Check valve capable of preventing sealing from being affected by incrustation scale

Abstract

A check valve capable of preventing incrustation from affecting sealing comprises a valve body, a valve cover, a spring and a valve element, the valve body comprises a water inlet pipe, a valve element cavity formed in the top of the water inlet pipe, a valve element seat arranged on a bottom plate of the valve element cavity, a water outlet cavity and a water outlet pipe, and the bottom plate of the valve element cavity and the bottom plate of the water outlet cavity have height difference; the valve element comprises a guide disc, a spring column base arranged on the upper surface of the guide disc and a valve element body arranged on the lower surface of the guide disc, the guide disc is in clearance fit with the valve element cavity, the valve deck and the valve element cavity are buckled and sealed, the spring column base extends into the spring, the guide disc supports the spring, and the upper end of the spring is matched with the valve deck. And the valve core body is matched with the valve core seat. The height difference exists between the bottom plate of the valve element seat and the bottom plate of the water outlet cavity, water entering the valve element cavity quickly enters the water outlet cavity, no water is accumulated in the valve element cavity, scale is prevented from being generated, the sealing performance is kept, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for a food processor or coffee machine, in particular to a check valve. BACKGROUND

[0002] The prior art, Chinese patent 201220422966.0, and a check valve, comprising a valve head, a plunger, a valve core and a spring, the inside of the valve head is provided with a water inlet hole, a water outlet hole and a plunger hole, the water inlet hole and the plunger hole are coaxially communicated, the water outlet hole is vertically communicated with one end of the plunger hole, one end of the plunger is provided with a plunger inner hole, the main body of the valve core is inserted into the plunger inner hole, the inside of the valve core is provided with a valve core hole for assembling the spring, one end of the spring is axially positioned with the bottom wall of the plunger inner hole, the other end is axially positioned with the bottom wall of the valve core hole, the part of the valve core exposed from the plunger inner hole has a conical working end with an outer diameter gradually reduced from inside to outside, the shape of the inner end of the plunger hole matches the shape of the working end of the valve core. The problem is that water scale affects the sealing check performance. SUMMARY

[0003] The utility model aims at providing a check valve of preventing water scale from affecting sealing, which has the characteristics of preventing water scale deposition and high sealing performance.

[0004] The utility model is realized in this way: a check valve of preventing water scale from affecting sealing, which is characterized by comprising a valve body, a valve cover, a spring and a valve core,

[0005] The valve body comprises a water inlet pipe, a valve core cavity arranged at the top of the water inlet pipe, a valve core seat arranged on the bottom plate of the valve core cavity, a water outlet cavity and a water outlet pipe, and the bottom plate of the valve core cavity and the bottom plate of the water outlet cavity have a height difference;

[0006] The valve core comprises a guide disc, a spring column seat arranged on the upper surface of the guide disc and a valve core body arranged on the lower surface,

[0007] The guide disc is gap-fitted with the valve core cavity, the valve cover is buckled and sealed with the valve core cavity, the spring column extends into the spring, the guide disc supports the spring, and the upper end of the spring is matched with the valve cover; the valve core body is matched with the valve core seat.

[0008] The check valve of preventing water scale from affecting sealing is characterized in that: a cylindrical seat is arranged on the top plate of the valve cover,

[0009] The upper end of the valve core cavity is provided with a reverse conical frustum part;

[0010] Further comprising a sealing ring,

[0011] The sealing ring is arranged in the reverse conical frustum part, the cylindrical seat penetrates through the sealing ring and is inserted into the reverse conical frustum part and presses the sealing ring tightly; the spring extends into the cylindrical seat.

[0012] The aforementioned check valve, designed to prevent scale buildup from affecting the seal, is characterized in that the valve core seat is annular.

[0013] The aforementioned check valve, designed to prevent scale buildup from affecting the seal, is characterized in that the axes of the valve core cavity, valve core seat, and inlet pipe coincide.

[0014] The aforementioned check valve, designed to prevent scale buildup from affecting the seal, is characterized in that its valve core is made of silicone material.

[0015] The check valve designed to prevent scale buildup from affecting the seal is characterized by the following features: the water outlet chamber is circular, and a drain hole is provided on the bottom plate of the water outlet chamber;

[0016] It also includes plugs, which fit into and seal the drain hole.

[0017] The aforementioned check valve, designed to prevent scale buildup from affecting the seal, is characterized in that its valve core is made of silicone material.

[0018] This utility model discloses a check valve that prevents scale buildup from affecting the seal. There is a height difference between the bottom plate of the valve core seat and the bottom plate of the outlet chamber. Water entering the valve core chamber quickly enters the outlet chamber, and there is no water accumulation in the valve core chamber, which prevents scale buildup, maintains the seal, and extends the service life. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the present invention.

