Needle bolt injector for filling and coating sealing grease

Abstract

The utility model provides a pintle injector for sealing grease coating, and relates to the field of sealing grease coating, the pintle injector for sealing grease coating comprises a first injection part and a second injection part, the second injection part comprises a top cover, a rotational flow part and an injection nozzle, the rotational flow part is fixed in an inner cavity of the top cover, and the rotational flow part and a second thread part are arranged at an interval in the axial direction. The rotational flow part comprises a first rotational flow part and a second rotational flow part, a clamping cavity is symmetrically defined by the first rotational flow part and the second rotational flow part, the first rotational flow part comprises a rotational flow body and a rotational flow plug, the rotational flow plug is solid, and a plurality of rotational flow channels which are sequentially arranged and bent in the space are formed in the peripheral face of the rotational flow plug. Due to the fact that the rotational flow plug is solid, the rotational flow plug is only provided with the bent rotational flow channel arranged in the circumferential direction of the side portion, the flowing space of sealing grease is small, excessive spraying of the sealing grease caused by too large thrust can be prevented, and flow control is achieved. And the sealing grease is mixed and homogenized through the rotational flow piece before being sprayed out from the spraying nozzle, so that the smearing uniformity can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing grease coating, in particular to a needle bolt injector for sealing grease coating. BACKGROUND

[0002] At present, when coating sealing grease in the product sealing groove, an operator generally uses fingers to dig a part of sealing grease from the sealing grease packaging box and directly coats it into the sealing groove. The width of the sealing groove of some products is relatively small, and the use of fingers for coating is uneven and inconvenient to control the amount of use. For the lubrication of relatively complex equipment or parts, a simple spraying device can be used for spraying.

[0003] In related technologies, during spraying using a device, too much force will cause excessive spraying of sealing grease in a local area, resulting in waste. If the force of the device for advancing spraying is too small, the sealing grease coating operation will progress slowly and inefficiently. Therefore, the flow control of the sealing grease coating operation for the product sealing groove needs to be improved. In addition, the sealing grease inside the spraying device is prone to the phenomenon of being thin at the top and thick at the bottom, which affects the sealing performance. Therefore, a new type of needle bolt injector is needed to control the flow and uniformity during the sealing grease coating process. CONTENT OF THE INVENTION

[0004] In view of the deficiencies of the prior art, the present application provides a needle bolt injector for sealing grease coating, which solves the problems of inconvenient flow control and uneven coating when coating sealing grease in the product sealing groove.

[0005] To achieve the above purpose, the following technical solutions are used:

[0006] The present application provides a needle bolt injector for sealing grease coating, which comprises a first injection member and a second injection member. The first injection member is in the form of a large-diameter column and has a first threaded portion on the outer periphery of the top. The first injection member has a slidable needle bolt inside. The second injection member comprises a top cover, a rotational flow member and a spraying nozzle. The inner periphery of the top cover has a second threaded portion that matches the first threaded portion. The spraying nozzle is located at the top of the top cover and adjacent to the side edge of the top cover. The rotational flow member is fixed in the inner cavity of the top cover and is spaced apart from the second threaded portion in the axial direction.

[0007] Specifically, the rotational flow member comprises a first rotational flow portion and a second rotational flow portion that are consistent in structure and fixedly connected. The first rotational flow portion and the second rotational flow portion symmetrically surround a clamping cavity. The inner wall of the clamping cavity comprises a part of an arc-shaped wall surface, and the convex direction of the arc-shaped wall surface is away from the geometric center of the clamping cavity. The first rotational flow portion comprises a rotational flow body and a rotational flow plug. The rotational flow plug is solid and has a plurality of rotational flow channels arranged in sequence and curved in space on the outer periphery for the sealing grease to pass through.

[0008] In some embodiments, the first swirl part further comprises a positioning plate, and the swirl plug is positioned in the through hole of the swirl body by the positioning plate.

[0009] In some embodiments, the swirl part further comprises two connecting pieces, and the second swirl part is connected to the inner wall of the top cover through the connecting pieces, and the projection of the injection nozzle on the second swirl part in the axial direction is located between the two connecting pieces.

[0010] In some embodiments, in the first state of the pin-in-needle injector for extracting the sealant, the second injection member is separated from the first injection member to extract the sealant through the end of the first injection member; in the second state of the pin-in-needle injector for injecting the sealant into the product seal groove, the second injection member is connected to the first injection member to inject the sealant through the injection nozzle.

[0011] In some embodiments, the injection nozzle is conical and the inner diameter thereof gradually decreases from the first end to the second end, and the inner diameter of the first end is at least three times that of the second end.

