CN222585825U - Double-water pump switching device for filter press - Google Patents

Abstract

The application relates to a double-water pump switching device for filter presses, which belongs to the field of water pump water supply and comprises two groups of filter presses, wherein each group of filter presses is respectively provided with a water supply pipeline, a water pump and a control valve corresponding to the water pump, the water supply pipeline is communicated with a water inlet of the filter press, the water pump is arranged on the water supply pipeline, water is pumped into the filter press through the water supply pipeline by the water pump, a communication pipeline is arranged between the two groups of water supply pipelines, the communication pipeline is provided with a communication valve for controlling the communication of the two groups of water supply pipelines, the water supply pipeline is respectively provided with a buffer tank arranged between the control valve and the communication pipeline, the buffer tank comprises a tank body, a water inlet and a water outlet, the water inlet is communicated with the position, close to the control valve, of the water supply pipeline, the water outlet is communicated with the position, close to the communication pipeline, and the water inlet is lower than the water outlet. The application has the effects of ensuring the continuous operation of the filter press and avoiding influencing normal production.

Description

Double-water pump switching device for filter press

Technical Field

The application relates to the field of water supply of water pumps, in particular to a double-water-pump switching device for a filter press.

Background

The filter press is a solid-liquid separation device widely applied to various chemical industries, and in the plastic production process, some waste liquid or waste water containing solid particles is often generated. By the action of the filter press, the waste liquid or wastewater can be effectively separated into a solid part and a liquid part, thereby facilitating subsequent treatment and utilization.

At present, in actual work, two filter presses are arranged in parallel, and each filter press is provided with water inlet and is communicated with an independent water supply pipeline, and water is conveyed into the filter press through a water pump.

Aiming at the related technology, when the water pump motor fails to lead to the water failure of the water pump, the water content in the filter press is insufficient, the water pump needs to be stopped for overhauling or replacing, the operation time is seriously influenced, and the production is seriously stopped.

Disclosure of utility model

In order to ensure continuous operation of the filter press and avoid influencing normal production, the application provides a double-water pump switching device for the filter press.

The application provides a double-water pump switching device for a filter press, which adopts the following technical scheme:

The filter press comprises two groups of filter presses, wherein each group of filter presses is respectively provided with a water supply pipeline, a water pump and a control valve, the water supply pipelines are communicated with a water inlet of the filter press, the water pump is arranged on the water supply pipeline, the water pump pumps water into the filter press through the water supply pipelines, the control valve is arranged at a position, close to a water outlet end of the water pump, of the water supply pipeline, communication pipelines are arranged between the two groups of water supply pipelines, two ends of the communication pipelines are respectively communicated with two groups of pipelines between the control valve and the filter press, the communication pipelines are provided with the communication valves, the communication valves control whether the two groups of water supply pipelines are communicated or not, the water supply pipelines are respectively provided with buffer tanks, the buffer tanks are respectively arranged between the control valves and the communication pipelines, each buffer tank comprises a tank body, a water inlet and a water outlet, the water inlet is communicated at a position, close to the control valve, the water outlet is communicated at a position, close to the communication pipeline, and the water inlet is lower than the water outlet.

Through adopting above-mentioned technical scheme, two pressure filter contain two sets of independent water supply pipe, water pump and control valve, can realize the switching of efficient double water pump, make a water pump work under the condition that surpasses its operating power and does not surpass its rated power drive two sets of pressure filter normal operating. The filter press can continuously and stably obtain a required water source, and can be quickly switched to one water pump when the other water pump fails, so that continuous operation of a production line is ensured.

Optionally, the cross-sectional diameter of the water inlet is larger than the cross-sectional diameter of the water outlet.

By adopting the technical scheme, the size of the water inlet is larger than that of the water outlet, so that the flow velocity of water flow of the water inlet is smaller than that of the water outlet, and the impact of water flow is further reduced.

Optionally, the water inlet and the water outlet are arranged opposite to each other, and the water inlet and the water outlet are arranged at two sides of the pipe body respectively.

