Automatic loading device for polyvinyl chloride powder tank car

Abstract

The utility model relates to the technical field of polyvinyl chloride production and processing, and discloses an automatic loading device for a polyvinyl chloride powder tank lorry, which is characterized in that a loading outlet of a transportation pipeline is arranged to be a flexible connection capable of automatically stretching and retracting and is additionally provided with an automatic control valve, and during on-site loading, a control box controls a telescopic cylinder to automatically stretch and opens the automatic control valve to load materials; after loading is completed, the control box controls the telescopic cylinder to automatically contract and close the automatic valve, and automation of groove type loading is improved; and a locking switch is arranged on the control box, so that after an operator reaches the control box and inserts a tank car key into the locking switch, the automatic control valve and the automatic telescopic unloader can be controlled, manual intervention is not needed, and the safety of the operator is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of polyvinyl chloride production and processing, and particularly relates to an automatic loading device for polyvinyl chloride powder tank trucks. Background Art

[0002] Polyvinyl chloride (PVC) is abbreviated as PVC in English. PVC is a polymer formed by the polymerization of vinyl chloride monomer (VCM) under the action of initiators such as peroxides and azo compounds or under the action of light and heat according to the free radical polymerization reaction mechanism. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively called vinyl chloride resins.

[0003] PVC is widely used. There are two types of PVC: rigid and flexible. Rigid polyvinyl chloride is used for building pipes and doors and windows. It is also used to manufacture plastic bottles, packaging, bank cards or membership cards. Adding plasticizers can make PVC softer and more elastic. It can be used for pipes, cable insulation, floors, signs, phonograph records, inflatable products and rubber substitutes.

[0004] In the existing process of loading polyvinyl chloride powder into tank trucks, the loading pipeline is controlled by a manual valve, and the output port of the pipeline uses a cloth bag soft connection. After the tank truck is in place, it is still necessary to manually tie the cloth bag to the tank truck, resulting in risks of material leakage and personnel safety during the loading process. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides an automatic loading device for polyvinyl chloride powder tank trucks. By setting the loading outlet of the pipeline as an automatically telescopic soft connection and adding an automatic control valve, during on-site loading, the control box is used to control the automatic elongation of the telescopic cylinder and open the automatic control valve for material loading. After the loading is completed, the control box controls the automatic contraction of the telescopic cylinder and closes the automatic valve, improving the automation of tank loading and ensuring the safety of loading personnel.

[0006] The utility model provides the following specific technical solutions:

[0007] An automatic loading device for polyvinyl chloride powder tank trucks includes a support base, a tank body is installed on the support base, one side of the tank body is communicated with a discharge pipeline, the end of the discharge pipeline is communicated with an automatic control valve, the bottom of the automatic control valve is communicated with an automatic telescopic discharger, and both the automatic control valve and the automatic telescopic discharger are electrically connected to a control box, and the control box is used to control the opening and closing of the automatic control valve and the automatic telescopic discharger.

[0008] Preferably, the automatic control valve is an electric full-bore ball valve, and the material is stainless steel.

[0009] Preferably, the sealing method of the automatic control valve is hard seal, and the pressure rating is class150.

[0010] Preferably, traffic lights are provided on the control box. When the automatic control valve is in the open state, the green light is on; when the automatic control valve is in the closed state, the red light is on.

[0011] Preferably, the automatic telescopic unloading device includes a connecting pipe. The top of the connecting pipe is communicated with the automatic control valve, the bottom of the connecting pipe is communicated with a docking flange, a telescopic cylinder support is installed at the bottom of the docking flange, a telescopic cylinder is telescopically installed on the telescopic cylinder support, a motor is fixedly installed on the telescopic cylinder support, the motor is electrically connected to the control box, and the motor is controlled to rotate forward or backward through the control box, thereby driving the telescopic cylinder to expand and contract.

[0012] Preferably, a telescopic inner cylinder is communicated inside the telescopic cylinder. A weight is arranged inside the telescopic inner cylinder. The weight is arranged at the bottom of the telescopic inner cylinder, and the side wall of the weight is fixedly connected with the inner wall of the telescopic inner cylinder. A pull rope is connected to the top of the weight;

[0013] A pulley is also installed on the telescopic cylinder support. A driving wheel is installed at the output end of the motor. The pull rope is fixedly connected to the driving wheel on the motor through the pulley. A pipeline outlet is arranged at the bottom of the gap between the telescopic cylinder and the telescopic inner cylinder. The polyvinyl chloride powder flows through the gap between the telescopic cylinder and the telescopic inner cylinder and flows out from the pipeline outlet.

