Anti-freezing device for chemical pump

Abstract

The utility model relates to an anti-freezing device for a chemical pump, the chemical pump is provided with a pump seat (00), the anti-freezing device is arranged below the pump seat (00), and the anti-freezing device comprises a shell (1), a heating element (2), a cofferdam (3) and a bottom plate (4); the shell (1) is attached to the pump base (00), a containing space (11) is formed in the shell (1), and the heating element (2) is arranged in the containing space (11) and provides heat for the pump base (00); the cofferdam (3) is formed by splicing a plurality of vertical plates (31), is arranged on the periphery of the shell (1) and is fixed by a bottom plate (4), and the outer side wall of the shell (1), the inner side wall of the cofferdam (3) and the upper surface of the bottom plate (4) jointly define a water collecting tank (41) used for storing water formed by melting an ice layer. The chemical pump can be effectively protected in a low-temperature environment in winter, and the problems that the surface of the pump base is iced and difficult to clean, and the pump base is corroded by accumulated water formed after ice melting are solved.

Description

Technical Field

[0001] The utility model relates to an antifreeze device for a chemical pump, in particular to an antifreeze device for a chemical pump with a pump seat. Background Art

[0002] Chemical pumps are equipment used to transport fluids. They consist of a pump body, a delivery chamber, rotating parts, and a sealing system. They are widely used in industries such as petroleum, chemicals, metallurgy, synthetic fibers, pharmaceuticals, food, and urban water supply and drainage. They can be divided according to structure and function, including but not limited to centrifugal pumps, reciprocating pumps, and gear pumps.

[0003] Chemical pumps are usually installed in outdoor environments and mounted on a cement platform through a pump seat. When the temperature is below 0°C, ice will form on the surface of the pump seat, and the thickness of the ice layer can even reach more than ten centimeters.

[0004] However, ice on the pump seat will cause the lower part of the pump to remain in a low temperature state, which can easily cause the pump seat to be frozen. For example, for chemical pumps with separate pump bodies and motors, since the pump body and motor are independently installed on the pump seat, and the pump body and motor are connected by a rotating shaft, the uneven expansion of the pump seat can easily cause misalignment between the pump body and the motor, affecting the normal operation of the chemical pump, reducing the service life of the chemical pump, and increasing maintenance costs. In addition, ice on the pump seat is not conducive to chemical production. For example, if the material temperature is too low, an additional heating link needs to be set up downstream, which increases the overall energy consumption of the equipment and may even cause production interruptions due to changes in material properties.

[0005] At present, the methods to solve the above problems are to manually shovel the ice layer on the surface of the pump seat, melt the ice layer by washing with hot water, or lay antifreeze film around the pump. However, these methods have low deicing efficiency, are time-consuming and labor-intensive, and it is difficult to remove the ice in time. Moreover, after the ice melts to form water, it is easy to form difficult-to-clean water accumulation between the pump seat and the cement platform, which will cause corrosion to the chemical pump in an outdoor environment. Utility Model Content

[0006] The utility model aims to solve the problem that the surface of the pump seat of a chemical pump is frozen in winter and is difficult to clean, which increases the maintenance cost, reduces the service life of the chemical pump, and easily causes water accumulation to corrode the chemical pump.

[0007] For the above purpose, the utility model provides an antifreeze device for a chemical pump, the chemical pump comprises a pump body, a motor, and a pump seat 00 for supporting the pump body and the motor, which is arranged below the pump seat 00. The antifreeze device for a chemical pump comprises: a housing 1, a heating element 2, a cofferdam 3, and a bottom plate 4.

[0008] The shell 1 has a receiving space 11 inside, and the upper end surface of the shell 1 has a shape corresponding to the bottom surface of the pump seat (00). The upper end surface serves as a support platform 10 and fits with the pump seat 00.

[0009] The heating element 2 is disposed in the accommodating space 11 to provide heat to the pump base 00 .