By adopting the technical scheme, the design that the water inlet and the water outlet are relatively far away can effectively reduce the impact of water flow on the system, stabilize the water flow and reduce the pressure fluctuation, thereby protecting the system from damage.

Optionally, a manual liquid level gauge is arranged in the buffer tank, and the manual liquid level gauge detects the liquid level height in the buffer tank.

By adopting the technical scheme, the manual liquid level meter can conveniently monitor the liquid level height in the buffer tank.

Optionally, one end of the buffer tank close to the ground is conical, a sewage draining pipeline communicated with the interior of the tank body is arranged at the position of the conical top end of the buffer tank, a sewage draining valve is arranged at the position of the sewage draining pipeline connected with the tank body, and water in the tank body flows into the sewage draining pipeline through the sewage draining valve.

By adopting the technical scheme, the sewage and impurities in the buffer tank can be conveniently discharged through the arrangement of the sewage discharging pipeline and the sewage discharging valve.

Optionally, a stop block is coaxially arranged at the lower part in the buffer tank, the stop block is in a biconical shape, a gap exists between the lower conical surface of the stop block and the inner wall of the tank body, and the gap close to the dirt discharging valve is smaller than the gap far away from the dirt discharging valve

Through adopting above-mentioned technical scheme, the lower conical surface of dog and jar internal wall clearance dwindle gradually, have increased the velocity of flow that the rivers flow through the clearance is, make rivers flow through on the clearance with sediment or impurity on the internal wall of jar peel off, reach self-cleaning's effect.

Optionally, a vent pipe is arranged at the position of the tank body far away from the ground, the vent pipe is higher than the water outlet, and is communicated with the inside and the outside of the tank body, a pressure release valve is arranged in the vent pipe, and air in the tank body flows out of the tank body through the pressure release valve

Through adopting above-mentioned technical scheme, the setting of breather pipe and relief valve can keep the inside atmospheric pressure of buffer tank stable.

The automatic alarm device comprises a water supply pipeline, a connecting rod, a buzzer alarm, a rotary wheel, a connecting rod and a set of counter weights, wherein the water supply pipeline is provided with a set of alarm devices, the alarm devices are positioned between the connecting pipeline and a filter press, each set of alarm devices comprises two buzzer alarms which are arranged in parallel, the rotary wheel is arranged parallel to the axis of the water supply pipeline, water in the water supply pipeline drives the rotary wheel to rotate, the rotary wheel is coaxially and fixedly provided with the connecting rod, the connecting rod penetrates through the wall of the water supply pipeline upwards, the counter weights are connected to one end, far away from the rotary wheel, of the connecting rod, the counter weights can swing upwards and downwards in the axial direction of the connecting rod, the buzzer alarm is fixedly arranged on the outer wall of the water supply pipeline, close to the counter weights, and when the counter weights are abutted to the buzzer alarm, the buzzer alarm sounds.

Through adopting above-mentioned technical scheme, alarm device uses through the combination of weight and buzzer siren, can in time send out the police dispatch newspaper when the flow rate appears unusual in the water supply pipe. The intelligent fault alarm mechanism not only can help workers to discover and process problems in time, but also can greatly reduce the risk of equipment damage and save maintenance cost and time.

In summary, the present application includes at least one of the following beneficial technical effects:

1. Through setting up two sets of independent water supply pipe, water pump and control valve, the device can realize the switching of efficient two water pumps. The filter press can continuously and stably obtain a required water source, and can be rapidly switched to the other water pump when one water pump fails, so that continuous normal operation of the subsequent filter press is ensured;

2. The buffer tank is arranged to help balance water pressure and water flow in the water supply pipeline, and the influence of water hammer and pressure fluctuation on the system is reduced. Meanwhile, due to the design of the water inlet and the water outlet, the buffer effect can be further improved, and the system is protected from potential damage;

3. The alarm device can give an alarm in time when the flow rate in the water supply pipeline is abnormal through the combined use of the heavy hammer and the buzzer alarm. The intelligent fault alarm mechanism not only can help workers to discover and process problems in time, but also can greatly reduce the risk of equipment damage and save maintenance cost and time.

