Discharging device of tank car

Abstract

The utility model provides a unloading device of a tank car, which can solve the problem that when an existing device is adopted to unload a medium, impurities in the medium are easily clamped on a sealing surface of a ball valve, so that a sealing structure of the ball valve is scratched in the opening and closing process, and the ball valve has a leakage fault. The device comprises an opening and closing locking module and a stop valve with a reset spring, the opening and closing locking module comprises an opening and closing unit, a supporting seat and a locking unit, the opening and closing unit comprises a transmission shaft and an operating handle, one end of the transmission shaft is connected with a driving mechanism, and the other end of the transmission shaft penetrates through the supporting seat and is provided with a connecting and disconnecting structure; the connecting and separating structure is sleeved with the operating handle, so that the operating handle is connected with or separated from the transmission shaft, the supporting seat is provided with a first limiting gear and a second limiting gear, and the first limiting gear and the second limiting gear are located above the operating handle when the stop valve is in a closed state and below the operating handle when the stop valve is in a maximum opening state respectively; the locking device is used for locking the operating handle when the stop valve is in an open state.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of lower unloading device of storage container, specifically to a kind of lower unloading device of tank car. BACKGROUND

[0002] Under the impetus of industrial revolution, a large number of liquid media need to be transported by tank car, and the early liquid medium loading and unloading mode is mainly based on loading and unloading, however, this mode has many problems in practice, on the one hand, for large-capacity tank car, the efficiency is low when using unloading mode to unload medium; on the other hand, there are safety hazards and medium leakage risks in the unloading process. In order to improve the efficiency and safety of tank car unloading medium, the lower unloading device is usually used to unload medium from the bottom of the tank car, the existing lower unloading device of tank car includes a ball valve and two transmission shafts, the ball valve is connected with the tank body bottom flange, the two transmission shafts are located on both sides below the tank body, one end of the two transmission shafts is connected with the drive shaft of the ball valve, and when unloading the medium in the tank body, the ball valve is operated remotely by using a wrench matched with the other end of the transmission shaft on any side of the tank body. However, since the opening and closing function of the ball valve is realized based on the relative sliding between the sealing ring and the sealing surface, therefore, when unloading the medium in the tank body by using the existing lower unloading device of tank car, the problem is that the impurities in the medium, such as sand and gravel, are easy to be stuck in the sealing surface of the ball valve, which can easily scratch the sealing structure of the ball valve during opening and closing, and further cause leakage failure of the ball valve. SUMMARY

[0003] The utility model aims at solving the technical problem that when unloading the medium in the tank body by using the existing lower unloading device of tank car, the impurities in the medium are easy to be stuck in the sealing surface of the ball valve, which can easily scratch the sealing structure of the ball valve during opening and closing, and further cause leakage failure of the ball valve, and provides a kind of lower unloading device of tank car.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A kind of lower unloading device of tank car, which is characterized in that:

[0006] It comprises two oppositely arranged opening and closing locking modules and a stop valve provided between the two opening and closing locking modules, the stop valve is used to connect with the tank body bottom flange of the tank car to be unloaded;

[0007] Each opening and closing locking module comprises an opening and closing unit, a support seat and a locking unit;

[0008] The opening and closing unit comprises a transmission shaft and an operating handle; one end of the transmission shaft is connected with a driving mechanism of the stop valve, the other end of the transmission shaft is arranged through the support seat and the end portion is coaxially provided with a connecting and disengaging structure; the operating handle is sleeved on the connecting and disengaging structure, and is used for connecting or disengaging the operating handle from the transmission shaft.

[0009] The support seat is provided with a first limiting stop and a second limiting stop; the first limiting stop is located above the position of the operating handle when the stop valve is in the closed state, and the second limiting stop is located below the position of the operating handle when the stop valve is in the maximum open state, and is used for limiting the rotation angle of the operating handle.