[0010] The cofferdam 3 is composed of a plurality of vertical plates 31, which are arranged around the shell 1 and fixed by the bottom plate 4. The outer wall of the shell 1, the inner wall of the cofferdam 3 and the upper surface of the bottom plate 4 together form a water collection tank 41 for accumulating water formed by melting ice.

[0011] Therefore, the pump seat 00 is uniformly heated by the heating element 2 to melt the ice on the pump seat into water, which can effectively solve the problem that the ice on the surface of the pump seat is difficult to clean, thereby affecting the normal operation of the chemical pump, reducing the service life of the chemical pump, increasing maintenance costs, and increasing equipment energy consumption.

[0012] The melted ice water can be collected in a sump and discharged into the wastewater channel, thus avoiding the accumulation of water between the cement platform and the pump seat and the corrosion of the pump seat.

[0013] Preferably, the heating element 2 is a flexible long strip-shaped electric heating tape, which is evenly mounted on the inner wall of the upper end surface of the shell 1 by the fixing part 20 in a folded and reciprocating manner, so that the heating area formed by it can cover the lower part of the entire pump seat 00, thereby uniformly heating the pump seat 00.

[0014] Preferably, the cofferdam 3 is provided with a drain port 33 for draining the melted ice water in the water collection tank 41 .

[0015] Preferably, the drain port 33 is connected to one end of a drainage hose, and the other end of the drainage hose is connected to a wastewater channel.

[0016] Preferably, the bottom surface 410 of the water collecting tank 41 is inclined toward the drain outlet 33 so that the melted ice water can be automatically discharged by its own weight.

[0017] Preferably, the surface of the pump seat 00 is provided with a thermal insulation coating to prevent heat loss.

[0018] Preferably, a controller 5 is also included. Temperature sensors 101 are evenly arranged on the support platform 10 of the shell 1. The temperature sensor 101 and the heating element 2 and the controller 5 are connected. The controller 5 regularly reads the temperature measurement value of the pump seat 00 measured by the temperature sensor 101, so that when the temperature measurement value is lower than the safety threshold, the controller 5 turns on the heating element 2, thereby realizing automatic protection of the chemical pump.

[0019] Preferably, the height of the cofferdam 3 is not less than 15 cm to prevent excessive overflow of meltwater.

[0020] Preferably, the controller 5 is connected to an alarm device. When the temperature measurement value is lower than the safety threshold value for a preset number of consecutive times, the controller 5 turns on the alarm device to remind the staff to monitor the status of the chemical pump.

[0021] Preferably, the controller 5 is connected to a timer. After the timer counts that the heating element 2 is turned on for a preset time, if the controller 5 determines that the temperature measurement value is higher than a safety threshold, the heating element 2 is turned off in time to save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a diagram illustrating the connection relationship between the antifreeze device for chemical pumps and the chemical pumps;

[0023] Figure 2 This is a structural illustration of an antifreeze device for a chemical pump as seen from the outside;

[0024] Figure 3 is along Figure 1 The sectional illustration of the AA section;

[0025] Figure 4 This is a diagram illustrating the structure of the electric heating cable installed inside the shell.

[0026] Figure markings: A-chemical pump; 00-pump seat; 1-housing; 10-support platform; 101-temperature sensor; 11-accommodating space; 2-heating element; 20-fixing part; 3-cofferdam; 31-vertical plate; 33-drainage outlet; 34-connecting flange; 4-bottom plate; 41-water collecting trough; 410-bottom surface; 5-controller; 51-power cord. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. The following description is a concretization of the claims of the present invention.

[0028] Example

[0029] Figure 1 The connection relationship between the chemical pump and the antifreeze device is shown; Figure 2 The structure of the antifreeze device as seen from the outside is shown; Figure 3 is along Figure 1 The sectional illustration taken along line AA in the figure shows the internal structure of the antifreeze device. Figure 4 The structure of the electric heating tape arranged inside the shell is shown.