[0014] Preferably, both the telescopic cylinder and the telescopic inner cylinder include a corrugated middle metal wall. A high-strength industrial canvas is attached to the inner surface of the middle metal wall, and a waterproof canvas is attached to the outer surface of the middle metal wall.

[0015] Preferably, the automatic telescopic unloading device is provided with a limit switch to limit the telescopic range of the telescopic cylinder to 500 - 1500 mm.

[0016] Preferably, the power of the motor is 0.55 kW, and the protection level is IP55.

[0017] The utility model has the following technical effects:

[0018] By setting the loading outlet of the transportation pipeline as an automatically telescopic flexible connection and adding an automatic control valve, during on-site loading, the telescopic cylinder is automatically extended and the automatic control valve is opened for material loading through the control box. After loading is completed, the control box controls the telescopic cylinder to automatically contract and closes the automatic valve, improving the automation of tank loading;

[0019] By setting a locking switch on the control box, when the operator reaches the control box and inserts the tank truck key into the locking switch, the automatic control valve and the automatic telescopic unloading device can be controlled, without manual intervention, ensuring personnel safety. Description of the Drawings

[0020] Figure 1 is a structural schematic diagram of the prior art of the utility model;

[0021] Figure 2 Structural schematic diagram of an embodiment of the present utility model;

[0022] Figure 3 Structural schematic diagram of the automatic telescopic discharging device in the extended state in an embodiment of the present utility model;

[0023] Figure 4 Structural schematic diagram of the automatic telescopic discharging device in the retracted state in an embodiment of the present utility model.

[0024] In the figure: 1 - support base; 2 - tank body; 3 - discharge pipeline; 4 - transportation pipe; 5 - manual valve; 6 - cloth bag; 7 - automatic control valve; 8 - automatic telescopic discharging device; 81 - connecting pipe; 82 - docking flange; 83 - telescopic cylinder support; 84 - telescopic cylinder; 85 - telescopic inner cylinder; 86 - pipeline outlet; 87 - motor; 871 - pulley; 88 - pulling rope; 89 - weight; 9 - control box. Specific implementation manner

[0025] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] As Figure 1 shown, the existing polyvinyl chloride powder loading device for tank trucks includes a support base 1, a tank body 2 is installed on the support base 1, one side of the tank body 2 is communicated with a discharge pipeline 3, the outlet of the discharge pipeline 3 is communicated with a transportation pipe 4, and the outlet of the transportation pipe is communicated with a manual valve 5 and a cloth bag 6. In the tank truck loading link of the existing polyvinyl chloride powder loading device, the loading pipeline is controlled by a manual valve, and the pipeline outlet adopts a soft connection with a cloth bag, and there are risks of material leakage and personnel safety during the tank truck loading process.

[0027] To solve the above problems, as Figure 2 shown, the present utility model discloses an automatic loading device for polyvinyl chloride powder tank trucks, which includes a support base 1, a tank body 2 is installed on the support base 1, one side of the tank body 2 is communicated with a discharge pipeline 3, the outlet of the discharge pipeline 3 is communicated with a transportation pipe 4, the end of the discharge pipeline is communicated with an automatic control valve 7, the bottom of the automatic control valve 7 is communicated with an automatic telescopic discharging device 8, and both the automatic control valve 7 and the automatic telescopic discharging device 8 are electrically connected to a control box 9, and the control box 9 is used to control the opening and closing of the automatic control valve 7 and the automatic telescopic discharging device 8.

[0028] In this embodiment, the automatic control valve 7 is an electric full-bore ball valve, the material is stainless steel, the sealing method of the automatic control valve 7 is hard seal, and the pressure rating is class150.

[0029] In this embodiment, traffic lights are arranged on the control box 9. When the automatic control valve 7 is in the open state, the green light is on; when the automatic control valve 7 is in the closed state, the red light is on.

