Closed calcium carbide furnace cooling water branch pipe flow switch

Abstract

The utility model belongs to the technical field of flow switches, and particularly relates to a closed calcium carbide furnace cooling water branch pipe flow switch which comprises a flow branch pipe body, a flow switch body is arranged in the middle of the upper side of the flow branch pipe body, and a protective shell is installed on the inner wall of the flow branch pipe body through a supporting rod. A motor is fixedly mounted on the left side wall of the inner side of the protective shell, an output shaft of the motor is rotationally connected with the protective shell, a fixing disc is fixedly connected to the inner wall of the flow branch pipe body and located on the right side of the protective shell, the output shaft of the motor is rotationally connected with the fixing disc, and a filter screen is fixedly connected to the interior of the fixing disc; the outer side of an output shaft of the motor is slidably sleeved with a movable cylinder. By pushing the end plate to move downwards, the limiting rod is driven to move, the spring deforms, finally, the limiting rod is separated from the inserting rod, the mounting plate can be rapidly disassembled, then the flow sensor is rapidly disassembled, and maintenance and use of operators are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of flow switches, in particular to a closed calcium carbide furnace cooling water branch pipe flow switch. Background Art

[0002] Calcium carbide is the main raw material for the production of polyvinyl alcohol by the calcium carbide process, and a large amount of acetylene gas remains in the calcium carbide slag slurry produced by the hydrolysis of calcium carbide. The composition of calcium carbide slag slurry is 1.74% silicon dioxide, 72.23% iron oxide, 3.71% aluminum oxide, 1.01% calcium oxide, and 5.64% magnesium oxide. Combined with the test results, it is judged that the main substance wrapped in the magnetic piston and spring of the flow switch is iron oxide, which is caused by the corrosion of the water distributor process pipeline. The spring and piston are wrapped by impurities, resulting in a smaller stroke of the piston activity, and the flow switch indication value shows the maximum. Once the water leakage cannot be alarmed in time, if the cooling water enters the calcium carbide furnace, an explosion accident is very likely to occur. The function of the flow switch of the cooling water branch pipe of the closed calcium carbide furnace is to measure the flow of cooling water in the branch pipe. The flow rate can be determined by measuring the speed or pressure of the water flow.

[0003] The utility model patent with announcement number CN217058909U discloses a target flow sensor, including a measuring tube, a sleeve, a digital display housing, a force sensor, a target rod and a target plate. An upper support seat is fixed to the bottom of the sleeve, and the top of the sleeve is fixed to the digital display housing. The upper support seat is fixed to the lower support seat at the top of the measuring tube by bolts. The inner wall of the sleeve fixes the top of the force sensor through a partition. A signal amplifying rod is fixed to the bottom of the force sensor, and the bottom of the signal amplifying rod is fixed to the top of the target rod. The target plate is fixed to the side of the target rod facing the water inlet through a connecting rod. A protective plate is provided inside the sleeve, and a pad is fixed to the side of the bottom of the protective plate facing the target rod. The patent supports and protects the target rod to prevent the target rod from breaking, so that the target rod and the target plate can work stably within a safe range, and it is convenient to replace and clean the target rod and the target plate inside the measuring tube.

[0004] However, the existing closed calcium carbide furnace cooling water branch flow switch still has certain shortcomings: first, the existing closed calcium carbide furnace cooling water branch flow switch mostly uses bolt installation to fix the flow sensor, which makes it difficult for operators to disassemble and assemble the flow sensor, making it inconvenient to repair and use it;

[0005] Secondly, most of the existing closed calcium carbide furnace cooling water branch flow switches simply circulate the fluid through the flow branch body. Since the fluid contains a certain amount of impurities, long-term use will cause measurement errors. Utility Model Content

