Screw for connecting spray head

Abstract

The utility model relates to a screw for connecting a spray head, and relates to the technical field of screws, the screw comprises a screw rod part and a screw cap part, one side of the screw rod part is coaxially and fixedly connected with one side of the screw cap part, external threads are arranged on the peripheral surface of the screw rod part, and the cross section of the screw cap part is in a regular hexagon shape; a thread fixing groove is formed in the screw cap part along the axis of the screw cap part, and a liquid spraying through hole which is coaxial and communicated with the thread fixing groove is formed in the screw rod part; in the application, when the screw is applied, the thread part at one end of the external water pipe can be inserted into the thread fixing groove in a threaded mode, and the screw rod part on the screw can be screwed into the screw hole in the spray head in a threaded mode, so that the external water pipe and the spray head are connected through the screw; the production cost and the transportation cost of the single screw are low, even if the external water pipe and the spray head are not matched subsequently, the screw can be additionally purchased for connection, and then the corresponding cost for replacing the external water pipe and the spray head is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of screws, in particular to a screw for connecting a spray head. BACKGROUND

[0002] The spray head is a kind of liquid dispersion device with high efficiency and flexibility, and is widely used in various fields, especially in the fields where liquid needs to be uniformly and finely sprayed to a specific area, such as pesticide spraying in the agricultural field (including pesticides, disinfectant alcohol, etc.). The accurate operation of the spray head is particularly important. In these application scenarios, the spray head is often equipped at the end of the spray pipe of the medicine pot to atomize the liquid and ensure more uniform and comprehensive spraying, thereby improving the operation efficiency and effect.

[0003] In the prior art or related technology, the connection between the spray head and the external water pipe is usually achieved by thread cooperation to realize the delivery and spraying of liquid. When the water source is connected to the spray head through the external water pipe, the liquid can be sprayed out in the form of atomization from the spray port of the spray head to meet the operation requirements.

[0004] However, in actual application, the connection between the spray head and the external water pipe has some problems. Since different brands and different models of spray heads and spray pipes may have size differences, it is difficult for users to ensure complete adaptation between the two when purchasing. Once the size does not match, the user needs to spend time and money to replace or repurchase, which not only increases the economic cost, but also delays the progress of the spraying operation due to waiting for new parts, thereby increasing the time cost. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the application is to provide a screw for connecting a spray head, which solves the problem of increasing time and money cost due to the mismatched connection between the spray head and the external water pipe in the prior art or related technology.

[0006] The screw for connecting a spray head provided by the application adopts the following technical scheme:

[0007] A screw for connecting a spray head, comprising a screw rod part and a screw cap part, one side of the screw rod part and the screw cap part is fixedly connected coaxially, an outer thread is arranged on the outer circumferential surface of the screw rod part, and the cross-sectional shape of the screw cap part is a regular hexagon; a threaded fixing groove is arranged on the screw cap part along the axis thereof, and a liquid spraying through hole coaxial with the threaded fixing groove is arranged on the screw rod part.

[0008] By adopting the technical scheme, when the screw is applied, the threaded part on one end of the external water pipe can be screwed into the threaded fixing groove, and the screw rod part on the screw can be screwed into the threaded hole on the shower head, so that the external water pipe and the shower head are connected through the screw; the production cost and transportation cost of the single screw are low, and even if the external water pipe and the shower head are not matched, the screw can be additionally purchased to connect them, thereby reducing the corresponding cost of replacing the external water pipe and the shower head.

[0009] Optionally, a guide inclined surface is arranged on the side edge of the threaded fixing groove facing the bottom side of the liquid injection through hole.

[0010] By adopting the technical scheme, due to the arrangement of the guide inclined surface, the impact force on the bottom side of the threaded fixing groove when the external thread is injected into the threaded fixing groove is reduced, and the service life of the screw is prolonged.

[0011] Optionally, an annular boss is fixedly arranged on the outer periphery of the screw rod part close to the nut part.

[0012] By adopting the technical scheme, due to the arrangement of the annular boss, the structural strength of the connection between the screw rod part and the nut part is improved, and the service life of the screw is also improved.

[0013] Optionally, an elastic sealing ring is sleeved on the outer periphery of the screw rod part close to the nut part, and an annular clamping groove for clamping the annular boss is formed in the elastic sealing ring.

[0014] By adopting the technical scheme, due to the arrangement of the elastic sealing ring, when the screw rod part is connected with the shower head, the possibility of leakage at the connection part is reduced, and the sealing performance of the connection part is improved.

[0015] Optionally, a protective cover is detachably sleeved on the outer periphery of the screw rod part.

[0016] By adopting the technical scheme, due to the installation of the protective cover, during the transportation of the screw, the protective cover can be installed on the outer periphery of the screw rod part to protect the screw rod part, thereby reducing the possibility of impurities adhering to the threads of the screw rod part.

[0017] Optionally, the inner side surface of the protective cover is adapted to the outer peripheral surface of the nut part, an arc-shaped protrusion is fixedly arranged on the inner edge of one end of the protective cover, and a first positioning groove for clamping the arc-shaped protrusion is formed in the outer peripheral surface of the nut part close to the screw rod part.