[0010] The locking unit comprises a limiting handle and at least one limiting support; the limiting support is arranged on the support seat, the limiting handle is arranged through the support seat and is in sliding fit with the support seat, and the limiting support and the limiting handle are located on the inner side of the plane where the operating handle is located when the stop valve is in the open state, and are used for locking the operating handle when the stop valve is in the open state.

[0011] Further, the support seat is provided with a handle mounting box on the side wall close to the stop valve;

[0012] The limiting handle comprises a limiting vertical rod, a compression spring and at least one limiting horizontal rod;

[0013] The side wall of the limiting vertical rod is connected with one end of the limiting horizontal rod, the other end of the limiting horizontal rod is arranged through the support seat and the handle mounting box in sequence and is in sliding fit with the support seat and the handle mounting box; the side wall of the limiting horizontal rod is provided with a limiting protruding ring located in the handle mounting box;

[0014] The compression spring is sleeved outside the limiting horizontal rod, one end of the compression spring is in abutment with the side wall of the support seat, and the other end is in abutment with the limiting protruding ring.

[0015] Further, the support seat is provided with a handle mounting box on the side wall close to the stop valve;

[0016] The limiting handle comprises a limiting vertical rod and at least one limiting inclined rod;

[0017] The side wall of the limiting vertical rod is connected with one end of the limiting inclined rod, and the other end of the limiting inclined rod is arranged through the support seat and the handle mounting box in sequence and is in sliding fit with the support seat and the handle mounting box.

[0018] Further, the connecting and disengaging structure comprises a cylindrical segment and a polygonal segment;

[0019] The cylindrical segment and the polygonal segment are coaxially arranged on the end portion of the other end of the transmission shaft in sequence in the direction away from the transmission shaft; the diameter of the inscribed circle of the polygonal segment is greater than the outer diameter of the cylindrical segment; the end portion of the polygonal segment is provided with a limiting stop ring.

[0020] The action end of the operation handle is provided with a mounting hole matched with the polygonal section, which is used to connect the operation handle with the transmission shaft, so as to realize the opening and closing control of the stop valve by the operation handle; the operation handle is sleeved on the cylindrical section through the mounting hole, which is used to disconnect the operation handle from the transmission shaft.

[0021] Further, the support seat is further provided with a U-shaped clamping groove; the U-shaped clamping groove is used to place the operation handle in the disconnection state with the transmission shaft, and the U-shaped clamping groove is located on the inner side of the plane where the operation handle in the connection state with the transmission shaft is located.

[0022] Further, the limiting supports are two, one of which is arranged close to the connection and disconnection structure, and the other of which is arranged below the limiting handle.

[0023] The side wall of the limiting cross rod is further provided with an arc-shaped limiting boss, which is located on the side of the support seat away from the stop valve.

[0024] The utility model discloses the beneficial effect:

[0025] 1. The utility model provides a tank car's unloading device, wherein, compared with the ball valve, since the opening and closing process of the stop valve does not involve the problem of "relative sliding between the sealing ring and the sealing surface", so the sealing surface will not be scratched by the sand and other impurities in the tank medium, and the stop valve in the utility model has a restoring spring, the restoring spring has a stronger compensation effect on the wear of the valve sealing element, so that the sealing property of the stop valve is almost not affected by the wear of the valve sealing element, and therefore the utility model can avoid the problem of valve leakage failure.

[0026] 2. In the utility model, the connection and disconnection structure can realize the connection or disconnection of the operation handle and the transmission shaft, so that the opening and closing and locking operation of the stop valve can be performed on any side of the tank car, and is not affected by the related structure such as the operation handle on the other side.

[0027] 3. The utility model is provided with the limiting handle and the limiting support, which can lock the operation handle, and the locking operation is not affected by the pressing force of the restoring spring transmitted to the operation handle (that is, in the locking operation, the limiting handle is not affected by the pressing force, and the operation handle is affected by the pressing force).