Drawings

FIG. 1 is a schematic diagram of a dual water pump switching device for a filter press according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a protruding surge tank of a dual water pump switching device for a filter press according to an embodiment of the present application;

Fig. 3 is a partial enlarged view of a in fig. 2.

The reference numerals indicate 1, a filter press, 2, a water supply pipeline, 3, a water pump, 31, a control valve, 4, a buffer tank, 41, a tank body, 42, a water inlet, 43, a water outlet, 44, a manual liquid level meter, 45, a stop block, 46, a vent pipe, 461, a pressure release valve, 5, a dirt release pipeline, 51, a dirt release valve, 6, a communication pipeline, 61, a communication valve, 7, an alarm device, 71, a rotating wheel, 72, a connecting rod, 73, a heavy hammer, 74, a buzzer alarm, 75 and a bracket.

Detailed Description

The application is described in further detail below with reference to fig. 1-3.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or in communication, directly connected, or indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiment of the application discloses a double-water pump switching device for a filter press. Referring to fig. 1, a dual water pump switching device for a filter press includes two sets of filter presses 1, each of the two sets of filter presses 1 is fixedly connected with an independent water supply pipe 2, a water pump 3 is installed at a position of each water supply pipe 2 far from the filter press 1, and the position of the water pump 3 is lower than that of the filter press 1, and the water pump 3 pumps water into the corresponding filter press 1 through the water supply pipe 2. A control valve 31 is flange-connected to the water supply line 2 near the water pump 3, and the control valve 31 can stop water flow into the filter press 1. In normal operation, the control valve 31 is in an open state. When the water pump 3 needs to be overhauled or fails and needs to be replaced, the control valve 31 is closed, the water pump 3 and the water supply pipeline 2 are independently arranged, so that an operator can conveniently overhaul, and the influence of replacement overhaul on water flow writing in the water supply pipeline 2 caused by the water pump 3 is avoided.

The two groups of water supply pipelines 2 are fixedly connected with a communication pipeline 6, two ends of the communication pipeline 6 are fixedly connected with the two groups of water supply pipelines 2 respectively and are positioned at the positions of the control valve 31 and the filter press 1, and the communication pipeline 6 is communicated with the two groups of water supply pipelines 2. The communication pipeline 6 is connected with a communication valve 61 in a flange manner, when the communication valve 61 is opened, the two groups of water supply pipelines 2 are communicated, and when the communication valve 61 is closed, the two groups of water supply pipelines 2 are relatively independent.

Referring to fig. 1 and 2, buffer tanks 4 are respectively installed on the two sets of water supply lines 2, and the buffer tanks 4 are located between the control valve 31 and the communication line 6. The buffer tank 4 comprises a tank body 41, a water inlet 42 and a water outlet 43. The water inlet 42 and the water outlet 43 are respectively arranged far away from the ground, the water inlet 42 is communicated with the position of the water supply pipeline 2 close to the control valve 31, the water outlet 43 is communicated with the position of the water supply pipeline 2 close to the communicating pipeline 6, and the tank 41 is communicated with the water supply pipeline 2 through the water inlet 42 and the water outlet 43. The tank body 41 of the buffer tank 4 can absorb and store transient pressure fluctuation caused by rapid actions such as starting and stopping of the water pump 3, valve opening and closing, and the like. When the filter press 1 works, water pumped by the water pump 3 enters the tank body 41 of the buffer tank 4 through the water inlet 42, and the water in the tank body 41 flows out of the water outlet 43 after being buffered, so that the impact and the influence on the subsequent filter press 1 caused by the pressure change in the water supply pipeline 2 are relieved.

Referring to fig. 1 and 2, the cross-sectional size of the water inlet 42 is larger than the cross-sectional size of the water outlet 43, and the larger cross-sectional size of the water inlet 42 allows more fluid to enter the surge tank 4 in a short time, thereby reducing the impact of the fluid on the inside of the tank 41. This design helps to reduce vibration and wear of the tank 41 and extend the useful life of the surge tank 4. And the water inlet 42 has a larger cross-sectional dimension than the water outlet 43, which reduces the velocity of the fluid entering the surge tank 4. This helps to reduce turbulence and eddies of the fluid inside the tank 41, allowing the fluid to flow more smoothly.