[0018] By adopting the technical scheme, during the installation of the protective cover, due to the cooperation of the arc-shaped protrusion and the first positioning groove, the user can force the arc-shaped protrusion to be clamped into the first positioning groove, and in this state, the protective cover protects the outer peripheral surface of the screw rod part, and the protective cover can be removed during the application of the screw, so that the detachable installation of the protective cover is realized.

[0019] Optionally, a second positioning groove for the arc-shaped protrusion to be clamped into is formed on the outer circumferential surface of the nut part away from the screw rod part, and the two end surfaces of the protective cover are flush with the two sides of the nut part when the arc-shaped protrusion is clamped into the second positioning groove.

[0020] By adopting the above technical scheme, since the arc-shaped protrusion and the second positioning groove are arranged in cooperation, when the arc-shaped protrusion is clamped into the second positioning groove, the two end surfaces of the protective cover are flush with the two sides of the nut part at this time, so that the protective cover can be used to protect the outer circumferential surface of the nut part, and the use performance of the protective cover is improved.

[0021] Optionally, the outer circumferential surface of the protective cover is in the shape of a regular hexagon.

[0022] By adopting the above technical scheme, since the outer circumferential surface of the protective cover is arranged in the shape of a regular hexagon, when the screw is fastened by using a wrench or other tools, the size of the nut part can be increased by the protective cover, so that the screw can be fastened by using a wrench of one specification to be directly clamped on the nut part, or the screw can be fastened by using a wrench of other specifications to be clamped on the outer circumferential surface of the protective cover, that is, the screw can be fastened by using wrenches of different specifications or other tools, and the installation or disassembly of the screw is facilitated.

[0023] To sum up, the present application has at least one of the following beneficial technical effects:

[0024] 1. When the screw is applied, the threaded part on one end of the external water pipe can be threadedly inserted into the threaded fixing groove, and the screw rod part on the screw can be threadedly screwed into the screw hole on the spray head, so as to connect the external water pipe and the spray head by the screw; the production cost and transportation cost of a single screw are low, and even if the external water pipe and the spray head do not match, the external water pipe and the spray head can be connected by additionally purchasing the screw, so as to reduce the corresponding cost of replacing the external water pipe and the spray head.

[0025] 2. When transported, the arc-shaped protrusion can be clamped into the first positioning groove to protect the outer circumferential surface of the screw rod part, or the arc-shaped protrusion can be clamped into the second positioning groove to protect the outer circumferential surface of the nut part. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0027] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application;

[0028] Figure 2 is a sectional structure schematic diagram of embodiment 1 of the present application;

[0029] Figure 3 is a whole structure schematic diagram of embodiment 2 of the present application;

[0030] Figure 4 is an explosion structure schematic diagram of embodiment 2 of the present application embodying the installation distribution of the protective cover and the elastic sealing ring;

[0031] Figure 5 is a partial sectional structure schematic diagram of embodiment 2 of the present application embodying the installation distribution of the elastic sealing ring;

[0032] Figure 6 is a partial sectional structure schematic diagram of embodiment 2 of the present application embodying the installation distribution of the protective cover.

[0033] In the figure, 1, screw rod part; 11, annular boss; 12, liquid injection through hole; 2, screw cap part; 21, threaded fixing groove; 211, guide inclined surface; 22, first positioning groove; 23, second positioning groove; 3, elastic sealing ring; 31, annular clamping groove; 4, protective cover; 41, arc-shaped protruding block. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in combination with all the drawings.

[0035] Embodiment 1:

[0036] With reference to Figure 1 and Figure 2 , a screw for connecting a spray head comprises a screw rod part 1 and a screw cap part 2, which are coaxially and integrally formed on one side, wherein the outer circumferential surface of the screw rod part 1 is provided with external threads, the cross-sectional shape of the screw cap part 2 is a regular hexagon, and the screw rod part 1 is integrally formed with an annular boss 11 on the outer circumference close to the screw cap part 2.

[0037] The screw cap part 2 is provided with a threaded fixing groove 21 along the axis thereof, and the screw rod part 1 is provided with a liquid injection through hole 12 coaxial with and communicating with the threaded fixing groove 21, and the threaded fixing groove 21 is provided with a guide inclined surface 211 along the bottom side edge facing the liquid injection through hole 12.

[0038] The implementation principle of the embodiment of the present application is as follows:

[0039] In application, the threaded part on one end of the external water pipe can be threadedly inserted into the threaded fixing groove 21, and the screw rod part 1 on the screw can be threadedly screwed into the screw hole on the spray head, so as to connect the external water pipe and the spray head through the screw.

[0040] Embodiment 2:

[0041] With reference to Figure 3 , Figure 4 and Figure 5 The difference between the embodiment and the embodiment 2 is that the screw rod part 1 is sleeved with the elastic sealing ring 3 made of rubber material on the outer periphery close to the nut part 2, and the elastic sealing ring 3 is provided with the annular clamping groove 31 for clamping the annular boss 11.

