Needle valve structure for manually and finely adjusting water flow of coffee pot

Abstract

The utility model discloses a needle valve structure for manually and finely adjusting water flow of a coffee pot, and mainly relates to the technical field of coffee pots. Comprising a valve body, a valve cavity is formed in the valve body, a valve rod is connected into the valve cavity, a hand wheel is arranged at the end, extending out of the valve body, of the valve rod, internal threads are arranged on the inner wall of the valve cavity, external threads matched with the internal threads are arranged on the valve rod, and a water outlet hole is formed in the bottom of the end, away from the hand wheel, of the valve cavity. The end, away from the hand wheel, of the valve cavity is provided with a valve hole, the end, away from the hand wheel, of the valve rod is provided with a conical head, the end, close to the hand wheel, of the valve hole is provided with a conical hole matched with the conical head, the end, away from the valve cavity, of the valve hole is provided with a communicating hole extending upwards, and the top of the communicating hole is provided with a connector communicated with a water outlet of the ice drip coffee pot. The small screw pitch is adopted, so that the water flow change caused by rotating the hand wheel is small, an operator can freely control the dripping speed, and the use requirement for extracting coffee through ice drops is met.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee pots, in particular to a needle valve structure for manually and finely adjusting the water flow of a coffee pot. Background Art

[0002] Ice drip coffee, also known as drip coffee, is a way of making coffee drinks. Ice drip coffee uses ice water, cold water or ice cubes to extract coffee. This extraction process is very slow. When ice dripping coffee, it is necessary to first use a continuous small stream of water to evenly wet the coffee powder, and then, according to the extraction requirements, use a dripping speed between 10 seconds 5 drops and 10 seconds 15 drops slowly. The water flow regulating valve of existing ice drip coffee pots often cannot meet the above requirements, resulting in a poor taste of coffee after ice drip extraction. Utility Model Content

[0003] The purpose of the utility model is to solve the problems existing in the prior art and provide a needle valve structure for manually finely adjusting the water flow of a coffee pot. A smaller pitch is used to reduce the change in water flow caused by turning the hand wheel, so that the operator can freely control the dripping speed and meet the needs of using ice drip coffee.

[0004] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A needle valve structure for manually finely adjusting the water flow of a coffee pot comprises a valve body installed at the water outlet of the coffee pot, a valve cavity is arranged in the valve body, a valve stem is connected in the valve cavity, the left end of the valve stem extends outward from the valve body, an internal thread is arranged on the inner wall of the valve cavity, an external thread adapted to the internal thread is arranged on the valve stem, the pitch of the external thread is 0.5mm-1.5mm, a water outlet is arranged at the bottom of the right end of the valve cavity, a valve hole connected to the valve cavity is arranged at the right end of the valve cavity, a conical head is arranged at one end of the valve stem close to the valve hole, the conical angle of the conical head is 15°-45°, a conical hole adapted to the conical head is arranged at the left end of the valve hole, a communicating hole extending upward is arranged at the right end of the valve hole, an interface connected to the water outlet of the coffee pot is arranged at the top of the communicating hole, and the communicating hole, the valve hole and the water outlet are all located in the valve body.

[0006] Preferably, a hand wheel is provided at one end of the valve stem extending out of the valve body.

[0007] Preferably, the axis center line of the conical head coincides with the axis center line of the conical hole, the maximum outer diameter of the conical head is greater than the maximum inner diameter of the conical hole, and the minimum outer diameter of the conical head is smaller than the minimum inner diameter of the conical hole.

[0008] Preferably, a cavity is provided at the top of the communicating hole, a connecting hole is provided at the top of the cavity, and a valve port two-way joint is provided at the top of the connecting hole.

[0009] Preferably, the cone angle of the conical head is 30°.

[0010] Preferably, the pitch of the external thread is 1 mm.