Referring to fig. 1 and 2, the water inlet 42 and the water outlet 43 are provided at both sides of the tank 41 in the radial direction so that the water inlet 42 and the water outlet 43 are spaced apart by a further distance, and water in the entering tank 41 is more uniformly distributed over the entire cross section of the tank 41 so that the water can stay in the tank 41 for a longer time. And the water inlet 42 and the water outlet 43 which are respectively arranged at the two sides of the tank body 41 are beneficial to reducing the local concentration and vortex phenomenon of water, so that the water can flow in the tank body 41 more smoothly, and the buffer tank 4 can play a better role in buffering. Helping to reduce pressure fluctuations of the fluid within tank 41 and improving stability of the system.

Referring to fig. 1 and 2, a manual liquid level gauge 44 is installed in the tank 41, the manual liquid level gauge 44 is vertically arranged, and the manual liquid level gauge 44 vertically penetrates through the inner wall of the upper end of the tank 41. The manual liquid level meter 44 can convert the water level height in the tank 41 into a numerical value which is convenient for a worker to observe, so that the worker can monitor the water level change in the tank 41 conveniently, measures can be taken in time, and the possibility of accidents caused by problem expansion is avoided. And the manual liquid level meter 44 is easy to install and use, and the manual liquid level meter 44 is low in cost, so that a worker can directly observe the height of the liquid level in the tank 41 in the use process without depending on electronic equipment.

Referring to fig. 1 and 2, one end of the tank 41 below the ground is tapered, and a tapered tip extends downward along the axial direction of the tank 41, and a sewage draining pipe 5 communicating with the inside of the tank 41 is fixedly connected to the tapered tip of the tank 41. The dirt discharging valve 51 is fixedly connected at the connecting position of the dirt discharging pipeline 5 and the tank 41, and the dirt discharging valve 51 controls whether the dirt discharging pipeline 5 is communicated with the interior of the tank 41. It will be appreciated that when water is treated in the buffer tank 4, the water contains impurities which may damage the subsequent system after passing through the buffer tank 4 into the water supply line 2. By opening the purge valve 51, sediment or other impurities in the tank can be rapidly discharged, thereby keeping the tank clean and extending the life of the buffer tank 4. And at the same time, the periodic discharge reduces the risk of these impurities entering the system.

Referring to fig. 1 and 2, a stopper 45 is fixedly connected to the inside of the tank 41 at a position close to the dirt release valve 51, the stopper 45 is in a double cone shape, and the stopper 45 and the tank 41 are coaxially arranged. The stop block 45 comprises an upper conical surface and a lower conical surface, the tip part of the upper conical surface of the stop block 45 is vertically upwards arranged, sediment or impurities in water slide down along the upper conical surface of the stop block 45, and the sediment or impurities are not easy to accumulate. The tip of the lower conical surface of the stop block 45 is vertically downwards, a gap exists between the lower conical surface of the stop block 45 and the inner wall of the tank 41, and the gap close to the dirt discharging valve 51 is smaller than the gap far away from the dirt discharging valve 51. When the dirt discharging valve 51 is opened to discharge dirt, the gap between the baffle 45 and the inner wall of the tank 41 in the direction close to the dirt discharging valve 51 is gradually reduced, the speed of water flow is increased, and the sediment or impurities are peeled off from the inner wall of the tank 41 by the accelerated water flow, so that the tank 41 has a self-cleaning effect.

Referring to fig. 1 and 2, a vent pipe 46 is formed on the side wall of the tank 41, the vent pipe 46 is arranged at a position far away from the ground, and the vent pipe 46 is higher than the page height of the tank 41. The two ends of the vent pipe 46 are respectively communicated with the inside and the outside of the tank 41. A relief valve 461 is fixedly connected in the breather pipe 46 in a coaxial line, and the relief valve 461 controls the conduction of the breather pipe 46. When the water pump 3 needs to be overhauled and switched, the situation that the water pressure of the water pump 3 is unstable occurs, and when the pressure inside the tank 41 exceeds the set maximum pressure of the relief valve 461, the relief valve 461 is opened to enable the inside of the tank 41 to be communicated with the outside, and the excessive pressure is released, so that the buffer tank 4 is prevented from being damaged due to overpressure. When the pressure in the tank 41 is smaller than the set maximum pressure of the relief valve 461, the relief valve 461 is closed, and the inside of the tank 41 is kept in a closed state.