[0028] 4. In the utility model, the limiting handle comprises a compression spring, so that the limiting handle has an automatic reset function, which is convenient and reliable to use.

[0029] 5. In the utility model, the limiting handle comprises a limiting inclined rod, which realizes the automatic reset function of the limiting handle by gravity.

[0030] 6. The utility model discloses a cylindrical section and U type clamping groove are set up, therefore handle will not produce vibration interference to the stop valve in the closed state (that is: when the stop valve is in the closed state, handle and transmission shaft are in the state of disengagement between, and handle is placed in U type clamping groove, and the vibration of handle itself that runs with tank car will not be conducted to the stop valve).

[0031] 7. The arc-shaped limiting boss in the utility model is beneficial to operating the limiting handle. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a three-dimensional structure schematic diagram of the tank car's unloading device of the utility model;

[0033] Figure 2 is the structure schematic diagram of the opening and closing locking module in the embodiment of the utility model Figure 1 (handle is in the locked state);

[0034] Figure 3 is the structure schematic diagram of the opening and closing locking module in the embodiment of the utility model Figure 2 (handle is in the unlocked state);

[0035] Figure 4 is the installation structure schematic diagram of the limiting handle, handle installation box and support seat in the embodiment of the utility model;

[0036] Figure 5 is the installation structure schematic diagram of the limiting handle, handle installation box and support seat in other embodiments of the utility model;

[0037] Figure 6 is the structure schematic diagram of handle, connection disengagement structure and transmission shaft in the embodiment of the utility model;

[0038] Figure 7 is the structure schematic diagram of handle in the embodiment of the utility model;

[0039] Figure 8 is the structure schematic diagram of the opening and closing locking module when being in the initial state in the embodiment of the utility model;

[0040] Figure 9 is Figure 8 the plan view;

[0041] Figure 10 is the structure schematic diagram of the opening and closing locking module when the stop valve is in the maximum opening state in the use process of the embodiment of the utility model;

[0042] Figure 11 is the structure schematic diagram of the opening and closing locking module when handle is in the locked state in the use process of the embodiment of the utility model;

[0043] Figure 12 Figure 2 is a structural schematic diagram of the opening and closing locking module when the stop valve is in the closed state in the use process of the embodiment of the utility model.

[0044] Mark explanation:

[0045] 1-opening and closing locking module, 2-stop valve, 3-supporting seat, 4-opening and closing unit, 41-transmission shaft, 42-operation handle, 43-mounting hole, 5-locking unit, 52-limiting handle, 53-limiting support, 6-connection and separation structure, 61-cylinder section, 62-multiple prism section, 63-limiting stop ring, 7-first limiting stop, 8-handle mounting box, 9-second limiting stop, 10-limiting vertical rod, 11-compression spring, 12-limiting horizontal rod, 13-limiting inclined rod, 14-U-shaped clamping groove, 15-arc-shaped limiting boss, 16-limiting convex ring. Specific implementation