[0012] In some embodiments, the axial dimension of the first injection member is at least four times that of the top cover, and the inner diameter of the first injection member is at least eight times that of the second end of the injection nozzle.

[0013] In some embodiments, the first injection member is cylindrical and has a smooth inner peripheral surface, the pin member comprises a pushing part and an extension piece, and the extension piece can extend out of the cavity of the first injection member.

[0014] In some embodiments, the pushing part comprises a pushing body and two or more rubber rings sleeved on the outside of the pushing body, the pushing body is in a continuous columnar shape, the rubber rings are in interference fit with the pushing body and abut the inner peripheral surface of the first injection member.

[0015] In some embodiments, the extension piece is composed of a plurality of extension segments in a sheet shape, the plurality of extension segments are uniformly and spacedly distributed and fixedly connected to the bottom of the pushing part, and the end of the extension piece away from the pushing part is fixedly connected to a bottom plate.

[0016] In some embodiments, the second end of the injection nozzle is detachably provided with a dust cover, and the outer peripheral surface of the second injection member is fixedly provided with a skirt plate abutting the end of the second injection member towards the bottom plate.

[0017] The present application provides a pin-in-needle injector for sealant coating. Compared with the prior art, the following beneficial effects are achieved:

[0018] The pin injector of the present application comprises a first injection part and a second injection part, which are detachably connected through a first threaded part and a second threaded part; in the process of pushing the pin part to spray the sealant, the sealant needs to pass through the cyclone part, and under the action of pressure, the sealant enters the clamping cavity for mixing through the curved cyclone channel of the first cyclone part in different directions, and is sprayed out again through the cyclone channel of the second cyclone part in different directions and is collected to be sprayed out from the injection nozzle; on the one hand, since the cyclone plug is solid, the cyclone plug only has the curved cyclone channel arranged circumferentially along the side part, the flow space of the sealant is small, and the flow control can be realized to prevent the sealant from being sprayed excessively due to excessive pushing force; on the other hand, the sealant is mixed and homogenized by the cyclone part before being sprayed out from the injection nozzle, and the uniformity of the coating can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. 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 creative labor on the basis of these drawings.

[0020] Figure 1 is a perspective view of a sealant coating pin injector provided by the embodiment of the present application;

[0021] Figure 2 is a side view of a sealant coating pin injector provided by the embodiment of the present application;

[0022] Figure 3 is a top view of the second injection part provided by the embodiment of the present application;

[0023] Figure 4 is a structure schematic view of the cyclone part provided by the embodiment of the present application;

[0024] Figure 5 is a top view of a sealant coating pin injector provided by the embodiment of the present application;

[0025] Figure 6 is a connection schematic view of the first injection part and the apron provided by the embodiment of the present application;

[0026] Figure 7 is a structure schematic view of the pin part and the bottom plate provided by the embodiment of the present application.

[0027] BRIEF DESCRIPTION OF DRAWINGS: first injection part 1; pin plug 2; advancing part 21; advancing main body 211; rubber ring 212; extending branch 22; second injection part 3; top cover 4; swirl part 5; first swirl part 51; swirl body 511; swirl plug 512; positioning plate 513; second swirl part 52; connecting part 53; injection nozzle 6; bottom plate 7; apron 8; clamping cavity A; swirl channel B. DETAILED DESCRIPTION

[0028] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Also, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or other elements inherent to such a process, method, article, or apparatus. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus including the element.

[0030] The embodiments of the present application provide a needle plug injection device for sealing grease coating, which solves the problems of inconvenient flow control and uneven coating when coating sealing grease in a product sealing groove.

[0031] The technical solutions in the embodiments of the present application are as follows to solve the above technical problems:

[0032] At present, when coating sealing grease in a product sealing groove, an operator generally uses fingers to dig a part of sealing grease from a sealing grease packaging box and directly coats it in the sealing groove. The sealing groove of some products is relatively small in width, and the use of fingers for coating is not uniform and is inconvenient for controlling the amount of use. For lubrication of relatively complex equipment or parts, a simple spraying device can be used for spraying.

[0033] In the related art, in the process of spraying using the device, too much force will cause the local spraying amount of the sealing grease to be too large, resulting in waste, and if the force of the device pushing the spraying is too small, the sealing grease coating operation will be slow and inefficient. Therefore, the sealing grease spraying operation of the product sealing groove needs to be controlled. In addition, the sealing grease inside the spraying device is prone to the phenomenon of upper dilution and lower thickening, which causes the sprayed sealing grease to be uneven, affecting the sealing performance. Therefore, a new type of needle injection injector is needed to balance the flow control and uniformity control during the sealing grease coating process.