[0011] Preferably, a limit screw for limiting the movement range of the valve stem is provided on the outer wall of the valve body, and an annular groove adapted to the limit screw is provided on the outer wall of the valve stem.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model adopts a smaller cone angle and a smaller pitch to more finely control the diameter change of the cone gap, thereby achieving fine adjustment of the water flow rate. It can not only finely adjust the water dripping speed, but also produce a continuous small water flow. The smaller pitch makes the water flow change caused by turning the hand wheel small, so that the operator can freely control the dripping speed, which can meet the needs of ice drip coffee extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the utility model.

[0016] The numbers in the accompanying drawings are: 1, valve body; 2, valve cavity; 3, valve stem; 4, hand wheel; 5, water outlet hole; 6, valve hole; 7, connecting hole; 8, cavity; 9, valve port two-way joint; 10, limit top screw; 31, conical head; 32, annular groove. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

[0018] Example: As attached Figure 1-2As shown, the utility model is a needle valve structure for manually finely adjusting the water flow of a coffee pot, comprising a valve body 1 installed at the water outlet of the coffee pot, a valve cavity 2 is arranged in the valve body 1, the axis of the valve cavity 2 is horizontal, and one end of the valve cavity 2 is open, a valve stem 3 is connected to the valve cavity 2, the left end of the valve stem 3 extends outward from the valve body 1, and a hand wheel 4 is installed at the end of the valve stem 3 extending out of the valve body 1, an internal thread is arranged on the inner wall of the valve cavity 2, and an external thread adapted to the internal thread is arranged on the valve stem 3, the valve stem 3 can move along the axis of the valve cavity 2 while rotating, the pitch of the external thread is 0.5mm-1.5mm, and a water outlet hole is vertically arranged at the bottom of the right end of the valve cavity 2 5, the top end of the water outlet hole 5 is communicated with the valve cavity 2, and the bottom end is communicated with the outside world. A valve hole 6 is horizontally arranged at the right end of the valve cavity 2, and the axis center line of the valve hole 6 coincides with the axis center line of the valve stem 3. A conical head 31 is arranged at the end of the valve stem 3 away from the hand wheel 4, and the conical head 31 and the valve stem 3 adopt an integrated structure. The small diameter end of the conical head 31 is located at the end of the conical head 31 away from the valve stem 3. A conical hole adapted to the conical head 31 is arranged at the left end of the valve hole 6, and a connecting hole 7 extending vertically upward is arranged at the right end of the valve hole 6. An interface connected to the water outlet of the ice drip coffee pot is arranged at the top of the connecting hole 7. The connecting hole 7, the valve hole 6 and the water outlet hole 5 are all located in the valve body 1.

[0019] Preferably, the axis of the conical head 31 coincides with the axis of the conical hole, the maximum outer diameter of the conical head 31 is greater than the maximum inner diameter of the conical hole, and the minimum outer diameter of the conical head 31 is smaller than the minimum inner diameter of the conical hole.

[0020] Preferably, in order to facilitate the installation of the utility model, a cavity 8 is provided at the top of the connecting hole 7, a connecting hole is provided at the top of the cavity 8, a valve port two-way joint 9 is provided at the top of the connecting hole, and the axis line of the valve port two-way joint 9 can coincide with the axis line of the water outlet hole 5.

[0021] Preferably, the cone angle of the conical head 31 is 30°, and the pitch of the external thread is 1 mm. A smaller cone angle and a smaller pitch can more finely control the diameter change of the cone gap, thereby achieving fine adjustment of the water flow.

[0022] Preferably, a limit screw 10 for limiting the movement range of the valve stem 3 is provided on the outer wall of the valve body 1, and an annular groove 32 adapted to the limit screw 10 is provided on the outer wall of the valve stem 3. The limit screw 10 is inserted into the annular groove 32, and the movement range of the valve stem 3 is limited by the length of the annular groove 32, thereby limiting the maximum distance that the valve stem 3 can withdraw.