[0030] like Figure 1 As shown, the chemical pump A is composed of a pump body, a motor, and a pump base 00 for supporting the pump body and the motor. The pump body and the motor are located at both ends of the pump base 00 and are connected together by a rotating shaft. The antifreeze device is arranged below the pump base 00, combined with Figure 2 , 3 From the perspective of structure, the antifreeze device consists of a shell 1, a heating element 2, a cofferdam 3, a base plate 4, and a controller 5.

[0031] like Figure 2 , 3 As shown, the housing 1 is a square box with an inclined bottom, and has an accommodating space 11 inside, and the heating element 2 is arranged in the accommodating space 11. The housing 1 has a flat upper end surface as a support platform 10, and the support platform 10 is in contact with the pump seat 00.

[0032] The heating element 2 provides heat to the pump seat 00 to melt the ice layer. Figure 2 , 3 As shown in , 4 , the heating element 2 is a flexible long strip of electric heating tape, which is evenly mounted on the upper inner wall of the shell 1 by the fixing part 20 in a folded and reciprocating manner, so that the heating area formed by it can cover the lower part of the entire pump seat 00, thereby uniformly heating the pump seat 00.

[0033] like Figure 2 , 3 As shown, the cofferdam 3 is composed of four vertical plates 31 (31a, 31b, 31c, 31d) spliced ​​together, arranged around the shell 1, and fixed by the bottom plate 4. The outer wall of the shell 1, the inner wall of the cofferdam 3 and the upper surface of the bottom plate 4 together form a water collecting tank 41 for accumulating water formed by melting ice, so that after the ice layer on the upper side of the pump seat 00 melts into water, the water collecting tank 41 can collect the water to prevent water accumulation at the bottom of the pump seat 00. The power supply line 51 of the heating element 2 passes through the bottom plate 4 and the cofferdam 3 to avoid the melted ice water.

[0034] The height of the cofferdam 3 should not be less than 15 cm to prevent excessive overflow of meltwater.

[0035] like Figure 2 As shown, the cofferdam 3 is provided with a drain port 33 for draining the ice melt water. A connecting flange 34 is provided on the outside of the drain port 33, which is connected to one end of a drainage hose through the connecting flange 34, and the other end of the drainage hose is connected to the waste water channel, so that the ice melt water can be directly drained to the waste water channel.

[0036] like Figure 3 As shown, the bottom surface 410 of the water collecting tank 41 is inclined toward the drain outlet 33, so the melted ice water can be automatically discharged by its own gravity.

[0037] like Figure 2 As shown, temperature sensors 101 are evenly arranged on the support platform 10 of the housing 1. Figure 3 As shown, the controller 5 is arranged in the housing 1 .

[0038] The temperature sensor 101 is connected to the heating element 2 and the controller 5. The controller 5 periodically reads the temperature measurement value of the pump seat 00 measured by the temperature sensor 101, so that when the temperature measurement value is lower than the safety threshold, the controller 5 turns on the heating element 2. The controller 5 is connected to a timer. After the timer counts that the heating element 2 is turned on for a preset time, if the controller 5 determines that the temperature measurement value is higher than the safety threshold, the heating element 2 is turned off.

[0039] The controller 5 is also connected to an alarm device, so that when the temperature measurement value is lower than the safety threshold for a preset number of consecutive times, the controller 5 turns on the alarm device. The alarm device can be a device that sends an electronic signal to a remote terminal, or a device that can send a visual or audible alarm signal, such as a flashing light, a buzzer, etc.

[0040] Before installing the chemical pump, the antifreeze device needs to be set on the cement platform in advance, the upper end surface of the shell 1 needs to be adjusted horizontally, and then the pump seat 00 of the chemical pump needs to be fixed to the shell 1 of the antifreeze device so that the temperature sensor 101 is in contact with the pump seat 00. After that, the insulation coating is wrapped around the outside of the pump seat 00 to ensure that there are no gaps to prevent heat loss. After that, the power of the heating element and the controller can be turned on.