[0034] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings in the specification and specific embodiments.

[0035] First, a sealing grease coating needle injection injector provided by the embodiments of the present application will be introduced.

[0036] A sealing grease coating needle injection injector provided by the embodiments of the present application, please refer to Figures 1-7 The sealing grease coating needle injection injector includes a first injection member 1 and a second injection member 3. The first injection member 1 is in a large-diameter columnar shape and has a first threaded portion on the outer periphery of the top. The first injection member 1 has a slidable needle member 2 inside. The second injection member 3 includes a top cover 4, a rotational flow member 5, and a injection nozzle 6. The inner periphery of the top cover 4 has a second threaded portion that is engaged and matched with the first threaded portion. The injection nozzle 6 is located at the top of the top cover 4 and adjacent to the side edge of the top cover 4. The rotational flow member 5 is fixed in the inner cavity of the top cover 4 and is arranged in the axial direction and spaced apart from the second threaded portion.

[0037] Specifically, the rotational flow member 5 includes a first rotational flow portion 51 and a second rotational flow portion 52 that are consistent in structure and fixedly connected. The first rotational flow portion 51 and the second rotational flow portion 52 symmetrically surround a clamping cavity A. The inner wall of the clamping cavity A includes a partial arc-shaped wall surface. The convex direction of the arc-shaped wall surface is away from the geometric center of the clamping cavity A. The first rotational flow portion 51 includes a rotational flow body 511 and a rotational flow plug 512. The rotational flow plug 512 is solid and has a plurality of rotational flow channels B arranged in sequence and curved in space on the outer periphery for the sealing grease to pass through.

[0038] In the embodiments of the present application, the needle injection injector of the present application includes a first injection member 1 and a second injection member 3. The first injection member 1 and the second injection member 3 are detachably connected through the first threaded portion and the second threaded portion. In the process of spraying the sealing grease by pushing the needle member 2, the sealing grease needs to pass through the rotational flow member 5. The sealing grease enters the clamping cavity A in different rotational directions under the action of pressure via the curved rotational flow channels B in the first rotational flow portion 51, is mixed, and is sprayed out again via the rotational flow channels B of the second rotational flow portion 52 in different rotational directions and is collected to be sprayed out from the injection nozzle 6.

[0039] It can be understood that, on the one hand, since the swirler plug 512 is solid, the swirler plug 512 only has the curved swirler passage B arranged circumferentially along the side portion, the flow space of the sealing grease is small, and the excessive injection of the sealing grease due to the excessive thrust applied by the needle member 2 can be prevented, and the application facilitates the flow control by arranging the swirler member 5; on the other hand, the sealing grease is mixed and homogenized by the swirler member 5 before being injected from the injection nozzle, and the uniformity of the sealing grease applied in the product sealing groove can be improved.

[0040] In some embodiments, as shown in Figure 4 The swirler plug 512 is limited in the through hole of the swirler body 511 through the positioning plate 513.

[0041] In the embodiment of the application, it should be noted that the positioning plate 513 is in a strip shape, the positioning plate 513 can correspond to the middle region of the swirler plug 512, the positioning plate 513 is used for positioning and fixing the swirler plug 512, and the positioning plate 513 does not affect the entry of the sealing grease into the swirler passage B.

[0042] In some embodiments, please refer to Figure 4 The swirler member 5 further comprises two connecting members 53, the second swirler portion 52 is connected to the inner wall of the top cover 4 through the connecting members 53, and the projection of the injection nozzle 6 on the second swirler portion 52 is located between the two connecting members 53.

[0043] In the embodiment of the application, it can be understood that the first swirler portion 51 and the second swirler portion 52 are fixedly connected, the second swirler portion 52 is fixedly connected with the connecting members 53, and there is still a space between the second swirler portion 52 and the inner wall of the top cover 4 for the sealing grease injected from the swirler passage B to be mixed and collected again, and the space is communicated with the injection nozzle 6.

[0044] It should be noted that the swirler member 5 is located in the inner cavity of the top cover 4, and the swirler member 5 is arranged in space along the axial direction and the second threaded portion on the inner side of the top cover 4, and the bottom of the second threaded portion is arranged flush with the lower port of the top cover 4; the swirler member 5 and the second threaded portion do not interfere with each other in space, and the swirler member 5 does not affect the meshing connection of the first threaded portion and the second threaded portion.