[0023] Working principle: water enters the cavity 8 of the valve body 1 from the two-way joint 9 of the valve port, then enters the connecting hole 7 from the cavity 8, then enters the valve hole 6 from the connecting hole 7, and then enters the matching clearance between the conical head 31 and the conical hole from the valve hole 6, and then flows out of the valve body 1 through the water outlet 5. When adjusting the water flow, turn the hand wheel 4, the hand wheel 4 drives the valve stem 3 to rotate, and the valve stem 3 moves along the axis while rotating, so that the matching clearance between the conical head 31 and the conical hole changes. When the conical head 31 and the conical hole are tightly matched, the water passage is completely closed and water cannot flow out of the valve body 1; when there is a gap between the conical head 31 and the conical hole, the water passage is opened and water can flow out of the valve body 1. By adjusting the gap between the conical head 31 and the conical hole, the water flow can be adjusted.

[0024] The utility model is used for adjusting the drip rate of an ice-drip coffee pot. When ice-drip coffee is extracted, it is necessary to first use a continuous small water flow to evenly wet the coffee powder, and then according to the extraction requirements, use a drip rate of 5 drops per 10 seconds to 15 drops per 10 seconds to slowly drip. The utility model can adjust the water flow rate more finely and can also generate a continuous small water flow. A smaller pitch is used to reduce the change in water flow caused by turning the hand wheel, so that the operator can freely control the drip rate, which can meet the use needs of ice-drip coffee extraction.

Claims

1. A needle valve structure for manually finely adjusting the water flow of a coffee pot, characterized in that: The invention comprises a valve body (1) installed at the water outlet of a coffee pot, wherein a valve cavity (2) is arranged in the valve body (1), a valve stem (3) is connected to the valve cavity (2), the left end of the valve stem (3) protrudes outward from the valve body (1), an internal thread is arranged on the inner wall of the valve cavity (2), the valve stem (3) is provided with an external thread adapted to the internal thread, the pitch of the external thread is 0.5 mm-1.5 mm, a water outlet hole (5) is arranged at the bottom of the right end of the valve cavity (2), and a valve hole (6) is arranged at the right end of the valve cavity (2) to be connected to the valve cavity ( 2) connected to the valve hole (6), the valve stem (3) is provided with a conical head (31) at one end close to the valve hole (6), the conical angle of the conical head (31) is 15°-45°, the left end of the valve hole (6) is provided with a conical hole adapted to the conical head (31), the right end of the valve hole (6) is provided with a connecting hole (7) extending upward, the top of the connecting hole (7) is provided with an interface connected to the water outlet of the coffee pot, and the connecting hole (7), the valve hole (6) and the water outlet (5) are all located in the valve body (1).

2. The needle valve structure for manually finely adjusting the water flow of a coffee pot according to claim 1, characterized in that: A hand wheel (4) is provided at one end of the valve stem (3) extending out of the valve body (1).

3. The needle valve structure for manually finely adjusting the water flow of a coffee pot according to claim 1, characterized in that: The axis center line of the conical head (31) coincides with the axis center line of the conical hole, the maximum outer diameter of the conical head (31) is greater than the maximum inner diameter of the conical hole, and the minimum outer diameter of the conical head (31) is smaller than the minimum inner diameter of the conical hole.

4. The needle valve structure for manually finely adjusting the water flow of a coffee pot according to claim 1, characterized in that: A cavity (8) is provided at the top of the communicating hole (7), a connecting hole is provided at the top of the cavity (8), and a valve port two-way joint (9) is provided at the top of the connecting hole.

5. The needle valve structure for manually finely adjusting the water flow of a coffee pot according to claim 1, characterized in that: The cone angle of the cone head (31) is 30°.

6. The needle valve structure for manually finely adjusting the water flow of a coffee pot according to claim 1, characterized in that: The pitch of the external thread is 1 mm.

7. The needle valve structure for manually finely adjusting the water flow of a coffee pot according to claim 1, characterized in that: A limit screw (10) for limiting the movement range of the valve stem (3) is provided on the outer wall of the valve body (1), and an annular groove (32) adapted to the limit screw (10) is provided on the outer wall of the valve stem (3).

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