[0006] The utility model aims to provide a closed branch flow switch for cooling water of a calcium carbide furnace, which solves the problem that most of the existing branch flow switches for cooling water of a calcium carbide furnace use bolts to fix the flow sensor, which makes it difficult for operators to disassemble and assemble the flow sensor, and is inconvenient to repair and use it; and solves the problem that most of the existing branch flow switches for cooling water of a calcium carbide furnace simply circulate the fluid through the flow branch body, and because the fluid contains a certain amount of impurities, long-term use will cause measurement errors.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a closed calcium carbide furnace cooling water branch flow switch, comprising a flow branch body, a flow switch body is arranged in the middle of the upper side of the flow branch body, a protective shell is installed on the inner wall of the flow branch body through a support rod, a motor is fixedly installed on the inner left wall of the protective shell, the output shaft of the motor is rotatably connected to the protective shell, a fixed disk is fixedly connected to the inner wall of the flow branch body and located on the right side of the protective shell, the output shaft of the motor is rotatably connected to the fixed disk, a filter is fixedly connected inside the fixed disk, a moving cylinder is slidably sleeved on the outer side of the output shaft of the motor, a slider is fixedly connected to the inner wall of the moving cylinder, the slider is slidably connected to the output shaft of the motor, an elastic member is bonded to the right end of the slider, and the other end of the elastic member is bonded to the output shaft of the motor, two symmetrically distributed fixed rods are fixedly connected to the surface of the moving cylinder, each of the fixed rods is fixedly connected to the surface of bristles, the bristles are in contact with the filter, and a disassembly and assembly mechanism is arranged inside the flow branch body.

[0008] Preferably, a plurality of the filter screens are provided, and the plurality of the filter screens are arranged in a circular array on the fixed disk. Through the provision of the filter screens, impurities in the fluid can be filtered out.

[0009] Preferably, a plurality of the bristles are provided, and the plurality of the bristles are evenly distributed on the fixing rod. Through the provision of the bristles, impurities attached to the filter screen can be cleaned.

[0010] Preferably, the disassembly and assembly mechanism includes a fixing ring, an inner wall of the flow branch pipe body is fixedly connected with a fixing ring, the left side of the fixing ring contacts with a mounting plate, a flow sensor is fixedly installed inside the mounting plate, an insertion rod is fixedly connected inside the mounting plate, the insertion rod is slidably connected to the fixing ring, an end plate is slidably connected inside the fixing ring, the upper end of the end plate is fixedly connected with a limiting rod, the limiting rod is slidably connected to the fixing ring, the limiting rod is slidably connected to the insertion rod, the end plate is pushed downward to drive the limiting rod to move, the spring is deformed, and finally the limiting rod is separated from the insertion rod, and then the mounting plate is pulled to move in a direction away from the fixing ring to drive the insertion rod to move, and finally the insertion rod is separated from the fixing ring, and then the flow sensor is quickly removed to facilitate maintenance and use by operators.

[0011] Preferably, two of the insertion rods are provided, and the two insertion rods are symmetrically distributed on the mounting plate. Through the provision of the insertion rods, the mounting plate can be installed and used.

[0012] Preferably, a spring is welded to the lower end of the end plate, and the other end of the spring is welded to a fixing ring. By providing the spring, the end plate can be connected for use.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model pushes the end plate downward to drive the limit rod to move, and the spring is deformed, and finally the limit rod is separated from the plug rod, so that the mounting plate can be quickly disassembled, and then the flow sensor can be quickly disassembled, which is convenient for maintenance and use by operators.

[0015] 2. The utility model can filter out impurities in the fluid through the setting of the filter. Under the action of the motor, output shaft, slider and other structures, the fixed rod can be driven to rotate, thereby driving the bristles to slide along the surface of the filter to clean the impurities attached to the filter. Under the deformation action of the elastic part, the bristles can be pushed to always contact the filter to ensure the cleaning effect of the bristles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0017] Figure 2 For the utility model Figure 1 A partially cutaway stereogram of

[0018] Figure 3 For the utility model Figure 1 A front cross-sectional view of

[0019] Figure 4 For the utility model Figure 3 A magnified view of the fixed disk;

[0020] Figure 5 For the utility model Figure 4 A magnified image of point A;

[0021] Figure 6 For the utility model Figure 2 Enlarged view of the retaining ring.

[0022] Figure 7 For the utility model Figure 3 Enlarged view of point B.