With reference to fig. 2 and 3, both sets of water supply lines 2 are provided with alarm means 7. An alarm device 7 is positioned between the communication pipeline 6 and the filter press 1. The alarm device 7 comprises two buzzers 74 arranged in parallel, a rotating wheel 71, a connecting rod 72 and a group of heavy weights 73 arranged oppositely. The runner 71 is located inside the water supply pipeline 2, and the runner 71 is arranged parallel to the axis of the water supply pipeline 2, and the water flow in the water supply pipeline 2 drives the runner 71 to rotate. The connecting rod 72 is vertical, and connecting rod 72 swivelling joint is in water supply line 2, and connecting rod 72 is perpendicular to water supply line 2 axis, and connecting rod 72 lower extreme wears to locate water supply line 2 inner wall and coaxial line rigid coupling in runner 71. The upper end of the connecting rod 72 is hinged with a heavy hammer 73, the heavy hammer 73 synchronously rotates along with the connecting rod 72, and the heavy hammer 73 swings away from the axis direction of the connecting rod 72 under the action of centrifugal force in the rotating process. The outer wall of the water supply pipeline 2 is fixedly connected with a bracket 75 corresponding to the position of the connecting rod 72, two parallel buzzer alarms 74 are fixedly connected on the bracket 75, and the two buzzer alarms 74 are respectively positioned above and below the heavy hammer 73. When the water supply pipeline 2 is connected with water, the water flowing in the water supply pipeline 2 is driven to rotate through the rotating wheel 71, when the flow rate of the water flowing in the water supply pipeline 2 is higher than a preset flow rate, the heavy hammer 73 is abutted against the buzzer alarm 74 above when the flow rate of the water flowing in the water supply pipeline 2 is higher than the preset flow rate, when the flow rate of the water flowing in the water supply pipeline 2 is lower than the preset flow rate, the heavy hammer 73 is abutted against the buzzer alarm 74 below when the flow rate of the water flowing in the water supply pipeline 2 is 45 degrees to the axis of the connecting shaft, the buzzer alarm 74 alarms, and an operator is reminded to check whether the water pump 3 on the water supply pipeline 2 has an operation fault or not, and the operator is reminded to check.

The implementation principle of the double-water-pump switching device for the filter press is that when the water pump 3 corresponding to one of the two filter presses 1 is overhauled, the communication valve 61 is opened to communicate with the two groups of water supply pipelines 2. And then the control valve 31 corresponding to the water pump 3 to be overhauled is closed, and meanwhile, the first water pump 3 works under the condition that the working power exceeds the rated power and the rated power is not exceeded, so that one water pump 3 can support the two groups of filter presses 1 simultaneously. When the water pump 3 is switched, the buffer tank 4 effectively reduces the impact of water flow on the system, stabilizes the water flow, reduces pressure fluctuation, and protects the system from damage. By providing two independent sets of water supply lines, water pump 3 and control valve 31, the device can achieve efficient dual water pump 3 switching. This not only ensures that the filter press 1 is continuously and stably supplied with the required water, but also rapidly switches to one water pump 3 when the other water pump 3 fails, thereby ensuring continuous normal operation of the subsequent filter press 1.

The application ensures the continuous operation of the filter press and avoids influencing normal production.

The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.

