阅读说明：本技术 一种逆止阀 (Check valve ) 是由 狄慕中 于 2020-07-10 设计创作，主要内容包括：本发明公开了一种逆止阀,包括阀套、阀芯、阀柄,所述阀套由弹性材料制成,所述阀套为一不规则圆锥形,所述阀柄为一阶梯型圆柱体,所述阀柄上部连接一喷嘴,所述阀柄下部插入到阀套顶部,所述阀芯近似一图钉状,包括位于底部的阀芯座和位于底部中心线上的出水管,所述出水管内部中空,且该出水管侧壁上设有若干通水孔,所述出水管从阀套的底部插入,插在阀柄内部,所述阀芯座紧贴在所述阀套内侧壁上,所述阀套底部连接一喷泵储液口。本申请的止回阀,避免了采用金属,整体采用软硬塑料件,在产品用完后,可以直接回收利用,零部件再生料的回收简单方便,回收成本低,资源再利用效率高,且不会对大自然造成任何污染,还保障了人类健康。(The invention discloses a check valve which comprises a valve sleeve, a valve core and a valve handle, wherein the valve sleeve is made of elastic materials, the valve sleeve is in an irregular conical shape, the valve handle is a stepped cylinder, the upper part of the valve handle is connected with a nozzle, the lower part of the valve handle is inserted into the top of the valve sleeve, the valve core is similar to a picture pin shape and comprises a valve core seat positioned at the bottom and a water outlet pipe positioned on the central line of the bottom, the inside of the water outlet pipe is hollow, the side wall of the water outlet pipe is provided with a plurality of water through holes, the water outlet pipe is inserted into the valve handle from the bottom of the valve sleeve, the valve core seat is tightly attached to the inner side wall of the valve sleeve, and the bottom. The utility model provides a check valve has avoided adopting the metal, wholly adopts soft or hard working of plastics, and after the product is used up, can direct recycle, the recovery of spare part reworked material is simple and convenient, and the recovery cost is low, and the resource is recycled efficiently, and can not cause any pollution to the nature, has still ensured human health.)

1. The utility model provides a check valve, its characterized in that, includes valve barrel, case, valve handle, the valve barrel is made by elastic material, the valve barrel is an irregular taper shape, the valve handle is a ladder type cylinder, a nozzle is connected on valve handle upper portion, the valve handle lower part is inserted the valve barrel top, the case is similar to a picture nail form, including the case seat that is located the bottom and the outlet pipe that is located the bottom central line, the inside cavity of outlet pipe, and be equipped with a plurality of limberss on this outlet pipe lateral wall, the outlet pipe inserts from the bottom of valve barrel, inserts inside the valve handle, the case seat hugs closely on the valve barrel inside wall, a jet pump storage fluid port is connected to the valve barrel bottom.

2. The check valve of claim 1, wherein the valve handle comprises an upper valve handle portion and a lower valve handle portion, wherein a protrusion is formed at a connection between the upper valve handle portion and the nozzle, a diameter of the upper valve handle portion is smaller than a diameter of the lower valve handle portion, the lower valve handle portion is inserted into and thermoplastic-molded with the inside of the top portion of the valve housing, and the outlet pipe of the valve core is inserted into the lower valve handle portion.

3. The check valve of claim 2, wherein the outlet pipe has a barb, and the inner sidewall of the lower portion of the valve stem has a groove matching the barb.

4. The check valve of claim 2, wherein a sealing ring is disposed between the lower portion of the valve handle and the water outlet pipe of the valve core, and the valve sleeve covers the water through hole of the water outlet pipe of the valve core.

5. The check valve as claimed in claim 1, wherein the valve core seat is tightly attached to the inner sidewall of the valve housing, a first sealed space is formed below the valve core seat, the valve housing and the liquid storage port of the injection pump, a second sealed space is formed above the valve core seat and the valve housing, the sidewall of the valve housing of the second sealed space extends obliquely downward, and the water through hole of the water outlet pipe is located in the second sealed space.

6. The check valve of claim 1, wherein the valve core seat is spherical.

7. The check valve of claim 1, wherein the outlet pipe is symmetrically provided with two water through holes.

8. The check valve of claim 1, wherein the outlet pipe is provided with a flexible rubber valve sheet, the valve sheet comprises a top sheet and a fixing column, the top sheet is tightly attached to the inner side wall of the outlet pipe, the fixing column is provided with a barb, the valve sheet is fixed to a fixing hole of the outlet pipe through the barb on the fixing column, and the water through hole is located between the top sheet and the inner side wall of the outlet pipe.

