Device with coupling connection structure

Abstract

The invention relates to a device (1) having a coupling structure (9) which comprises two coupling elements (10, 11). The coupling elements (10, 11) can be connected by means of a threaded connection and form a fluid channel. The first coupling part (10) has a multi-start thread (13) as a connection structure as part of the threaded connection. The second coupling part (11) is provided with a multi-head matching thread (19) which serves as another part of the threaded connection and serves as a connecting structure.

Description

Technical Field

[0001] The invention relates to a device with a coupling connection structure. Background Art

[0002] Such a device is generally used for conveying fluid via a fluid channel. The device comprises a coupling connection structure having two coupling members. The coupling connection structure is connected by a threaded connection to form a fluid channel.

[0003] A typical application example is a tanker truck for transporting fluids in tanks. The tanker truck delivers fluids, in particular, to containers that are stationary in buildings. The fluids can be in the form of specialty chemicals required for carrying out industrial processes, such as the semiconductor industry. One or more containers are then integrated into the corresponding industrial building.

[0004] The tank truck has a tank connected to a coupling via a pipeline. The container in the building is connected to another coupling directly or via another pipeline.

[0005] In order to transport the fluid, the tanker travels to the building, whereby the coupling member in the building can be connected to the coupling member by a threaded connection to form a coupling connection structure. This forms a continuous fluid passage from the tank to the container, whereby the fluid can be transported from the tank to the container.

[0006] To form a threaded connection, one coupling part has a thread and the other coupling part has a mating thread.

[0007] Forming a threaded connection is relatively cumbersome and time consuming because the mating thread must be screwed against the thread several turns, typically three to four turns, to form a stable threaded connection.

[0008] Another disadvantage is that the thread and the mating thread tend to get stuck. This not only makes it more difficult to form the threaded connection, but also the risk of damage to the thread and the mating thread is considerable. This is particularly a risk if the thread and the mating thread are made of plastic. Summary of the invention

[0009] The object of the invention is to provide a connection structure for a device of the above-mentioned type which has a high degree of functionality and functional reliability.

[0010] This object is achieved with the features of claim 1. Advantageous embodiments and suitable further developments of the invention are specified in the dependent claims.

[0011] The present invention relates to a device with a coupling connection structure, wherein the coupling connection structure comprises two coupling members. The coupling members can be connected by threaded connection to form a fluid channel. The first coupling member has a multi-start thread as a part of the threaded connection and a connecting structure. The second coupling member has a multi-start mating thread as another part of the threaded connection and a connecting structure.

[0012] In the device according to the invention, the fluid is usually conveyed via a fluid channel.

[0013] The two coupling parts are connected by threaded connection to establish a coupling connection structure and form a fluid channel for conveying fluid.

[0014] According to the present invention, one coupling member has a multi-start thread as a connection structure. The other coupling member has a corresponding multi-start mating thread. Through the coupling member formed in this way, a threaded connection can be quickly and reliably formed, that is, a coupled connection structure with a coupling member can be quickly and easily formed to provide a fluid channel.

[0015] A significant advantage of the multi-start thread according to the invention is that the multi-start thread only needs to be screwed a few turns, preferably only one-third of a turn, relative to the multi-start mating thread to form a firm and stable threaded connection.

[0016] Another significant advantage of the multiple-start thread according to the invention is that the risk of jamming when the multiple-start thread is screwed onto the multiple-start mating thread is significantly reduced compared to conventional single-start threads. Such jamming not only delays the formation of the threaded connection, because after jamming the multiple-start thread must be repositioned on the multiple-start mating thread. Rather, such jamming carries the risk of damaging the multiple-start thread and / or the multiple-start mating thread, so that the threaded connection can no longer be formed. This risk exists in particular if the connection structure with the multiple-start thread and the multiple-start mating thread is made of plastic.

[0017] According to an advantageous embodiment, the multiple-start thread is an external thread and the multiple-start mating thread is an internal thread.

[0018] The threaded connection formed in this way is particularly fluid-tight, so that no leakage can occur at the threaded connection.

[0019] According to a structurally advantageous embodiment, an external thread is arranged on the outer side of the hollow cylindrical shaft of the first coupling element.

[0020] Correspondingly, an internal thread is arranged in the coupling nut of the second coupling member.

[0021] The threaded connection formed in this way has a simple, robust design and can be easily closed and disconnected again.

[0022] The threaded connection is made or broken by manually operating the coupling nut.

[0023] Manual operation can be performed quickly and easily, since the multi-start thread only needs to be screwed a few turns, preferably only a third of a turn, relative to the multi-start mating thread to produce the threaded connection.