[0023] In the figure: 1. flow branch pipe body; 2. flow switch body; 3. protective shell; 4. motor; 5. fixed plate; 6. filter screen; 7. moving cylinder; 71. slider; 72. elastic member; 8. fixed rod; 9. disassembly and assembly mechanism; 91. fixed ring; 92. mounting plate; 921. flow sensor; 93. plug rod; 94. end plate; 95. limit rod; 96. spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5, a closed calcium carbide furnace cooling water branch flow switch, including a flow branch body 1, a flow switch body 2 is arranged in the middle of the upper side of the flow branch body 1, a protective shell 3 is installed on the inner wall of the flow branch body 1 through a support rod, a motor 4 is fixedly installed on the inner left wall of the protective shell 3, the output shaft of the motor 4 is rotatably connected to the protective shell 3, a fixed disk 5 is fixedly connected to the inner wall of the flow branch body 1 and located on the right side of the protective shell 3, the output shaft of the motor 4 is rotatably connected to the fixed disk 5, a filter screen 6 is fixedly connected inside the fixed disk 5, a plurality of filter screens 6 are arranged, and a plurality of filter screens 6 are arranged in a circular array on the fixed disk 5. Through the setting of the filter screen 6, impurities in the fluid can be filtered out, a moving cylinder 7 is slidably sleeved on the outer side of the output shaft of the motor 4, a slider 71 is fixedly connected to the inner wall of the moving cylinder 7, the slider 71 is slidably connected to the output shaft of the motor 4, an elastic member 72 is bonded to the right end of the slider 71, and the other end of the elastic member 72 is bonded to the output shaft of the motor 4, and the moving cylinder The surface of 7 is fixedly connected to two symmetrically distributed fixed rods 8, and the surface of each fixed rod 8 is fixedly connected to bristles, which are in contact with the filter screen 6. There are multiple bristles, and the multiple bristles are evenly distributed on the fixed rod 8. Through the setting of the bristles, impurities attached to the filter screen 6 can be cleaned. Through the setting of the filter screen 6, impurities can be filtered out of the fluid flowing into the flow branch pipe body 1 to avoid the problem of metering error caused by impurities. The motor 4 is started to drive the output shaft to rotate, so as to drive the slider 71 to rotate, and then drive the moving cylinder 7 to rotate, and finally drive the fixed rod 8 to rotate, and when the fixed rod 8 rotates, the bristles can be driven to slide along the surface of the filter screen 6 to clean the impurities attached to the filter screen 6 to ensure the circulation effect of the filter screen 6. When the bristles are worn out and shortened due to long-term use, under the deformation action of the elastic member 72, the slider 71 can be pushed to drive the fixed rod 8 to move, so that the bristles are always in contact with the filter screen 6 to ensure the cleaning effect of the bristles.

[0026] See also Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7The flow branch pipe body 1 is provided with a disassembly mechanism 9 inside, and the disassembly mechanism 9 includes a fixing ring 91. The inner wall of the flow branch pipe body 1 is fixedly connected with the fixing ring 91. The left side of the fixing ring 91 contacts with a mounting plate 92. A flow sensor 921 is fixedly installed inside the mounting plate 92. A plug rod 93 is fixedly connected inside the mounting plate 92. The plug rod 93 is slidably connected to the fixing ring 91. Two plug rods 93 are provided. The two plug rods 93 are symmetrically distributed on the mounting plate 92. The mounting plate 92 can be installed and used by setting the plug rods 93. The fixing ring 91 is slidably connected to the inner wall of the flow branch pipe body 1. The upper end of the end plate 94 is fixedly connected to a limit rod 95 The limit rod 95 is slidably connected to the fixing ring 91, and the limit rod 95 is slidably connected to the insertion rod 93. A spring 96 is welded at the lower end of the end plate 94, and the other end of the spring 96 is welded to the fixing ring 91. Through the setting of the spring 96, the end plate 94 can be connected and used, and the end plate 94 is pushed down to drive the limit rod 95 to move, and the spring 96 is deformed, and finally the limit rod 95 is separated from the insertion rod 93, and then the mounting plate 92 is pulled to move in the direction away from the fixing ring 91 to drive the insertion rod 93 to move, and finally the insertion rod 93 is separated from the fixing ring 91, and then the flow sensor 921 is quickly removed, which is convenient for the maintenance and use of the operator.

