CN218718987U

CN218718987U - Single-handle rotary closing type thermostatic valve core

Info

Publication number: CN218718987U
Application number: CN202222991380.2U
Authority: CN
Inventors: 林华青
Original assignee: Taizhou Zhonglin Intelligent Sanitary Ware Technology Co ltd
Current assignee: Taizhou Zhonglin Intelligent Sanitary Ware Technology Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-03-24
Anticipated expiration: 2032-11-10

Abstract

The utility model provides a single rotatory closed thermostatic cartridge, including handle, handle seat and the case shell that connects gradually, the handle seat with be equipped with double-screw bolt, plunger and plug in the cavity that the case shell formed, the top surface and the bottom surface of plunger are equipped with end face seal, the plunger inner wall is equipped with annular step face, be equipped with the step face sealing washer on the annular step face, the double-screw bolt bottom surface portable extremely annular step face and with the step face sealing washer closely laminates. The utility model provides a single close formula thermostatic cartridge to the rotation, small in size practices thrift the cost, and adaptability is good, can realize single the function of closing.

Description

Single-handle rotary closing type thermostatic valve core

Technical Field

The utility model relates to a thermostatic cartridge technical field, concretely relates to single rotatory closed thermostatic cartridge.

Background

The thermostatic valve core is a device which automatically adjusts the mixing proportion of cold water and hot water, so that the temperature of the mixed water can be automatically kept at a set temperature. As shown in fig. 1, the thermostatic valve core structure of the prior art generally includes a handle 100, a handle seat 200, a valve body 300, a stud 400, a plunger 500, a core rod 600, a core rod spring 700, and a return ring 800, where the core rod 600 is a heat-sensitive element and is used to control the reciprocating movement of a piston through temperature sensing, and to regulate the flow ratio of cold water and hot water entering the valve body, so as to achieve the effect of discharging water at a constant temperature.

The thermostatic valve core with the structure is of a single-handle type, can only adjust water temperature, and cannot realize the closing function of water inlet; the common thermostatic valve core with the closing function is of a double-handle type, the function of closing water inlet is realized by additionally arranging a handle, and the structure has high manufacturing cost, large volume and poor faucet adaptability.

SUMMERY OF THE UTILITY MODEL

In order to compensate the not enough of existence among the prior art, the utility model provides a single rotatory closed thermostatic valve core, small in size practices thrift the cost, and adaptability is good, can realize single the function of closing.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a single rotatory closed thermostatic valve core, includes handle, handle seat and the case shell that connects gradually, be equipped with double-screw bolt, plunger and plug in the cavity that handle seat and case shell formed, the top surface and the bottom surface of plunger are equipped with the end face sealing washer, the plunger inner wall is equipped with annular step face, be equipped with the step face sealing washer on the annular step face, the double-screw bolt bottom surface can move to annular step face and with the step face sealing washer closely laminates.

Furthermore, the end face sealing ring and the step face sealing ring are both formed by injection molding of silica gel.

Furthermore, the plunger is provided with a core rod connecting hole and a plurality of water through holes, and the core rod is connected in the core rod connecting hole in a threaded mode.

Furthermore, the top end of the stud is in threaded connection with the handle, the bottom end of the stud is connected with the top end of the core rod, and a core rod spring is sleeved on the lower portion of the core rod.

Furthermore, the outer wall of the lower portion of the handle seat is connected with the inner thread of the top end of the valve core shell, and the end face sealing ring of the plunger, which can move to the top face, is tightly attached to the bottom face of the handle seat.

Furthermore, the inner wall of the valve core shell, which is close to the bottom surface of the plunger, is provided with a lower step surface, and the end face sealing ring, which can move to the bottom surface of the plunger, is tightly attached to the lower step surface.

Furthermore, a cold water inlet is formed in the position, close to the bottom surface of the handle seat, of the valve core shell, a hot water inlet is formed in the position, close to the lower step surface, of the valve core shell, and an isolation sealing ring is arranged on the outer wall of the plunger.

Furthermore, a mixed water outlet is formed in the bottom surface of the valve core shell.

Compared with the prior art, the utility model discloses following beneficial technological effect has:

(1) The utility model arranges the annular step surface and the step surface sealing ring on the inner wall of the plunger, when the stud moves downwards to the bottom by rotating the handle, the bottom surface of the stud can be clung to the step surface sealing ring, thereby preventing water from flowing into the plunger and further realizing the function of closing water inlet; the plunger adopts three-layer silica gel structure, and the security performance is better, and hot and cold water terminal surface is sealed for silica gel when closing, and closing performance is stable, and life is longer.

(2) The utility model discloses small in size, it is applicable in multiple tap, the single formula design can effectively reduce the manufacturing cost of tap, adopts the water conservancy diversion design, and the hot and cold water mixing effect is better, and the performance is more stable.

Drawings

Fig. 1 is a structural sectional view of a prior art thermostatic cartridge.

Fig. 2 is a sectional view (temperature-adjusting state) of a single-handle rotary closing type thermostatic cartridge according to the present invention.

Fig. 3 is a sectional view (closed state) of a single-handle rotary shut-off thermostatic cartridge according to the present invention.

Fig. 4 is a diagram of the structure of the plunger of the present invention.

Wherein: 1. a handle; 2. a handle seat; 3. a valve core housing; 301. a cold water inlet; 302. a lower step surface; 303. a hot water inlet; 304. a water mixing cavity; 305. a mixed water outlet; 4. a stud; 5. a plunger; 501. an annular step surface; 502. connecting holes of the core rod; 503. water passing holes; 6. a core rod; 7. a core rod spring; 8. an end face seal ring; 9. isolating the sealing ring; 10. and a step surface sealing ring.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be embodied in many other forms without departing from the spirit or essential characteristics thereof, and it should be understood that the invention is not limited to the specific embodiments disclosed below.