Claims (8)

1. A double-water-pump switching device for a filter press comprises two groups of filter presses (1), wherein each group of filter presses (1) is respectively provided with a water supply pipeline (2), a water pump (3) and a control valve (31), the water supply pipelines (2) are communicated with a water inlet (42) of the filter press (1), the water pump (3) is arranged on the water supply pipeline (2), the water pump (3) pumps water into the filter press (1) through the water supply pipelines (2), the control valve (31) is arranged at the position, close to the water outlet end of the water pump (3), of the water supply pipeline (2), the double-water-pump switching device is characterized in that a communication pipeline (6) is arranged between the two groups of water supply pipelines (2), two ends of the communication pipeline (6) are respectively communicated with two groups of pipelines between the control valve (31) and the filter press (1), the communication pipeline (6) is provided with a communication valve (61), whether the two groups of water supply pipelines (2) are communicated or not is controlled by the communication valve (61), buffer tanks (4) are respectively arranged on the water supply pipelines (2), the buffer tanks (4) are respectively positioned between the control pipelines (31) and the water inlet (41) and the water outlet (43), the water inlet (42) is communicated with the position, close to the control valve (31), of the water supply pipeline (2), the water outlet (43) is communicated with the position, close to the communication pipeline (6), of the water supply pipeline (2), and the water inlet (42) is lower than the water outlet (43).

2. A dual water pump switching device for a filter press according to claim 1, wherein the cross-sectional diameter of the water inlet (42) is larger than the cross-sectional diameter of the water outlet (43).

3. A double water pump switching device for a filter press according to claim 1, wherein the water inlet (42) and the water outlet (43) are arranged opposite to each other, and the water inlet (42) and the water outlet (43) are arranged on two sides of the tank body (41).

4. A dual water pump switching device for a filter press as claimed in claim 1, wherein a manual level gauge (44) is arranged in the buffer tank (4), and the manual level gauge (44) detects the level of the liquid in the buffer tank (4).

5. The double-water-pump switching device for the filter press, which is disclosed in claim 1, is characterized in that one end, close to the ground, of the buffer tank (4) is conical, a sewage draining pipeline (5) communicated with the inside of the tank body (41) is arranged at the position of the conical top end of the buffer tank (4), a sewage draining valve (51) is arranged at the position of the connecting position of the sewage draining pipeline (5) and the tank body (41), and water in the tank body (41) flows into the sewage draining pipeline (5) through the sewage draining valve (51).

6. The double water pump switching device for a filter press according to claim 5, wherein a stop block (45) is coaxially arranged at the inner lower part of the buffer tank (4), the stop block (45) is in a double cone shape, a gap exists between the lower conical surface of the stop block (45) and the inner wall of the tank body (41), and the gap close to the dirt discharge valve (51) is smaller than the gap far from the dirt discharge valve (51).

7. The double-water-pump switching device for the filter press according to claim 1, wherein the tank body (41) is provided with a vent pipe (46) at a position far away from the ground, the vent pipe (46) is higher than the water outlet (43), the vent pipe (46) is communicated with the inside and the outside of the tank body, a pressure relief valve (461) is arranged in the vent pipe (46), and air in the tank body (41) flows out of the tank body through the pressure relief valve (461).

8. The double-water-pump switching device for the filter press is characterized in that a group of alarm devices (7) are arranged on each water supply pipeline (2), the alarm devices (7) are located between the communication pipeline (6) and the filter press (1), each group of alarm devices (7) comprises two buzzers (74), a rotating wheel (71), a connecting rod (72) and a group of opposite heavy weights (73) which are arranged in parallel, the rotating wheel (71) is parallel to the axis of each water supply pipeline (2), water in each water supply pipeline (2) drives the corresponding rotating wheel (71) to rotate, connecting rods (72) are coaxially and fixedly arranged on the rotating wheel (71), the corresponding connecting rods (72) penetrate through the walls of the corresponding water supply pipelines (2), the corresponding heavy weights (73) are connected to one ends of the corresponding connecting rods (72) far away from the corresponding rotating wheels (71), the corresponding heavy weights (73) can swing upwards and downwards in a direction of the axis of the corresponding connecting rods (72), the corresponding buzzers (74) are fixedly arranged at positions, close to the axes of the corresponding connecting rods (2), and when the corresponding heavy weights (74) are in a position, close to the corresponding alarm positions, corresponding to the corresponding heavy weights (73).