Support for realizing automatic start and stop of drainage pump and controlling water level by utilizing buoyancy

Abstract

The utility model relates to a support for realizing automatic start and stop of a draining pump and controlling water level by utilizing buoyancy, which comprises a rack, a travel switch, a dovetail groove, a first through hole, a fixing bolt, a floating body and a second through hole, and is formed by combining the floating body and the dovetail structure of the rack through the fixing bolt in a matching manner, a firm building or object is selected for fixing through screw holes in the lower portion of the rack, a travel switch is fixed on the rack through four screw holes, a contact of the travel switch faces downwards, the travel switch is connected with a power source and a draining pump, and the floating body moves up and down on the rack through buoyancy to drive the travel switch to be opened and closed. The support is matched with a travel switch and a drainage pump special for mines in the market to automatically control the water level and start and stop the drainage pump, and the safety requirement is met. The device is simple in structure, convenient to disassemble and assemble, safe and stable enough in use, capable of achieving unmanned operation and reducing capital investment, suitable for narrow and inconvenient-to-operate ditch environments, and suitable for various non-coal mine cable pipe ditches and capital construction ditch wells.

Description

Technical Field

[0001] This patent application belongs to the technical field of mine safety devices, and more specifically, it relates to a bracket that uses buoyancy to automatically start and stop a drainage pump and control the water level, and is mainly used in non-coal mines. Background Art

[0002] The cable trenches in underground distribution rooms, pump house rooms and mine infrastructure trenches are narrow. When defects occur after construction, they cannot be rectified later or are difficult to rectify, resulting in water holes and puddles. The Mine Safety Regulations require that water accumulation is not allowed in cable trenches, and critical facilities such as cables are easily soaked in water, which can easily pose a serious safety hazard. A small drainage pump is needed to temporarily drain the water out of the cable trench or lower the water level.

[0003] Due to the complex underground environment and the different degrees of water accumulation with seasonal changes, special personnel are needed to supervise, resulting in waste of manpower. At the same time, failure to shut down the water pump in time after drainage may cause damage to the water pump or cause fire and other accidents, which may easily lead to secondary disasters. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a bracket which utilizes buoyancy to realize automatic start and stop of a drainage pump and control the water level, and can realize automatic control of the water level and start and stop of the drainage pump, thereby meeting safety requirements.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is:

[0006] A bracket for realizing automatic start and stop of a drainage pump and controlling water level by utilizing buoyancy, comprising a frame fixed on a building, a plurality of travel switches fixed on the top of the frame, a dovetail groove arranged in the middle of the frame along the length direction of the frame, a first through hole arranged in the dovetail groove, a fixing bolt vertically arranged in the first through hole, a floating body slidably connected to the frame through the fixing bolt, and a second through hole arranged in the floating body, wherein the first through hole corresponds to the second through hole, and both the first through hole and the second through hole are for the fixing bolt to pass through;

[0007] The travel switch is connected to a power supply and a drainage pump. The switch contacts of the travel switch are facing downward. The floating body is made of lightweight material. The dovetail fit clearance between the floating body and the frame is 0.1~0.8mm. After the floating body moves up and down along the frame, the end face of the floating body drives the opening and closing of the travel switch.

[0008] Furthermore, the lower part of the frame is fixed to the building through two screw holes, screws are arranged in the screw holes, and the frame is made of a 2-3 mm thick stamped steel plate in one piece.

[0009] Furthermore, the lower part of the frame is a bent structure.

[0010] Furthermore, the dovetail angle of the frame dovetail groove is 55°~60°, the dovetail angle of the floating body is also 55°~60°, and the matching clearance between the floating body and the frame dovetail is 0.2~0.5mm.

[0011] Furthermore, the floating body is made of plastic and has a dovetail angle of 55° to 60°.

[0012] Furthermore, the strength of the fixing bolt is greater than grade 8.8, its service length is 2 mm greater than the matching length of the frame and the floating body, and its nominal diameter is 0.5 mm less than the width of the first through hole or the second through hole.

[0013] Furthermore, the first through hole and the second through hole are both in the shape of elongated strips.

[0014] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are:

[0015] This device comprehensively utilizes the main structure, which is composed of a floating body and a frame dovetail structure combined by fixing bolts. A solid building or object is selected for fixing through two screw holes at the bottom of the frame. A travel switch is fixed on the frame through four screw holes, with the switch contacts facing downward. The travel switch is connected to a power supply and a drainage pump. The buoyancy is used to make the floating body move up and down on the frame to drive the opening and closing of the travel switch, thereby realizing the water level control of the drainage pump and the construction of automatic start and stop, thereby ensuring safe and stable use.

[0016] The safety device of this patent utilizes buoyancy to automatically start and stop the drainage pump and control the water level. It has the characteristics of simple structure, replaceable parts and low cost, and is very suitable for use in non-coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the device.

[0018] Figure 2 It is a schematic diagram of the top view of the structure of the device.

[0019] Figure 3 It is a side view structural schematic diagram of the device.

[0020] Figure 4 It is a schematic diagram of the side cross-sectional structure of the device.

[0021] Among them: a frame 1, a floating body 2, a fixing bolt 3, a travel switch 4, a power supply 5, a drainage pump 6, and a first through hole 7. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the embodiments.