[0024] Once the threaded connection is formed and the coupled connection structure is established, fluid may flow through the coupled connection structure as part of the fluid passageway.

[0025] Advantageously, a valve is provided in each coupling element, wherein the valve is opened when the coupling connection is formed.

[0026] The opening and closing of the valve is advantageously actively guided, in particular via a mechanical actuation mechanism.

[0027] If the couplings are separated from each other, the locking mechanism in the couplings ensures that the valve is closed, so that no fluid can leak from the couplings. Once the couplings are connected, the valve will be opened by means of an actuating mechanism, so that fluid can flow through the fluid passage in the coupled connection structure.

[0028] According to an advantageous embodiment, the connecting structure of the coupling element is made of plastic, wherein advantageously the entire coupling element is made of a plastic component.

[0029] The above-mentioned components can be produced efficiently and economically as plastic injection mouldings. They are also more acid-resistant than metal parts which can also be used.

[0030] Since the connection structure is made of plastic, the multiple-start thread is also made of plastic. However, this is not important, because designing the thread as a multiple-start thread can prevent jamming when forming a threaded connection, and thus, there is no need to worry that the multiple-start thread will be damaged.

[0031] By establishing a threaded connection between the couplings, a coupling connection structure is established, thereby providing a fluid channel for fluid transport. Usually, the fluid can be transported from one container to another container via the fluid channel.

[0032] According to an advantageous embodiment, by forming a coupling connection structure, a fluid channel is formed between the tank of the tank truck and a fixed container, preferably a fixed container arranged in a building, so that the fluid is transported from the tank to the container. Generally, of course, the fluid can also be transported in the opposite direction.

[0033] Usually, the coupling piece provided on the tank truck is connected to the tank via a pipeline (such as a hose). Another coupling piece of the coupling connection structure is directly provided on the container or connected to the container via a pipeline (such as a hose or a pipe). BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention is described below with reference to the accompanying drawings. The accompanying drawings show:

[0035] Figure 1 A schematic diagram showing an example of an embodiment of a device having a coupling connection structure according to the present invention.

[0036] Figure 2 Shown according to Figure 1 A perspective view of a coupling member of a coupling connection structure.

[0037] Figure 3 Shown according to Figure 2 Side view of the coupling. DETAILED DESCRIPTION

[0038] Figure 1 A highly schematic arrangement of a device 1 according to the invention is shown.

[0039] The device 1 comprises a tanker 2 having a tank 3 in which a fluid is stored. The fluid may be a fluid specialty chemical required to carry out an industrial process.

[0040] The fluid conveyed in the tank 3 of the tank truck 2 is fed into a fixedly arranged container 4. In this case, the container 4 is arranged in an industrial building 5.

[0041] In this case, the container 4 is connected to the connection unit 7 via a line 6, which can be formed by a pipe or a hose. In principle, the container 4 can be connected to the connection unit 7 directly.

[0042] A line 8 leads from the tank 3 of the tank truck 2 to the connecting unit 7 , wherein the line 8 is advantageously formed by a hose.

[0043] In order to form a continuous fluid passage from the tank 3 to the container 4 via the pipelines 6 and 8, a coupling connection structure 9 is provided according to the present invention. The coupling connection structure 9 comprises two coupling pieces 10 and 11, wherein the first coupling piece 10 is arranged in the connection unit 7 and the second coupling piece 11 is arranged at the free end of the pipeline 6 coupled to the tank 3.

[0044] Figure 2 and Figure 3 A coupling connection 9 with two coupling elements 10 , 11 is shown in each case.

[0045] The coupling parts 10, 11 are made of plastic, wherein the coupling parts 10, 11 are formed from one or more plastic injection-molded parts. The coupling parts 10, 11 form a tubular hollow body in which a fluid can be conveyed.

[0046] By means of a threaded connection, the coupling members 10, 11 can be connected to form a coupled connection structure 9. The threaded connection is manually operated to connect or disconnect the coupling members 10, 11.

[0047] A valve (not shown) is provided in each coupling member 10, 11.

[0048] The opening and closing of the valve is advantageously actively guided, in particular via a mechanical actuation mechanism.

[0049] If the couplings 10, 11 are separated from each other, the locking mechanism in the couplings 10, 11 ensures that the valve is closed so that the fluid does not leak from the couplings 10, 11. Once the couplings 10, 11 are connected to each other, the valve is opened by means of the actuating mechanism so that the fluid can flow through the fluid channel in the coupling connection structure 9.

[0050] A control element may be provided to operate the actuation mechanism. Alternatively, the actuation mechanism is automatically operated when the coupling connection structure 9 is established or disconnected.