[0042] Referring to Figure 4 , Figure 5 and Figure 6 , the outer periphery of the screw rod part 1 is detachably sleeved with the protective cover 4 made of plastic material, the inner side surface of the protective cover 4 is matched with the outer periphery surface of the nut part 2, one end of the inner edge of the protective cover 4 is fixedly provided with the arc-shaped lug 41, the outer side surface of the arc-shaped lug 41 is an arc surface, and the arc length corresponding to the arc surface is a minor arc, and the outer periphery surface of the nut part 2 close to the screw rod part 1 is provided with the first positioning groove 22 for clamping the arc-shaped lug 41; the outer periphery surface of the nut part 2 away from the screw rod part 1 is provided with the second positioning groove 23 for clamping the arc-shaped lug 41;

[0043] The user can force the arc-shaped lug 41 to be clamped into the first positioning groove 22, in this state, the protective cover 4 protects the outer periphery surface of the screw rod part 1, which can protect the screw rod part 1 during transportation and reduce the possibility of foreign matter adhering to the threads of the screw rod part 1; when the arc-shaped lug 41 is clamped into the second positioning groove 23, the two end surfaces of the protective cover 4 are flush with the two sides of the nut part 2, in this state, the protective cover 4 can be used to protect the outer periphery surface of the nut part 2.

[0044] Referring to Figure 3 and Figure 4 , the outer periphery surface of the protective cover 4 is a regular hexagon, so that when the protective cover 4 protects the outer surface of the nut part 2, a wrench can be directly clamped with the outer periphery of the protective cover 4 to drive the screw to rotate, which is convenient for installation or disassembly of the screw.

[0045] The implementation principle of the embodiment is:

[0046] During transportation, the arc-shaped lug 41 can be clamped into the first positioning groove 22 to protect the outer periphery surface of the screw rod part 1 by the protective cover 4, and the arc-shaped lug 41 can also be clamped into the second positioning groove 23 to protect the outer periphery surface of the nut part 2.

[0047] Unless otherwise defined, the terms used in the present application shall be understood as follows: the terms used in the present application should be understood as having the meanings commonly used by those skilled in the art to which the present application pertains, unless otherwise defined. The terms "first", "second", "third" and the like used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "one" or "a" and the like do not represent a quantity limitation, but represent the existence of at least one. The terms "including", "containing" and the like mean that the elements or objects before the terms "including" or "containing" cover the elements or objects listed after the terms "including" or "containing" and their equivalents, and do not exclude other elements or objects. The terms "upper", "lower", "left", "right" and the like only represent relative positional relationships, which may change accordingly when the absolute positions of the described objects change.

[0048] The embodiments of the present specific implementation are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are denoted by the same reference numerals. Therefore, any equivalent changes made in the structure, shape, principle of the present application should be covered by the protection scope of the present application.

Claims

1. A screw for connecting a nozzle, characterized in that: The invention comprises a screw portion (1) and a nut portion (2), wherein one side of the screw portion (1) and the nut portion (2) are coaxially fixedly connected, an external thread is provided on the outer peripheral surface of the screw portion (1), and the cross-sectional shape of the nut portion (2) is a regular hexagon; a thread fixing groove (21) is provided on the nut portion (2) along its own axis, and a liquid injection through hole (12) is provided on the screw portion (1) and is coaxial with and communicates with the thread fixing groove (21).

2. A screw for connecting a nozzle according to claim 1, characterized in that: A guiding slope (211) is provided on the bottom side edge of the thread fixing groove (21) facing the liquid spraying through hole (12).

3. The screw for connecting a nozzle according to claim 1, characterized in that: An annular boss (11) is fixedly provided on the outer periphery of the screw portion (1) close to the nut portion (2).

4. A screw for connecting a nozzle according to claim 3, characterized in that: An elastic sealing ring (3) is sleeved on the outer periphery of the screw portion (1) close to the nut portion (2), and an annular groove (31) for the annular boss (11) to be inserted is provided on the elastic sealing ring (3).

5. The screw for connecting a spray head according to claim 1, characterized in that: A protective cover (4) is detachably sleeved on the outer periphery of the screw portion (1).

6. The screw for connecting a nozzle according to claim 5, characterized in that: The inner side surface of the protective cover (4) is adapted to the outer peripheral surface of the nut portion (2); an arc-shaped protrusion (41) is fixedly provided on the inner edge of one end of the protective cover (4); and a first positioning groove (22) for the arc-shaped protrusion (41) to be inserted into is provided on the outer peripheral surface of the nut portion (2) near the screw portion (1).

7. A screw for connecting a spray head according to claim 6, characterized in that: A second positioning groove (23) for the arc-shaped protrusion (41) to be inserted into is provided on the outer peripheral surface of the nut portion (2) away from the screw portion (1); and the two end surfaces of the protective cover (4) are flush with the two sides of the nut portion (2) when the arc-shaped protrusion (41) is inserted into the second positioning groove (23).

8. The screw for connecting a spray head according to claim 7, characterized in that: The outer peripheral surface of the protective cover (4) is in the shape of a regular hexagon.

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