise liquid level monitoring and early warning mechanism greatly improves the automation and safety of the production process.

[0034] Before the centrifugal pump 9 starts, the balance gas port 5 at the top of the side wall of the self-suction tank 8 is connected to the material inlet of the centrifugal pump 9 through a pressure balance pipe with a one-way valve 7, and the discharge port 10 below the balance gas port 5 is also connected to the material inlet. The ceramic filter membrane at the balance gas port 5 ensures smooth passage of gas while effectively isolating the liquid in the tank to prevent the liquid from clogging the one-way valve 7 and affecting the normal use of the pressure balance pipe. The one-way valve 7 ensures that gas and material can only flow from the self-suction tank 8 to the centrifugal pump 9, preventing the material in the centrifugal pump 9 from flowing back to the self-suction tank 8, and ensuring the unidirectionality and stability of the delivery process.

[0035] When the centrifugal pump 9 starts, as the liquid is continuously sucked from the self-suction tank 8 into the centrifugal pump 9 through the discharge port 10, the pressure balance pipe automatically adjusts the pressure at the material inlet to keep it stable during the operation of the centrifugal pump 9, ensuring that the liquid can be continuously and stably pumped. During the entire liquid delivery process, the device operates smoothly without leakage or pollution, fully meeting the requirements of the pharmaceutical factory's Good Manufacturing Practice (GMP) and providing reliable protection for high-quality drug production.

[0036] By using the liquid material pumping device, the pharmaceutical factory can improve production efficiency while reducing equipment failure rate and maintenance cost, ensuring the quality stability and consistency of each batch of drugs and enhancing the market competitiveness of the enterprise.

[0037] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the inventive concept. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the inventive concept. Thus, the present inventive concept is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid material pumping apparatus, characterized by, The device comprises a material pool (2), a self-suction tank (8) and a centrifugal pump (9), the material pool (2) is connected with a feeding port (3) through a pipeline; the self-suction tank (8) is provided with a balance gas port (5) at the top of the side wall of the tank body, the balance gas port (5) is connected with a material inlet of the centrifugal pump (9) through a pressure balance pipeline, the balance gas port (5) is provided with a separation membrane (6); a discharge port (10) is arranged below the balance gas port (5), the discharge port (10) is connected with the material inlet of the centrifugal pump (9); the balance gas port (5), the material inlet and the discharge port (10) are in communication.

2. A liquid material pumping apparatus as defined in claim 1, wherein, The self-suction tank (8) is provided with a liquid level monitoring sensor (12) at the bottom of the tank, the liquid level monitoring sensor (12) is connected with an alarm lamp; the liquid level monitoring sensor (12) uses a pressure sensor to monitor the liquid level through liquid pressure.

3. A liquid material pumping apparatus as defined in claim 1, wherein, A one-way valve (7) is arranged in the pressure balance pipeline, the one-way valve (7) is directed from the self-suction tank (8) to the centrifugal pump (9).

4. A liquid material pumping apparatus as defined in claim 1, wherein A filtering device (1) is arranged at the end of the connecting pipeline between the material pool (2) and the feeding port (3).

5. A liquid material pumping apparatus as defined in claim 1, wherein, The self-suction tank (8) is provided with a material supplementing port (4) at the top, which is used to supplement material when the material in the self-suction tank (8) is insufficient; the self-suction tank (8) is provided with a material discharging port (11) at the bottom, which is used to empty the remaining material in the tank when the material is replaced.

6. A liquid material pumping apparatus as defined in claim 1, wherein, The self-suction tank (8) is installed on the ground through a mounting seat (13), the mounting seat (13) is provided with a hollow part which matches the material discharging port (11) at the bottom of the self-suction tank (8).

7. A liquid material pumping apparatus as defined in claim 2, wherein When the liquid level is lower than 20% or higher than 80%, the liquid level monitoring sensor (12) lights up the alarm lamp.

8. A liquid material pumping apparatus as defined in claim 1, wherein, The separation membrane (6) is a ceramic filtering membrane, which is responsible for separating the liquid in the tank.

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