[0051] In order to establish the screw connection, the coupling elements 10 , 11 have connecting structures, each of which is made of plastic.

[0052] like Figure 2 and Figure 3 As shown, the first coupling member 10 is basically composed of a hollow cylinder. On the front side facing the second coupling member 11, the first coupling member 10 has a hollow cylindrical shaft 12. A multi-start thread 13 in the form of an external thread is arranged on the outer jacket surface of the hollow cylindrical shaft 12 as a first connecting structure. The thickened section 14 of the tubular body adjoins the multi-start thread. On the rear side facing away from the second coupling member 11, the coupling member 10 has a connecting profile 15 for connecting to the pipeline 6 or the container 4.

[0053] The second coupling member 11 is also substantially formed by a hollow cylinder. A flange 16 for connecting the pipeline 8 leading to the tank 3 is located on the rear side of the second coupling member 11 facing away from the first coupling member 10 .

[0054] The coupling nut 18 is mounted on the hollow cylindrical pipe section 17 .

[0055] A multi-start mating thread 19 in the form of an internal thread is located on the inner wall of the coupling nut 18 as a second connection structure.

[0056] Both the multiple-start thread 13 and the multiple-start mating thread 19 have a plurality of starting cuts.

[0057] By screwing a coupling nut 18 having a multi-start mating thread 19 onto the multi-start thread 13, a coupling connection structure 9 is formed by establishing a threaded connection using the multi-start thread 13 and the corresponding multi-start mating thread 19. The coupling connection structure 9 forms a fluid-tight connection, so that a fluid can flow through the coupling connection structure 9 as part of a fluid passage without the risk of leakage.

[0058] Since both the external thread and the internal thread of the connection structure are designed as multi-start threads, a few turns of the external thread on the internal thread, preferably only one-third of a turn, is sufficient to firmly and stably form a threaded connection. By designing the connection structure as a multi-start thread, the external thread can be prevented from getting stuck on the internal thread.

[0059] Once the couplings 10 , 11 are connected to form the coupled connection structure 9 by forming a threaded connection between the multi-start threads 13 and the multi-start mating threads 19 , the fluid can be supplied from the tank 3 to the container 4 via the fluid passage.

[0060] After the filling process is completed, the coupling parts 10 , 11 are separated again by disconnecting the threaded connection.

[0061] Reference numerals list

[0062] 1 device

[0063] 2 tank trucks

[0064] 3 cans

[0065] 4 Containers

[0066] 5Industrial Buildings

[0067] 6 pipeline

[0068] 7 Connection Unit

[0069] 8 pipelines

[0070] 9 Coupling connection structure

[0071] 10 coupling

[0072] 11 coupling

[0073] 12Hollow cylindrical shaft

[0074] 13 Multi-thread

[0075] 14 paragraphs

[0076] 15 Connecting contours

[0077] 16 Flange

[0078] 17 pipe section

[0079] 18 coupling nut

[0080] 19 Multi-thread

Claims

1. A device (1) having a coupling connection structure (9), the coupling connection structure comprising two coupling members (10, 11), the coupling members being capable of being connected by threaded connection to form a fluid channel, characterized in that: The first coupling member (10) has a multi-start thread (13) as a connection structure as a part of the threaded connection, and the second coupling member (11) has a multi-start mating thread (19) as a connection structure as another part of the threaded connection.

2. The device (1) according to claim 1, characterized in that The multiple-start threads are external threads, and the multiple-start matching threads are internal threads.

3. The device (1) according to claim 2, characterized in that The external thread is arranged on the outer side of the hollow cylindrical shaft (12) of the first coupling member (10).

4. The device (1) according to claim 2 or 3, characterized in that The internal thread is arranged in a coupling nut (18) of the second coupling member (11).

5. The device (1) according to claim 4, characterized in that The threaded connection is established or disconnected by manually operating the coupling nut (18).

6. The device (1) according to any one of claims 1 to 5, characterized in that The connecting structure is made of plastic.

7. The device (1) according to any one of claims 1 to 6, characterized in that The coupling parts (10, 11) are made of plastic parts.

8. The device (1) according to any one of claims 1 to 7, characterized in that The first coupling member (10) is connected to the container (4) directly or via a pipeline (6).

9. The device (1) according to any one of claims 1 to 8, characterized in that The second coupling (11) is connected to the tank (3) of the tank truck (2) via a pipeline (8).

10. The device (1) according to claim 8 or 9, characterized in that The or each line (6, 8) is formed as a hose.

11. The device (1) according to any one of claims 1 to 10, characterized in that Each coupling member (10, 11) has a valve therein, wherein the valve is opened when the coupling connection structure (9) is formed.

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