[0046] As shown in Figure 1 , a tank car unloading device, comprising two oppositely arranged opening and closing locking modules 1 and a stop valve 2 with a restoring spring arranged between the two opening and closing locking modules 1, the stop valve 2 is used for connecting with the flange at the bottom of the tank body of the tank car to be unloaded. Specifically, as shown in Figures 1-7 , each opening and closing locking module 1 comprises an opening and closing unit 4, a supporting seat 3 and a locking unit 5; wherein the opening and closing unit 4 comprises a transmission shaft 41 and an operation handle 42, one end of the transmission shaft 41 is connected with the driving mechanism of the stop valve 2, the other end of the transmission shaft 41 is arranged through the supporting seat 3 and the end portion is coaxially provided with a connection and separation structure 6, the connection and separation structure 6 comprises a cylinder section 61 and a multiple prism section 62, the cylinder section 61 and the multiple prism section 62 are coaxially arranged in sequence at the end portion of the other end of the transmission shaft 41 in the direction away from the transmission shaft 41, the inscribed circle diameter of the multiple prism section 62 is greater than the outer diameter of the cylinder section 61, and the end portion of the multiple prism section 62 is provided with a limiting stop ring 63; the acting end of the operation handle 42 is provided with a mounting hole 43, the mounting hole 43 is matched with the multiple prism section 62, for connecting the operation handle 42 with the transmission shaft 41, so as to realize the opening and closing control of the operation handle 42 to the stop valve 2, and the operation handle 42 is sleeved on the cylinder section 61 through the mounting hole 43, for separating the operation handle 42 from the transmission shaft 41. The supporting seat 3 is provided with a first limiting stop 7, a second limiting stop 9 and a U-shaped clamping groove 14, the first limiting stop 7 is located above the position of the operation handle 42 when the stop valve 2 is in the closed state, the second limiting stop 9 is located below the position of the operation handle 42 when the stop valve 2 is in the maximum open state, for limiting the rotation angle of the operation handle 42. As shown in Figures 8-9As shown, the U-shaped slot 14 is used to accommodate the operating handle 42 in a disconnected state from the transmission shaft 41, and the U-shaped slot 14 is located on the inner side of the plane where the operating handle 42 is connected to the transmission shaft 41. A handle mounting box 8 is provided on the side wall of the support base 3 near the stop valve 2. The locking unit 5 includes a limit handle 52 and two limit supports 53. The limit handle 52 includes a limit vertical rod 10, two compression springs 11, and two limit cross rods 12. One end of the two limit cross rods 12 is connected to the side wall of the limit vertical rod 10 in parallel, and the other end is successively passed through the support base 3 and the handle mounting box 8 and slidably cooperates with the support base 3 and the handle mounting box 8. A limit convex ring 16 is provided on the side wall of each limit cross rod 12 and is located inside the handle mounting box 8. Two compression springs 11 are respectively mounted on the outside of the two limit cross rods 12. One end of each compression spring 11 abuts the side wall of the support base 3, and the other end abuts the corresponding limit convex ring 16. Each limiting crossbar 12 is further provided with an arcuate limiting boss 15 on its sidewall, located on the side of the support base 3 away from the stop valve 2. Two limiting supports 53 are provided on the support base 3. The limiting supports 53 and the limiting handle 52 are both located inside the plane where the operating handle 42 is located when the stop valve 2 is in the open state. One limiting support 53 is provided near the connecting and disconnecting structure 6, and the other limiting support 53 is located below the limiting handle 52. The limiting supports 53 and the limiting handle 52 are used to lock the operating handle 42 when the stop valve 2 is in the open state.

[0047] In other embodiments, the limiting handle 52 includes a limiting vertical rod 10 and two limiting diagonal rods 13, one end of the two limiting diagonal rods 13 are connected side by side to the side walls of the limiting vertical rod 10, and the other ends are successively passed through the support seat 3 and the handle mounting box 8 and slideably cooperate with the support seat 3 and the handle mounting box 8.

[0048] The specific usage process of this embodiment is as follows:

[0049] Step 1. Rotate one of the operating handles 42 mounted on the corresponding cylindrical segment 61 around the axis of the corresponding transmission shaft 41 and in the direction close to the first limit gear 7, so that the operating handle 42 disengages from the corresponding U-shaped slot 14, and then mount the operating handle 42 on the corresponding polygonal segment 62 through the mounting hole 43, so that the operating handle 42 is connected to the corresponding transmission shaft 41.

[0050] Step 2: Figure 1 、 Figure 3 and Figure 10 As shown, the operating handle 42 is rotated around the axis of the transmission shaft 41 and in the direction close to the second limit gear 9, so that the corresponding transmission shaft 41 drives the driving mechanism of the stop valve 2 and drives the rotation of the other transmission shaft 41 until the operating handle 42 abuts against the second limit gear 9, the stop valve 2 is in the maximum open state, and the medium in the tank is unloaded.