Example 1

As shown in fig. 2-4, the single-handle rotary closing type thermostatic valve core comprises a handle 1, a handle seat 2 and a valve core shell 3 which are connected in sequence, wherein a stud 4, a plunger 5, a core rod 6 and a core rod spring 7 are arranged in a cavity formed by the handle seat 2 and the valve core shell 3.

The handle 1 is axially and rotatably connected to the top of the handle seat 2, and the bottom end of the handle 1 is in threaded connection with the stud 4. Plunger 5 axial slip locates in case shell 3, and its top surface and bottom surface all are equipped with end face seal 8, and the outer wall middle part is equipped with keeps apart sealing washer 9 to separate the water of plunger 5 upper portion and lower part.

The outer wall of the lower part of the handle seat 2 is connected with the internal thread at the top end of the valve core shell 3, so that the inner parts can be conveniently detached and installed. The valve core shell 3 is provided with a cold water inlet 301 near the bottom surface of the handle seat 2, and cold water flows into the plunger 5 from the cold water inlet 301 through a gap between the top surface of the plunger 5 and the bottom surface of the handle seat 2. After the plunger 5 moves to be connected with the handle seat 2, the end face sealing ring 8 on the top surface is tightly attached to the bottom surface of the handle seat 2, so that cold water inlet is closed.

The inner wall of the valve core shell 3 close to the bottom surface of the plunger 5 is provided with a lower step surface 302. A hot water inlet 303 is arranged on the valve core shell 3 near the lower step surface 302, and hot water flows into the valve core shell 3 from the hot water inlet 303 through a gap between the bottom surface of the plunger 5 and the lower step surface 302. After the plunger 5 moves to be connected with the lower step surface 302, the end surface sealing ring 8 on the bottom surface is tightly attached with the lower step surface 302, so that the cold water inlet is closed.

The lower part of the valve core shell 3 is provided with a water mixing cavity 304, the bottom surface of the water mixing cavity 304 is provided with a mixed water outlet 305, and cold water and hot water enter the water mixing cavity 304 to be mixed and then are discharged through the mixed water outlet 305.

The inner wall of the plunger 5 is provided with an annular step surface 501, the middle part is provided with a core rod connecting hole 502, and a plurality of water through holes 503 are arranged around the core rod connecting hole 502. The mandrel 6 is screwed into the mandrel coupling hole 502. The top end of the core rod 6 is clamped with the stud 4, the lower part of the core rod is arranged in the water mixing cavity 304, and the outer wall of the core rod is sleeved with a core rod spring 7.

The top end of the stud 4 is connected with the handle 1 through threads, and the vertical position of the stud 4 can be adjusted by rotating the handle 1. The annular step surface 501 is provided with a step surface sealing ring 10, after the stud 4 moves to be connected with the annular step surface 501, the bottom surface of the stud 4 is tightly attached to the step surface sealing ring 10, so that cold water cannot flow into the mixing cavity 304 through the water hole 503, and meanwhile, the bottom surface of the plunger 5 is also tightly attached to the lower step surface 302, so that cold water and hot water cannot enter the mixing cavity 304, and the water inlet function of closing water by rotating one handle is realized.

Preferably, the end face seal ring 8 and the step face seal ring 10 are both formed by silica gel injection molding, so that the firmness of the product is ensured, and the service life is prolonged.

Although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications, equivalents, improvements and the like can be made in the technical solutions of the foregoing embodiments or in some technical features of the foregoing embodiments, but all modifications, equivalents, improvements and the like within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a single rotatory closed thermostatic valve core, includes handle, handle seat and the case shell that connects gradually, the handle seat with be equipped with double-screw bolt, plunger and plug in the cavity that the case shell formed, the top surface and the bottom surface of plunger are equipped with end face seal circle, its characterized in that: the inner wall of the plunger is provided with an annular step surface, the annular step surface is provided with a step surface sealing ring, and the bottom surface of the stud can move to the annular step surface and is tightly attached to the step surface sealing ring.

2. The single-handle rotary-close thermostatic cartridge according to claim 1, wherein: the end face sealing ring and the step face sealing ring are both formed by silica gel injection molding.

3. The single-handle rotary-close thermostatic cartridge according to claim 2, wherein: the plunger is provided with a core rod connecting hole and a plurality of water through holes, and the core rod is connected in the core rod connecting hole in a threaded mode.

4. The single-handle rotary-closing thermostatic cartridge according to claim 3, wherein: the top end of the stud is in threaded connection with the handle, the bottom end of the stud is connected with the top end of the core rod, and a core rod spring is sleeved on the lower portion of the core rod.

5. The single-handle rotary-close thermostatic cartridge according to claim 4, wherein: the outer wall of the lower portion of the handle seat is connected with the inner thread of the top end of the valve core shell, and the end face sealing ring, which can move to the top face, of the plunger is tightly attached to the bottom face of the handle seat.

6. The single-handle rotary-close thermostatic cartridge according to claim 5, wherein: the inner wall of the valve core shell, which is close to the bottom surface of the plunger, is provided with a lower step surface, and the end face sealing ring, which can move to the bottom surface, of the plunger is tightly attached to the lower step surface.

7. The single-handle rotary-close thermostatic cartridge according to claim 6, wherein: the valve core shell is provided with a cold water inlet close to the bottom surface of the handle seat, a hot water inlet close to the lower step surface, and the outer wall of the plunger is provided with an isolation sealing ring.

8. The single-handle rotary-close thermostatic cartridge according to claim 7, wherein: and a mixed water outlet is formed in the bottom surface of the valve core shell.