9. The check valve of claim 1 wherein said sleeve bottom portion has a lip portion that sealingly engages said pump reservoir.

10. The check valve of claim 1, wherein the housing is made of a soft plastic and the core and the stem are made of a hard plastic.

Technical Field

The invention relates to the technical field of valves, in particular to a check valve.

Background

The spray or liquid-spraying pump is ingenious in design and convenient to use, and is widely applied to the industries of daily chemicals, medicines and the like. The check valve is a valve capable of realizing one-way circulation, the conventional means of the injection mechanism of a liquid injection or spray pump is to arrange a check valve at the inlet and the outlet of a pumping pump respectively for pumping and injection control, and none of the used check valves is to arrange a valve clack made of steel balls or other materials instead of a metal spring, but the metal spring and the steel balls have the defects that the liquid and gas pollution caused by the corrosion of chemicals cannot be completely avoided, and the later recycling is inconvenient.

Secondly, the one-way valve has multiple matching layers and higher failure probability, and is not satisfactory in sealing reliability. Moreover, the check valve has the defects of large number of parts, high difficulty in assembly and part manufacturing and high production cost.

Therefore, the existing check valve is to be further improved.

Disclosure of Invention

The application provides a check valve adopts brand-new material and structure, solves the easy corrosive liquids of metal of the check valve among the prior art to and inconvenient later stage is retrieved, and the structure is complicated, produces and installs into this higher problem.

The application is realized by the following technical scheme:

the utility model provides a check valve, includes valve barrel, case, valve handle, the valve barrel is made by elastic material, the valve barrel is an irregular taper shape, the valve handle is a ladder type cylinder, a nozzle is connected on valve handle upper portion, the valve handle top is inserted to the valve handle lower part, the case is similar to a picture nail form, including the case seat that is located the bottom and the outlet pipe that is located the bottom central line, the inside cavity of outlet pipe, and be equipped with a plurality of limberss on this outlet pipe lateral wall, the outlet pipe inserts from the bottom of valve barrel, inserts inside the valve handle, the case seat is hugged closely on the valve barrel inside wall, a jet pump liquid storage mouth is connected to the valve barrel bottom.

As a preferred embodiment of the present application, the valve handle includes a valve handle upper portion and a valve handle lower portion, a protrusion is disposed at a connection portion between the valve handle upper portion and the nozzle, a diameter of the valve handle upper portion is smaller than a diameter of the valve handle lower portion, the valve handle lower portion is inserted into and thermally molded in the interior of the top portion of the valve housing, and the water outlet pipe of the valve core is inserted into the valve handle lower portion.

As the preferred embodiment of this application, there is the barb on the outlet pipe, be equipped with on the inside wall of valve handle lower part with barb assorted slot.

As a preferred embodiment of the present application, a sealing ring is disposed between the lower portion of the valve handle and the water outlet pipe of the valve core, and the valve sleeve covers the water through hole on the water outlet pipe of the valve core.

As the preferred embodiment of this application, the valve core seat hugs closely on the valve barrel inside wall, below the valve core seat with the valve barrel, spout pump stock solution mouth and form airtight space one, above the valve core seat with the valve barrel forms airtight space two, and this airtight space two's valve barrel lateral wall is the slant downwardly extending, the limbers of outlet pipe is located airtight space two is interior.

In a preferred embodiment of the present application, the valve core seat is a spherical ball.

In a preferred embodiment of the present invention, the water outlet pipe is symmetrically provided with two water through holes.

As the preferred embodiment of this application, be equipped with the valve block that the flexible glue was made on the outlet pipe, this valve block includes top thin slice and fixed column, on the outlet pipe inside wall was hugged closely to the top thin slice, be equipped with the barb on the fixed column, the valve block is fixed on the fixed orifices of outlet pipe through the barb on the fixed column, the limbers is located between top thin slice and the outlet pipe inside wall.

In a preferred embodiment of the present application, the bottom of the valve housing is provided with a rim portion, and the rim portion is in sealing connection with the liquid storage port of the pump.

In a preferred embodiment of the present application, the valve sleeve is made of soft plastic, and the valve core and the valve handle are made of hard plastic.