[0045] In one example, the top cover 4 and the second swirler portion 52 can be made of ferrous material, and the connecting member 53 can be made of magnetic material, and the connecting member 53 is connected to the top cover 4 and the second swirler portion 52 through the adsorption effect therebetween.

[0046] In some embodiments, the pin ejector is in a first state for extracting the sealant, the second injection member 3 is separated from the first injection member 1 to extract the sealant through the end of the first injection member 1; in a second state for injecting the sealant into the product sealing groove, the second injection member 3 is connected to the first injection member 1 to inject the sealant through the injection nozzle 6.

[0047] In the embodiments of the present application, it can be understood that when the sealant is extracted into the first injection member 1, the second injection member 3 can be removed, and the large caliber of the first injection member 1 is fully utilized to directly extract the sealant quickly, and after the extraction is completed, the second injection member 3 is assembled to the end of the first injection member 1 for the spraying of the sealant.

[0048] In some embodiments, referring to Figure 1 and Figure 2 , the injection nozzle 6 is tapered and the inner diameter gradually decreases from the first end to the second end of the injection nozzle 6, the inner diameter of the first end of the injection nozzle 6 is at least three times the inner diameter of the second end of the injection nozzle 6. The axial dimension of the first injection member 1 is at least four times the axial dimension of the top cover 4; the inner diameter of the first injection member 1 is at least eight times the inner diameter of the second end of the injection nozzle 6.

[0049] In the embodiments of the present application, it can be understood that in order to smoothly enter the narrow product sealing groove, the size of the second end of the injection nozzle 6 needs to be controlled, and in order to smoothly enter the sealant into the injection nozzle 6, the first end of the injection nozzle 6 connected to the top cover 4 needs to be configured with a slightly larger inner diameter. Exemplarily, the inner diameter of the first end of the injection nozzle 6 is greater than or equal to three times the inner diameter of the second end of the injection nozzle 6.

[0050] In addition, in order to avoid the need to frequently disassemble and assemble the first injection member 1 and the second injection member 3, and to avoid the need to frequently inject the sealant into the first injection member 1, the first injection member 1 needs to be reasonably sized, and if the size of the first injection member 1 is too large, it will be inconvenient to operate, and if the size of the first injection member 1 is too small, it will result in the need to frequently inject the sealant. Exemplarily, the axial dimension of the first injection member 1 is greater than or equal to four times the axial dimension of the top cover 4, that is, the length of the first injection member 1 is greater than or equal to four times the length of the top cover 4.

[0051] In some embodiments, referring to Figure 7 , the first injection member 1 is cylindrical and has a smooth inner peripheral surface, the pin member 2 includes a pushing portion 21 and an extension member, the extension member can extend out of the cavity of the first injection member 1; the end of the extension member away from the pushing portion 21 is fixedly connected with the bottom plate 7.

[0052] In one example, the propelling part 21 comprises a propelling body 211 and two or more rubber rings 212 sleeved outside the propelling body 211, the propelling body 211 is in a continuous columnar shape, and the rubber rings 212 are in interference fit with the propelling body 211 and abut the inner circumferential surface of the first injection member 1.

[0053] In another example, the extension member is composed of a plurality of extension segments 22 in a sheet shape, the plurality of extension segments 22 are uniformly spaced and fixedly connected to the bottom of the propelling part 21.

[0054] In some embodiments, a dustproof cover is detachably mounted at the second end of the injection nozzle 6, please refer to Figure 1 and Figure 2 The outer circumferential surface of the second injection member 3 is fixedly mounted with a skirt plate 8, and the skirt plate 8 is adjacent to the end of the second injection member 3 towards the bottom plate 7.

[0055] In the embodiments of the present application, it can be understood that the second end of the injection nozzle 6 is adapted with a dustproof cover, which can ensure that the sealing grease is not contaminated during temporary storage. By providing the skirt plate 8, the convenience of the needle pin injector during handheld operation can be improved.

[0056] In summary, compared with the prior art, the present application has the following beneficial effects:

[0057] 1. In the process of spraying the sealing grease by the propelling needle pin member 2, the sealing grease needs to pass through the cyclone member 5, and under the action of pressure, the sealing grease enters the mixing chamber A with different rotation directions through the curved cyclone passage B in the first cyclone part 51 for mixing, and is sprayed out again through the cyclone passage B of the second cyclone part 52 with different rotation directions and is collected to be sprayed out from the injection nozzle 6. The sealing grease is fully mixed by the cyclone member 5 before being sprayed out from the injection nozzle, which can improve the uniformity of the sealing grease applied in the product sealing groove.