[0051] Step 3, as shown in Figure 2 and Figure 11 , pull out the limiting handle 52, rotate the operating handle 42 around the axis of the transmission shaft 41 and in the direction away from the second limiting stop 9 until the operating handle 42 is limited to the limiting cross rod 12, then release the limiting handle 52, under the rebounding action of the compression spring 11, the limiting vertical rod 10 presses the operating handle 42 tightly on the limiting support 53, so that the operating handle 42 is in the locked state.

[0052] Step 4, as shown in Figure 12 , after the medium in the tank is unloaded, pull out the limiting handle 52, rotate the operating handle 42 around the axis of the transmission shaft 41 and in the direction close to the second limiting stop 9, then release the limiting handle 52, the limiting handle 52 is automatically reset under the rebounding action of the compression spring 11, rotate the operating handle 42 around the axis of the transmission shaft 41 and in the direction away from the second limiting stop 9 again until it is limited to the first limiting stop 7, so that the stop valve 2 is in the closed state, finally push the operating handle 42 sleeved on the multi-prism section 62 in the direction close to the support seat 3 until the operating handle 42 is sleeved on the cylindrical section 61 connected to the disengagement structure 6 through the mounting hole 43, so that the operating handle 42 is disengaged from the transmission shaft 41, then rotate the operating handle 42 around the axis of the transmission shaft 41 and in the direction away from the first limiting stop 7 until it is placed in the corresponding U-shaped clamping groove 14, complete the tank car unloading operation. In the embodiment, the multi-prism section 62 is a square prism structure, and the mounting hole 43 is a square hole.

[0053] In other embodiments, step 3 is specifically to pull out the limiting handle 52, rotate the operating handle 42 around the axis of the transmission shaft 41 and in the direction away from the second limiting stop 9 until the operating handle 42 is limited to the limiting inclined rod 13, then release the limiting handle 52, under the action of gravity, the limiting vertical rod 10 presses the operating handle 42 tightly on the limiting support 53, so that the operating handle 42 is in the locked state.

[0054] Step 4 is specifically, after unloading the medium in the tank, pull the limit handle 52, rotate the handle 42 around the axis of the transmission shaft 41 and along the direction close to the second limit stop 9, then release the limit handle 52, the limit handle 52 is automatically reset under the action of gravity, rotate the handle 42 around the axis of the transmission shaft 41 and along the direction away from the second limit stop 9, until the limit is in the first limit stop 7, so that the stop valve 2 is in the closed state, finally push the handle 42 sleeved on the multi-prism section 62 along the direction close to the support seat 3, until the handle 42 is sleeved on the cylindrical section 61 connected to the disengagement structure 6 through the mounting hole 43, so that the handle 42 is disengaged from the transmission shaft 41, then rotate the handle 42 around the axis of the transmission shaft 41 and along the direction away from the first limit stop 7, until it is placed in the corresponding U-shaped clamping groove 14, at this time the handle 42 returns to the initial state, the tank car unloading operation is completed.