[0027] The specific implementation process of the utility model is as follows: when it is necessary to use the flow switch of the cooling water branch pipe of the closed calcium carbide furnace, the impurities of the fluid flowing into the flow branch pipe body 1 can be filtered out through the setting of the filter screen 6 to avoid the problem of metering error caused by impurities, and the motor 4 is started to drive the output shaft to rotate, so as to drive the slider 71 to rotate, and then drive the moving cylinder 7 to rotate, and finally drive the fixed rod 8 to rotate, and when the fixed rod 8 rotates, the bristles can be driven to slide along the surface of the filter screen 6 to clean the impurities attached to the filter screen 6 to ensure the circulation effect of the filter screen 6. When the bristles are worn out and shortened due to long-term use, the elastic member 72 can be deformed to push the slider 71 to drive the fixed rod 8 to move, so that the bristles are always in contact with the filter screen 6 to ensure the cleaning effect of the bristles;

[0028] By pushing the end plate 94 downward to drive the limit rod 95 to move, the spring 96 is deformed, and finally the limit rod 95 is separated from the insertion rod 93, and then the mounting plate 92 is pulled to move in the direction away from the fixing ring 91 to drive the insertion rod 93 to move, and finally the insertion rod 93 is separated from the fixing ring 91, and then the flow sensor 921 is quickly removed to facilitate the maintenance and use by the operator.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A closed calcium carbide furnace cooling water branch pipe flow switch, comprising a flow branch pipe body (1), characterized in that: A flow switch body (2) is arranged in the middle of the upper side of the flow branch pipe body (1); a protective shell (3) is installed on the inner wall of the flow branch pipe body (1) via a support rod; a motor (4) is fixedly installed on the inner left wall of the protective shell (3); the output shaft of the motor (4) is rotatably connected to the protective shell (3); a fixed disk (5) is fixedly connected to the inner wall of the flow branch pipe body (1) and located on the right side of the protective shell (3); the output shaft of the motor (4) is rotatably connected to the fixed disk (5); a filter screen (6) is fixedly connected inside the fixed disk (5); the output shaft of the motor (4) is rotatably connected to the fixed disk (5); A moving cylinder (7) is slidably sleeved on the outer side of the shaft, a slider (71) is fixedly connected to the inner wall of the moving cylinder (7), the slider (71) is slidably connected to the output shaft of the motor (4), an elastic member (72) is bonded to the right end of the slider (71), the other end of the elastic member (72) is bonded to the output shaft of the motor (4), two symmetrically distributed fixed rods (8) are fixedly connected to the surface of the moving cylinder (7), each of the fixed rods (8) is fixedly connected to the surface of a brush, the brush is in contact with the filter (6), and a disassembly mechanism (9) is provided inside the flow branch pipe body (1).

2. The closed calcium carbide furnace cooling water branch pipe flow switch according to claim 1 is characterized in that: A plurality of filter screens (6) are provided, and the plurality of filter screens (6) are arranged in a ring array on the fixed disk (5).

3. The closed calcium carbide furnace cooling water branch pipe flow switch according to claim 1 is characterized in that: A plurality of the bristles are provided, and the plurality of the bristles are evenly distributed on the fixing rod (8).

4. The closed calcium carbide furnace cooling water branch pipe flow switch according to claim 1, characterized in that: The disassembly and assembly mechanism (9) comprises a fixing ring (91), the inner wall of the flow branch pipe body (1) is fixedly connected with the fixing ring (91), the left side of the fixing ring (91) contacts with a mounting plate (92), a flow sensor (921) is fixedly mounted inside the mounting plate (92), an insertion rod (93) is fixedly connected inside the mounting plate (92), the insertion rod (93) is slidably connected to the fixing ring (91), an end plate (94) is slidably connected inside the fixing ring (91), a limiting rod (95) is fixedly connected to the upper end of the end plate (94), the limiting rod (95) is slidably connected to the fixing ring (91), and the limiting rod (95) is slidably connected to the insertion rod (93).

5. The closed calcium carbide furnace cooling water branch pipe flow switch according to claim 4 is characterized in that: Two insertion rods (93) are provided, and the two insertion rods (93) are symmetrically distributed on the mounting plate (92).

6. The closed calcium carbide furnace cooling water branch pipe flow switch according to claim 4, characterized in that: A spring (96) is welded to the lower end of the end plate (94), and the other end of the spring (96) is welded to the fixing ring (91).

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