[0058] 2. Since the cyclone plug 512 is solid, the cyclone plug 512 only has the curved cyclone passage B arranged circumferentially along the side, the flow space of the sealing grease is small, and the excessive spraying of the sealing grease caused by the excessive propelling force of the needle pin member 2 can be prevented. By providing the cyclone member 5, the flow control can also be achieved.

[0059] 3. The first injection member 1 and the second injection member 3 of the present application are detachably connected through the first threaded part and the second threaded part. When the sealing grease is filled into the first injection member 1, the second injection member 3 can be removed, and the large caliber of the first injection member 1 is fully utilized to directly extract the sealing grease quickly.

[0060] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A needle-type injector for applying sealant grease, characterized in that, include: The first injection component (1) is in the shape of a large-diameter column with a first threaded portion on the outer circumferential surface of its top. The first injection component (1) has a slidable needle plug (2) inside. The second injection component (3) includes a top cover (4), a swirl member (5), and a nozzle (6). The inner circumferential surface of the top cover (4) has a second thread that meshes with the first thread. The nozzle (6) is located at the top of the top cover (4) and adjacent to the side edge of the top cover (4). The swirl member (5) is fixed to the inner cavity of the top cover (4) and is spaced apart from the second thread along the axial direction. The swirling element (5) includes a first swirling section (51) and a second swirling section (52) that are structurally identical and fixedly connected. The first swirling section (51) and the second swirling section (52) symmetrically surround a cavity (A). The inner wall of the cavity (A) includes a partially arc-shaped wall surface, and the convex direction of the arc-shaped wall surface is away from the geometric center of the cavity (A). The first swirling section (51) includes a swirling body (511) and a swirling plug (512). The swirling plug (512) is solid and has multiple swirling channels (B) arranged sequentially and curved in space on its outer circumference for the passage of sealing grease.

2. The needle-type injector for applying sealant grease as described in claim 1, characterized in that, The first swirl section (51) further includes a positioning plate (513), and the swirl plug (512) is positioned in the through hole of the swirl body (511) by the positioning plate (513).

3. The needle-type injector for applying sealant grease as described in claim 2, characterized in that, The swirl element (5) further includes two connectors (53), the second swirl section (52) is connected to the inner wall of the top cover (4) through the connectors (53), and the projection of the nozzle (6) along the axial direction on the second swirl section (52) is located between the two connectors (53).

4. The needle-type injector for applying sealant grease as described in any one of claims 1-3, characterized in that, In the first state of the needle-plug injector extracting sealant, the second injection element (3) is separated from the first injection element (1) to extract sealant via the end of the first injection element (1); in the second state of the needle-plug injector injecting sealant into the product sealing groove, the second injection element (3) is connected to the first injection element (1) to inject sealant via the nozzle (6).

5. The needle-type injector for applying sealant grease as described in any one of claims 1-3, characterized in that, The nozzle (6) is conical and its inner diameter gradually decreases from its first end to its second end. The inner diameter of the first end of the nozzle (6) is at least three times the inner diameter of the second end of the nozzle (6).

6. The needle-type injector for applying sealant grease as described in claim 5, characterized in that, The axial dimension of the first injection element (1) is at least four times the axial dimension of the top cover (4); the inner diameter of the first injection element (1) is at least eight times the inner diameter of the second end of the nozzle (6).

7. The needle-type injector for applying sealant grease as described in any one of claims 1-3, characterized in that, The first injection piece (1) is cylindrical and has a smooth inner circumferential surface. The needle plug (2) includes a propulsion part (21) and an extension part, which can extend out of the cavity of the first injection piece (1).

8. The needle-type injector for applying sealant as described in claim 7, characterized in that, The propulsion part (21) includes a propulsion body (211) and two or more rubber rings (212) sleeved on the outside of the propulsion body (211). The propulsion body (211) is in a continuous columnar shape. The rubber rings (212) are interference-fitted with the propulsion body (211) and abut against and fit against the inner circumferential surface of the first injection part (1).

9. The needle-type injector for applying sealant as described in claim 7, characterized in that, The extension is composed of multiple sheet-like extension segments (22), which are evenly spaced and fixedly connected to the bottom of the propulsion part (21); a base plate (7) is fixedly connected to one end of the extension away from the propulsion part (21).

10. The needle-type injector for applying sealant as described in claim 9, characterized in that, The second end of the nozzle (6) is detachably fitted with a dust cover, and a skirt plate (8) is fixedly installed on the outer peripheral surface of the second injection part (3). The skirt plate (8) is adjacent to the end of the second injection part (3) facing the base plate (7).

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