The working principle is as follows: the upper part of the valve handle is connected with a nozzle, the bottom of the valve sleeve is connected with a spray pump liquid storage port, when the valve handle exerts downward force, the valve sleeve deforms, a gap is formed between the valve core seat and the inner side wall of the valve sleeve at the moment, liquid in the first closed space enters the second closed space, and then flows out of the water outlet pipe through the water through hole and is sprayed out through the nozzle; when the valve handle is forced downwards, the valve sleeve restores to the original shape, and because the valve core seat is tightly attached to the inner side wall of the valve sleeve, outside air can only enter the first closed space and cannot enter the second closed space, so that the air is not returned at the moment of water spraying or mist spraying.

Has the advantages that:

the utility model provides a check valve has avoided adopting the metal, wholly adopts soft or hard working of plastics, and after the product is used up, can direct recycle, the recovery of spare part reworked material is simple and convenient, and the recovery cost is low, and the resource is recycled efficiently, and can not cause any pollution to the nature, has still ensured human health.

Drawings

Fig. 1 is a schematic view of an overall appearance structure of a valve housing of a check valve according to the present application.

FIG. 2 is a top view of a sleeve of a check valve of the present application.

Fig. 3 is a cross-sectional view taken along line a-a of fig. 2.

Fig. 4 is a schematic view of the overall appearance structure of a valve element of a check valve according to the present application.

FIG. 5 is a top view of a valve cartridge of a check valve of the present application.

Fig. 6 is a cross-sectional view taken along line B-B of fig. 5.

In the figure: 1, valve housing; 11 an edge portion; 2, a valve core; 21 valve core seat; 22 water outlet pipe; 221 a water through hole; 222 barbs; 3, a valve handle; 31, the upper part of the valve handle; 311 grooves; 32 lower part of the valve handle; 321 a projection; m, sealing a first space; and N is a closed space II.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

As shown in fig. 1-6, the valve sleeve 1, the valve core 2 and the valve handle 3 are included in the drawing, the valve sleeve 1 is made of soft plastic, and the valve core 2 and the valve handle 3 are made of hard plastic. The valve sleeve 1 is an irregular cone, the valve handle 3 is a step-type cylinder, the upper part of the valve handle 3 is connected with a nozzle, the lower part 32 of the valve handle is inserted into the top of the valve sleeve 1, the valve core 2 is similar to a drawing pin shape and comprises a valve core positioned at the bottom, 21 (the valve core seat can also be set into a spherical shape made of soft rubber) and a water outlet pipe 22 positioned on the central line of the bottom, the inside of the water outlet pipe 22 is hollow, a plurality of water through holes 221 are formed in the side wall of the water outlet pipe 22, the water outlet pipe 22 is inserted into the valve handle 3 from the bottom of the valve sleeve 1, the valve core seat 21 is tightly attached to the inner side wall of the valve sleeve 1, the bottom of the valve sleeve 1 is connected with a spray pump liquid.

The valve handle 3 comprises a valve handle upper part 31 and a valve handle lower part 32, a bulge 34 is arranged at the joint of the valve handle upper part 31 and the nozzle, the diameter of the valve handle upper part 31 is smaller than that of the valve handle lower part 32, the valve handle lower part 32 is inserted into and thermoplastic-molded in the top of the valve sleeve 1, the water outlet pipe 22 of the valve core 2 is inserted into the valve handle lower part 32, and a sealing ring is arranged between the valve handle lower part 32 and the water outlet pipe 22 of the valve core 2. The water outlet pipe 22 is provided with a barb 222, and the inner side wall of the lower part 32 of the valve handle is provided with a groove 311 matched with the barb 222.

The valve core seat 21 is tightly attached to the inner side wall of the valve sleeve 1, a closed space I is formed below the valve core seat 21, the valve sleeve 1 and a spray pump liquid storage port, a closed space II N is formed above the valve core seat 21 and the valve sleeve 1, the side wall of the valve sleeve 1 of the closed space II N extends obliquely downwards, and the water through hole 221 of the water outlet pipe 22 is located in the closed space II N. The valve sleeve 1 can also cover the water through hole 221 on the water outlet pipe 22 of the valve core 2 to prevent air from being sucked back into the enclosed space M.

Be equipped with the valve block that the flexible glue was made on outlet pipe 22, this valve block includes top thin slice and fixed column, and on the inside wall of outlet pipe 22 was hugged closely to the top thin slice, be equipped with the barb on the fixed column, the valve block was fixed on the fixed orifices of outlet pipe 22 through the barb on the fixed column, and limbers 221 is located between top thin slice and the inside wall of outlet pipe 22.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.