[0030] As Figure 3As shown, in this embodiment, the automatic telescopic discharger 8 includes a connecting pipe 81. The top of the connecting pipe 81 is communicated with the automatic control valve 7, and the bottom of the connecting pipe 81 is communicated with a docking flange 82. A telescopic cylinder support 83 is installed at the bottom of the docking flange 82. A telescopic cylinder 84 is telescopically installed on the telescopic cylinder support 83. A motor 87 is fixedly installed on the telescopic cylinder support 83. The motor 87 is electrically connected to the control box 9. By controlling the control box 9, the motor 87 rotates forward or backward, and then drives the telescopic cylinder 84 to expand and contract.

[0031] Further, a telescopic inner cylinder 85 is communicated and arranged inside the telescopic cylinder 84. A weight 89 is arranged inside the telescopic inner cylinder 85. The weight 89 is arranged at the bottom of the telescopic inner cylinder 85, and the side wall of the weight 89 is fixedly connected to the inner wall of the telescopic inner cylinder 85. A pull rope 88 is connected to the top of the weight 89;

[0032] A pulley 871 is also installed on the telescopic cylinder support 83. A driving wheel is installed at the output end of the motor 87. The pull rope 88 is fixedly connected to the driving wheel on the motor 87 through the pulley 871. A pipeline outlet 86 is arranged at the bottom of the gap between the telescopic cylinder 84 and the telescopic inner cylinder 85. The polyvinyl chloride powder flows through the gap between the telescopic cylinder 84 and the telescopic inner cylinder 85 and flows out from the pipeline outlet 86.

[0033] When the motor 87 rotates, the weight 89 is pulled by the pull rope 88 to move upward along the axis of the telescopic cylinder 84 inside the telescopic cylinder 84, and then drives the telescopic cylinder 84 to contract; on the contrary, when the motor 87 rotates reversely, the weight 89 moves downward along the axis of the telescopic cylinder 84 under the action of its own gravity, and then drives the telescopic cylinder 84 to expand.

[0034] Both the telescopic cylinder 84 and the telescopic inner cylinder 85 include a corrugated middle metal wall, such as a stainless steel wall, or other thin metal walls with lower hardness, which is not limited here. A high-strength industrial canvas is attached to the inner surface of the middle metal wall, and a waterproof canvas is attached to the outer surface of the middle metal wall.

[0035] In this embodiment, the automatic telescopic discharger 8 is provided with a limit switch. The limit switch can be a position sensor for monitoring the telescopic position of the telescopic cylinder 84 and sending a sensing signal to the control box 9. The control unit of the control box 9 controls the start and stop of the motor 87 according to the electrical signal; it can also be a grating sensor for limiting the telescopic range of the telescopic cylinder 84; it can also be a mechanical switch device. When the telescopic cylinder 84 presses the mechanical switch device, the motor 87 stops rotating, and when the mechanical switch device is released, the motor 87 starts rotating, which is not limited here.

[0036] In this embodiment, the telescopic range of the telescopic cylinder 84 is 500 - 1500 mm.

[0037] In this embodiment, the power of the motor 87 is 0.55 kW, and the protection level is IP55.

[0038] In this embodiment, the control box 9 is provided with a locking switch. When the tanker key is inserted into the locking switch, unlocking can be achieved, and then the control box 9 can control the automatic control valve 7 and the automatic telescopic unloading device 8. When the tanker key is pulled out of the locking switch, locking is achieved, and the control box 9 cannot control the automatic control valve 7 and the automatic telescopic unloading device 8, so as to ensure personnel safety.

[0039] The control box 9 also reserves DCS (Distributed Control System) contacts for controlling the opening or closing of the automatic control valve 7, and also includes test points for the opening of the motor 87, the closing of the motor 87, the remote control of the motor 87, the fault detection of the automatic telescopic unloading device 8, the up-to-position of the telescopic cylinder 84, and the down-to-position of the telescopic cylinder 84.

[0040] The working principle of the present utility model is as follows:

[0041] Before the tanker arrives, the automatic control valve 7 remains closed, and the telescopic cylinder 84 is in a contracted state.