[0020] Figure 2 This is a perspective view of the present invention.

[0021] Figure 3 This is one of the exploded perspective views of this utility model.

[0022] Figure 4 This is the second exploded perspective view of this utility model. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or it can be detachable connection, or it can be integrally connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0025] As shown in Figure 1 A check valve of waterproof scale influence sealing, including valve body 1, valve cover 2, spring 3 and valve core 4,

[0026] Valve body 1 includes water inlet pipe 11, valve core cavity 12 arranged at the top of water inlet pipe 11, valve core seat 13 arranged on the bottom plate of valve core cavity 12, water outlet cavity 14 and water outlet pipe 15, the valve core cavity and water outlet cavity are communicated, the bottom plate of valve core cavity 12 and the bottom plate of water outlet cavity 14 have height difference, and the water outlet pipe 15 is arranged at the top of water outlet cavity 14, by adopting such structure, after water inlet pipe stops water inlet, the water in valve core cavity 12 all enters water outlet cavity 14, and scale deposition is prevented.

[0027] Valve core 4 includes guide disc 41, spring column seat 42 arranged on the upper surface of guide disc 41 and valve core body 43 arranged on the lower surface, guide disc 41 and valve core cavity 12 are slidingly matched, and scale on the wall of valve core cavity 12 can also be effectively removed.

[0028] Guide disc 41 is matched with the gap of valve core cavity 12, valve cover 2 is buckled and sealed with valve core cavity 12, spring column seat 42 extends into spring 3, guide disc 41 supports spring 3, and the upper end of spring 3 is matched with valve cover 2, and valve core body 43 is matched with valve core seat 13.

[0029] As a further improvement of the utility model: the top plate of the valve cover 2 is provided with a cylindrical seat 21,

[0030] The upper end of the valve core cavity 12 is provided with a reverse conical frustum portion 121;

[0031] Further comprising a sealing ring 5,

[0032] The sealing ring 5 is arranged in the reverse conical frustum portion 121, the cylindrical seat 21 is inserted into the reverse conical frustum portion 121 through the sealing ring 5 and presses the sealing ring 5 tightly, and the spring 3 extends into the cylindrical seat 21.

[0033] The valve core seat 13 is in the form of a circular ring.

[0034] The axis of the valve core cavity 12, the valve core seat 13 and the water inlet pipe 11 coincides.

[0035] The valve core 4 is made of silica gel material.

[0036] As further improvement of the utility model: the water outlet cavity 14 is circular, and the bottom plate of the water outlet cavity 14 is provided with a discharge hole 141;

[0037] Further comprising a plug 6, the plug 6 is embedded with the discharge hole 141 and sealed. With such structure, during maintenance, the plug 6 can be disassembled, and the water scale is removed.

[0038] The valve core 4 is made of silica gel material.

[0039] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A back valve sealed against scale effects, characterized in that: The valve body, the valve cover, the spring and the valve core, The valve body comprises a water inlet pipe, a valve core cavity arranged at the top of the water inlet pipe, a valve core seat arranged on the bottom plate of the valve core cavity, a water outlet cavity and a water outlet pipe, and the bottom plate of the valve core cavity and the bottom plate of the water outlet cavity have a height difference; The valve core comprises a guide disc, a spring column seat arranged on the upper surface of the guide disc and a valve core body arranged on the lower surface, The guide disc is in clearance fit with the valve core cavity, the valve cover is in clamping and sealing fit with the valve core cavity, the spring column seat extends into the spring, the guide disc supports the spring, the upper end of the spring is in fit with the valve cover, and the valve core body is in fit with the valve core seat.

2. A back check valve sealed against scale effects according to claim 1, characterized in that: A cylindrical seat is arranged on the top plate of the valve cover, An inverted conical frustum is arranged at the upper end of the valve core cavity; A sealing ring is further arranged, The sealing ring is arranged in the inverted conical frustum, the cylindrical seat is inserted into the inverted conical frustum and presses the sealing ring, and the spring extends into the cylindrical seat.

3. A back check valve sealed against scale effects according to claim 1, characterized in that: The valve core seat is in the shape of a ring.

4. A back check valve sealed against scale effects according to claim 1, characterized in that: The axes of the valve core cavity, the valve core seat and the water inlet pipe coincide.

5. A non-scaling effect sealed check valve according to claim 1, characterized in that: The water outlet cavity is in the shape of a circle, and a drain hole is arranged on the bottom plate of the water outlet cavity; A plug is further arranged, and the plug is in fit and sealing with the drain hole.

6. A seal against scale effects check valve according to claim 1, 2, 3, 4 or 5, characterized in that: The valve core is made of silica gel material.

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