[0023] A bracket that uses buoyancy to automatically start and stop a drainage pump and control the water level, such as Figure 1, Figure 2 , including a frame 1 fixed on a building, a plurality of travel switches 4 fixed on the top of the frame 1, a dovetail groove arranged in the middle of the frame 1 along the length direction of the frame 1, a first through hole 7 arranged in the dovetail groove, a fixing bolt 3 arranged vertically in the first through hole 7, a floating body 2 slidably connected to the frame 1 through the fixing bolt 3, and a second through hole arranged in the floating body 2, the first through hole 7 corresponds to the second through hole (not shown in the figure), and the first through hole 7 and the second through hole are both for the fixing bolt 3 to pass through. During processing, the first through hole 7 and the second through hole are both long strips, and the specifications of the two are the same, and the fixing bolt 3 can pass through after overlapping.

[0024] The travel switch 4 is connected to a power source 5 and a drainage pump 6, the switch contact of the travel switch 4 is downward, the floating body 2 is made of a lightweight material, the dovetail fit clearance between the floating body 2 and the frame 1 is 0.1-0.8 mm, and after the floating body 2 moves up and down along the frame 1, the end surface of the floating body 2 drives the opening and closing of the travel switch 4. The number of travel switches 4 can be 4, all of which are connected to a power source 5 and a drainage pump 6, and as long as one of the travel switches 4 senses a signal, the power source 5 and the drainage pump 6 can be activated.

[0025] The lower part of the frame 1 is fixed to the building through two screw holes, and screws are arranged in the screw holes. The frame 1 is made of a 2-3 mm thick stamped steel plate in one piece. Figure 3-Figure 4 The lower part of the frame 1 is designed as a bent structure, which is convenient for installation on a wall or a building.

[0026] The dovetail angle of the dovetail groove of the frame 1 is 55°~60°, the dovetail angle of the floating body 2 is also 55°~60°, and the dovetail matching clearance between the floating body 2 and the frame 1 is 0.2~0.5mm. The floating body 2 is made of plastic or foam, and its dovetail angle is 55°~60°.

[0027] The strength of the fixing bolt 3 is greater than grade 8.8, its service length is 2 mm greater than the matching length of the frame 1 and the floating body 2, and its nominal diameter is 0.5 mm less than the width of the first through hole 7 or the second through hole.

[0028] Figure 1-Figure 4 As shown in the figure, the frame 1 and the floating body 2 are installed in coordination through the dovetail mechanism stamped by the frame 1, and locked with the fixing bolts 3 to ensure that after the connection, the floating body 2 can move up and down smoothly under the action of buoyancy through the dovetail structure of the frame 1 to form separation and connection with the travel switch installed on the frame, thereby realizing the automatic start and stop of the drainage pump and the water level control.

[0029] The working principle of the device is as follows: the floating body 2 and the frame 1 move smoothly under the action of buoyancy through the dovetail structure of the frame 1 and contact the travel switch 4 installed on the frame 1 to drive the control circuit to open and close, thereby realizing automatic start and stop of the drainage pump 6 and water level control.

[0030] The utility model has a simple structure and is easy to assemble and disassemble. It is safe and stable enough in use, can realize unmanned operation, optimize personnel allocation, reduce capital investment, is suitable for narrow and inconvenient trench environments, is suitable for various types of non-coal mine cable trenches, infrastructure trenches and wells, and can be promoted for use.

Claims

1. A bracket that uses buoyancy to automatically start and stop a drainage pump and control the water level, characterized in that: The invention comprises a frame (1) fixed on a building, a plurality of travel switches (4) fixed on the top of the frame (1), a dovetail groove arranged in the middle of the frame (1) along the length direction of the frame (1), a first through hole (7) arranged in the dovetail groove, a fixing bolt (3) arranged vertically in the first through hole (7), a floating body (2) slidably connected to the frame (1) via the fixing bolt (3), and a second through hole arranged in the floating body (2), wherein the first through hole (7) corresponds to the second through hole, and the fixing bolt (3) is passed through the first through hole (7) and the second through hole; The travel switch (4) is connected to a power source (5) and a drainage pump (6). The switch contact of the travel switch (4) is downward. The floating body (2) is made of a lightweight material. The dovetail fit clearance between the floating body (2) and the frame (1) is 0.1-0.8 mm. After the floating body (2) moves up and down along the frame (1), the end surface of the floating body (2) drives the travel switch (4) to open and close.

2. A bracket for automatically starting and stopping a drainage pump and controlling the water level by utilizing buoyancy according to claim 1, characterized in that: The lower part of the frame (1) is fixed to the building through two screw holes, and screws are arranged in the screw holes. The frame (1) is made of a 2-3 mm thick stamped steel plate in one piece.

3. A bracket for automatically starting and stopping a drainage pump and controlling the water level by utilizing buoyancy according to claim 2, characterized in that: The lower part of the frame (1) is a bent structure.

4. A bracket for automatically starting and stopping a drainage pump and controlling the water level by utilizing buoyancy according to claim 1, characterized in that: The dovetail angle of the dovetail groove of the frame (1) is 55° to 60°, the dovetail angle of the floating body (2) is also 55° to 60°, and the dovetail matching clearance between the floating body (2) and the frame (1) is 0.2 to 0.5 mm.

5. A bracket for automatically starting and stopping a drainage pump and controlling the water level by utilizing buoyancy according to claim 4, characterized in that: The floating body (2) is made of plastic and has a dovetail angle of 55° to 60°.

6. A bracket for automatically starting and stopping a drainage pump and controlling the water level by utilizing buoyancy according to any one of claims 1 to 5, characterized in that: The fixing bolt (3) has a strength greater than grade 8.8, a service length greater than the matching length of the frame (1) and the floating body (2) by 2 mm, and a nominal bolt diameter less than the width of the first through hole (7) or the second through hole by 0.5 mm.

7. A bracket for automatically starting and stopping a drainage pump and controlling the water level by utilizing buoyancy according to claim 6, characterized in that: The first through hole (7) and the second through hole are both in the shape of long strips.

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