[0042] After the tanker arrives at the predetermined position, the operator arrives at the control box 9, inserts the tanker key into the locking switch of the control box 9, controls the motor 87 to rotate, releases the pull rope 88, and under the action of the self-gravity of the weight 89, drives the telescopic cylinder 84 to extend into the feed inlet of the tanker tank. Then the automatic control valve 7 is opened, and the polyvinyl chloride powder flows through the gap between the telescopic cylinder 84 and the inner telescopic cylinder 85 and flows into the tanker through the pipeline outlet 86, starting the loading process without manual intervention, ensuring personnel safety.

[0043] After the loading is completed, operate the control box 9 to close the automatic control valve 7 and control the motor 87 to rotate in the reverse direction, and then drive the telescopic cylinder 84 to contract to the initial position.

[0044] For those of ordinary skill in the art, according to the teachings of the present utility model, without departing from the principles and spirit of the present utility model, the changes, modifications, substitutions, and variations made to the embodiments still fall within the protection scope of the present utility model.

Claims

1. An automatic loading device for a PVC powder tanker, comprising a support base (1), on which a tank body (2) is installed, and a discharge pipeline (3) is communicated with one side of the tank body (2), characterized in that, The end of the discharge pipeline (3) is connected to a self-control valve (7), the bottom of the self-control valve (7) is connected to an automatic telescopic unloader (8), and both the self-control valve (7) and the automatic telescopic unloader (8) are electrically connected to a control box (9). The control box (9) is used to control the opening and closing of the self-control valve (7) and the automatic telescopic unloader (8).

2. The automatic loading device for a PVC powder tanker according to claim 1, wherein The self-control valve (7) is an electric full-bore ball valve, and the material is stainless steel.

3. The automatic loading device for a PVC powder tanker according to claim 2, wherein, The sealing method of the self-control valve (7) is hard seal, and the pressure rating is class150.

4. The automatic loading device for a PVC powder tanker according to claim 3, wherein The control box (9) is provided with red and green lights. When the self-control valve (7) is in the open state, the green light is on; when the self-control valve (7) is in the closed state, the red light is on.

5. An automatic loading device for a polyvinyl chloride powder tanker according to claim 1, characterized in that, The automatic telescopic unloader (8) includes a connecting pipe (81). The top of the connecting pipe (81) is connected to the self-control valve (7), the bottom of the connecting pipe (81) is connected to a docking flange (82), a telescopic cylinder support (83) is installed at the bottom of the docking flange (82), a telescopic cylinder (84) is telescopically installed on the telescopic cylinder support (83), a motor (87) is fixedly installed on the telescopic cylinder support (83), the motor (87) is electrically connected to the control box (9), and the control box (9) is used to control the forward or reverse rotation of the motor (87), thereby driving the telescopic movement of the telescopic cylinder (84).

6. The automatic loading device for a PVC powder tank truck according to claim 5, characterized in that A telescopic inner cylinder (85) is connected and arranged inside the telescopic cylinder (84). A weight (89) is arranged inside the telescopic inner cylinder (85). The weight (89) is arranged at the bottom of the telescopic inner cylinder (85), and the side wall of the weight (89) is fixedly connected to the inner wall of the telescopic inner cylinder (85). A pull rope (88) is connected to the top of the weight (89); A pulley (871) is also installed on the telescopic cylinder support (83). A driving wheel is installed at the output end of the motor (87). The pull rope (88) is fixedly connected to the driving wheel on the motor (87) via the pulley (871). A pipeline outlet (86) is arranged at the bottom of the gap between the telescopic cylinder (84) and the telescopic inner cylinder (85). The PVC powder flows through the gap between the telescopic cylinder (84) and the telescopic inner cylinder (85) and flows out from the pipeline outlet (86).

7. An automatic loading device for a PVC powder tanker according to claim 6, characterized in that, Both the telescopic cylinder (84) and the telescopic inner cylinder (85) include a corrugated middle metal wall. A high-strength industrial canvas is attached to the inner surface of the middle metal wall, and a waterproof canvas is attached to the outer surface of the middle metal wall.

8. An automatic loading device for a PVC powder tank truck according to claim 7, characterized in that The automatic telescopic unloader (8) is provided with a limit switch to limit the telescopic range of the telescopic cylinder (84) to 500 - 1500 mm.

9. The automatic loading device for a PVC powder tanker according to claim 8, wherein, The power of the motor (87) is 0.55 kW, and the protection level is IP55.

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