[0041] Therefore, when the temperature is lower than the safety threshold, the controller 5 can turn on the heating element 2 in time, use the heating element 2 to evenly heat the pump seat 00, and melt the ice on the pump seat into water, which can effectively solve the problem that the ice on the surface of the pump seat is difficult to clean, thereby affecting the normal operation of the chemical pump, reducing the service life of the chemical pump, increasing maintenance costs, and increasing equipment energy consumption. After the heating element 2 is turned on for a preset time, the controller 5 turns off the heating element 2. The water collection tank is used to collect the melted ice and discharge it to the wastewater channel, which can avoid the formation of water accumulation between the cement platform and the pump seat and corroding the pump seat.

[0042] The controller 5 is used to control the heating element 2 through the temperature sensor 101 and the timer, and the alarm device is used to alarm at low temperatures, so that the pump seat 00 can be automatically protected and ice can be prevented on the pump seat 00 in time.

[0043] The antifreeze device for a chemical pump provided by the utility model has a simple structure, is easy to install, and is low in cost. It can provide effective protection for the chemical pump in a low-temperature environment in winter, and is worthy of being promoted and used in this field.

Claims

1. An antifreeze device for a chemical pump, the chemical pump comprising a pump body, a motor, and a pump seat (00) for supporting the pump body and the motor, characterized in that: The antifreeze device is arranged below the pump seat (00), and comprises: a housing (1), a heating element (2), a cofferdam (3), and a bottom plate (4). The shell (1) has a containing space (11) inside, and the upper end surface of the shell (1) has a shape corresponding to the bottom surface of the pump seat (00). The upper end surface serves as a support platform (10) and fits the bottom surface of the pump seat (00). The heating element (2) is arranged in the accommodating space (11) to provide heat to the pump seat (00). The cofferdam (3) is composed of a plurality of vertical plates (31) spliced ​​together, is arranged around the shell (1), and is fixed by the bottom plate (4); the outer side wall of the shell (1), the inner side wall of the cofferdam (3), and the upper surface of the bottom plate (4) together form a water collection tank (41) for accumulating water formed by melting ice.

2. The antifreeze device for a chemical pump according to claim 1, characterized in that: The heating element (2) is a flexible long strip-shaped electric heating tape, which is evenly mounted on the inner side wall of the upper end surface of the shell (1) by a fixing member (20) in a folded and reciprocating manner.

3. The antifreeze device for a chemical pump according to claim 1, characterized in that: The cofferdam (3) is provided with a drainage outlet (33).

4. The antifreeze device for a chemical pump according to claim 3, characterized in that: The drain port (33) is in communication with one end of a drainage hose, and the other end of the drainage hose is connected to a wastewater channel.

5. The antifreeze device for a chemical pump according to claim 3, characterized in that: The bottom surface (410) of the water collecting trough (41) is inclined in the direction of the drainage outlet (33).

6. The antifreeze device for a chemical pump according to any one of claims 1 to 5, characterized in that: The surface of the pump seat (00) is provided with a thermal insulation coating.

7. The antifreeze device for a chemical pump according to any one of claims 1 to 5, characterized in that: It also includes a plurality of temperature sensors (101), a controller (5), A plurality of the temperature sensors (101) are evenly arranged on a support platform (10) of the housing (1), and the temperature sensors (101) are connected to the heating element (2), (1) and the controller (5).

8. The antifreeze device for a chemical pump according to any one of claims 1 to 5, characterized in that: The height of the cofferdam (3) is not less than 15 cm.

9. The antifreeze device for a chemical pump according to claim 7, characterized in that: The controller (5) is connected to an alarm device.

10. The antifreeze device for a chemical pump according to claim 7, characterized in that: The controller (5) is connected to a timer.

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