[0055] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A tank truck unloading device, characterized in that: It comprises two opening, closing and locking modules (1) arranged opposite to each other and a stop valve (2) with a self-restoring spring arranged between the two opening, closing and locking modules (1); the stop valve (2) is used to be connected to the bottom flange of the tank body of the tank truck to be unloaded; Each of the opening, closing and locking modules (1) comprises an opening and closing unit (4), a support base (3) and a locking unit (5); The opening and closing unit (4) comprises a transmission shaft (41) and an operating handle (42); one end of the transmission shaft (41) is connected to the driving mechanism of the stop valve (2), the other end of the transmission shaft (41) is passed through the support seat (3) and a connecting and disconnecting structure (6) is coaxially provided on the end; the operating handle (42) is sleeved on the connecting and disconnecting structure (6) and is used to connect or disconnect the operating handle (42) with the transmission shaft (41); The support seat (3) is provided with a first limit gear (7) and a second limit gear (9), the first limit gear (7) being located above the position of the operating handle (42) when the stop valve (2) is in a closed state, and the second limit gear (9) being located below the position of the operating handle (42) when the stop valve (2) is in a maximum open state, for limiting the rotation angle of the operating handle (42); The locking unit (5) includes a limit handle (52) and at least one limit support (53); the limit support (53) is arranged on the support seat (3), the limit handle (52) is passed through the support seat (3) and slidably cooperates with the support seat (3), the limit support (53) and the limit handle (52) are both located on the inner side of the plane where the operating handle (42) is located when the stop valve (2) is in the open state, and the limit support (53) and the limit handle (52) are used to realize locking of the operating handle (42) when the stop valve (2) is in the open state.

2. The unloading device for a tank truck according to claim 1, characterized in that: A handle mounting box (8) is provided on the side wall of the support seat (3) close to the stop valve (2); The limiting handle (52) comprises a limiting vertical rod (10), a compression spring (11) and at least one limiting horizontal rod (12); The side wall of the limiting vertical rod (10) is connected to one end of the limiting cross rod (12), and the other end of the limiting cross rod (12) is sequentially passed through the support seat (3) and the handle installation box (8) and is slidably matched with the support seat (3) and the handle installation box (8); a limiting convex ring (16) located in the handle installation box (8) is provided on the side wall of the limiting cross rod (12); The compression spring (11) is sleeved outside the limiting cross bar (12), one end of the compression spring (11) abuts against the side wall of the support seat (3), and the other end abuts against the limiting convex ring (16).

3. The unloading device for a tank truck according to claim 1, characterized in that: A handle mounting box (8) is provided on the side wall of the support seat (3) close to the stop valve (2); The limiting handle (52) includes a limiting vertical rod (10) and at least one limiting oblique rod (13); The side wall of the limiting vertical rod (10) is connected to one end of the limiting oblique rod (13), and the other end of the limiting oblique rod (13) is sequentially passed through the support seat (3) and the handle installation box (8) and is slidably matched with the support seat (3) and the handle installation box (8).

4. The unloading device for a tank truck according to claim 1, 2 or 3, characterized in that: The connecting and disengaging structure (6) comprises a cylindrical section (61) and a polygonal column section (62); The cylindrical section (61) and the polygonal column section (62) are coaxially arranged in sequence at the other end of the transmission shaft (41) in a direction away from the transmission shaft (41); the inscribed circle diameter of the polygonal column section (62) is larger than the outer diameter of the cylindrical section (61); and a limit stop ring (63) is provided at the end of the polygonal column section (62); The operating end of the operating handle (42) is provided with a mounting hole (43), which is adapted to the multi-prism section (62) and is used to connect the operating handle (42) to the transmission shaft (41), thereby enabling the operating handle (42) to control the opening and closing of the stop valve (2); the operating handle (42) is sleeved on the cylindrical section (61) through the mounting hole (43) and is used to disengage the operating handle (42) from the transmission shaft (41).

5. The unloading device for a tank truck according to claim 4, characterized in that: The support seat (3) is further provided with a U-shaped slot (14); the U-shaped slot (14) is used to accommodate an operating handle (42) that is in a state of being disconnected from the transmission shaft (41), and the U-shaped slot (14) is located on the inner side of the plane where the operating handle (42) that is in a state of being connected to the transmission shaft (41) is located.

6. The unloading device for a tank truck according to claim 2, characterized in that: There are two limit supports (53), one limit support (53) is arranged close to the connection and separation structure (6), and the other limit support (53) is located below the limit handle (52); An arc-shaped limiting boss (15) is also provided on the side wall of the limiting crossbar (12), and the arc-shaped limiting boss (15) is located on the side of the support seat (3) away from the stop valve (2).

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