Improved structure of valve core

Abstract

The utility model discloses an improved structure of a valve core, which relates to the field of valve cores and comprises a core cap, the core cap is fixedly connected with a core body, a sealing ring is fixedly sleeved on the outer wall of the core body, a core rod is movably connected in the core body, and a limit block is movably mounted at the top of the core rod through a screw. The bottom of the core rod is fixedly connected with a core seat, a sealing gasket is embedded in the core seat, the core seat is movably connected with the bottom of the core body, a second threaded groove is reserved in the core body, an inner ring of the second threaded groove is in threaded connection with a threaded block, and the threaded block is movably connected with the bottom of the core body. And the threaded block is movably connected with a fixed mounting block clamped on the outer wall of the core rod through a core spring. Plane sealing is adopted, the core spring is of a conical structure, the elastic force and the contact area of the core spring are large, the sealing effect is good, the whole valve core can be repeatedly used due to the fact that the core spring is replaceable, and the valve core is more economical and environmentally friendly.

Description

Technical Field

[0001] The utility model relates to the field of valve cores, in particular to an improved structure of a valve core. Background Art

[0002] The expansion tank is a common and widely used device. It is widely used in construction engineering, water conservancy engineering, petrochemical industry, pharmaceuticals, food and other fields. The function of the expansion tank is to store a large amount of energy through the energy of compressed gas and release energy when needed. When the system working pressure exceeds the set pressure, the gas in the system will enter the expansion tank, compress the air in the tank and store the energy. When the system working pressure is lower than the set pressure, the gas in the expansion tank will automatically expand and release energy to maintain the stability of the system working pressure. The expansion tank will be pre-filled with a certain pressure of gas when leaving the factory. Each expansion tank is equipped with an inflation port like a valve core. If it is found that the pressure of the expansion tank is insufficient, the air compressor can be connected to the inflation port to replenish it in time. If the expansion tank fails and cannot maintain pressure, and the expansion tank tube is intact, it is very likely that the valve core is damaged.

[0003] The existing valve core still has the following problems when in use: the existing valve core adopts axial side sealing, relies on elastic force to compress the sealing ring for sealing, the axial spring contact sealing cross-section is small, and the spring force is reduced during the compression process, so the sealing effect is poor, which can easily cause the expansion tank to fail one after another and fail to maintain pressure, resulting in insufficient pressure in the cooling system.

[0004] Therefore, it is necessary to invent a valve core improved structure to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an improved valve core structure to solve the problem that the existing valve core proposed in the above background technology adopts axial side sealing, relies on elastic force to compress the sealing ring for sealing, the axial spring contact sealing cross-section is small, and the spring force is reduced during the compression process, so the sealing effect is poor, which can easily cause the expansion tank to fail one after another, and the pressure cannot be maintained, resulting in insufficient pressure in the cooling system.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an improved valve core structure, comprising a core cap, the core cap is fixedly connected to the core body, and the outer wall of the core body is fixedly sleeved with a sealing ring, and the core body is movably connected to a core rod, the top of the core rod is movably installed with a limit block by screws, the bottom of the core rod is fixedly connected to a core seat, and a sealing gasket is embedded in the core seat, and the core seat is movably connected to the bottom of the core body, and also includes:

[0007] The disassembly and replacement component is that the core body is provided with a second thread groove, and the inner circle of the second thread groove is threadedly connected with a thread block, and the thread block is movably connected with a fixed installation block mounted on the outer wall of the core rod through a core spring.

[0008] Preferably, the end of the limit block is fixedly connected with a screw, and the screw matches a thread groove reserved at the top of the core rod, so that the core rod can be pulled out from the core body after the limit block is twisted and removed.

[0009] Preferably, an annular hollow area is provided inside the threaded block, the core rod passes through the hollow area reserved inside the threaded block, and a square toggle block is fixedly connected to the annular inner wall of the threaded block. The toggle block does not contact the core rod, which makes it convenient to toggle the toggle block to mobilize the movement of the threaded block, thereby driving the separation of the entire core spring and the core body.

[0010] Preferably, the lower end of the core spring is fixedly connected to the inner wall of the threaded block, and the upper end of the core spring is fixedly connected to the bottom wall of the fixed mounting block. The threaded block movably mounted with the core rod and the fixed mounting block ensure the subsequent replaceable installation of the core spring, and the core spring is conical.

[0011] Preferably, a columnar through hole is reserved inside the fixed installation block, and the core rod passes through the through hole, so as to facilitate the installation of the fixed installation block and the core rod, that is, to facilitate the movable installation of the core spring and the core rod.

[0012] Preferably, two symmetrical notches are reserved inside the fixed installation block, and three sides of the notches are open, and the inside of the notches are movably connected to side plates via springs.

[0013] Preferably, a square plug rod is fixedly connected to the outer wall of the side plate, the plug rod is located in the inner ring of the spring, and the plug rod extends through the through hole reserved inside the fixed mounting block, and the end of the plug rod matches the engagement groove reserved inside the core rod, and the side plate is moved to drive the plug rod to move and match the engagement groove, which facilitates the engagement installation of the fixed mounting block and the core rod, ensuring the normal use of the subsequent core spring.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. The utility model adopts a plane seal, and the core spring is a conical structure, the core spring has a large elastic force and contact area, and the sealing effect is good;

[0016] 2. Twist the limit block to separate the limit block and the screw from the top of the core rod, and then press the core rod downward to drive the core seat fixedly connected to the core rod to move, leaving a gap between the core seat and the bottom of the core body. Subsequently, twist the thread block to separate the thread block from the thread groove, and the core rod can be directly pulled out from the core body. At the same time, the core spring is pulled out at the same time, and the side panel is moved to mobilize the insertion rod to leave the engagement groove. In this way, the core spring can be replaced. The operation is convenient and quick, and the installation is also relatively labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of the overall structure of the utility model (partial cutaway state of the core);

[0020] Figure 3 It is an exploded view of the core rod and core spring connection structure of the utility model;

[0021] Figure 4 It is a three-dimensional diagram of the connection structure of the core spring, the fixed installation block and the threaded block of the utility model;

[0022] Figure 5 It is an exploded view of the connection structure between the core rod and the limit block of the utility model;

[0023] Figure 6 It is a stereoscopic diagram of the connection structure between the fixed installation block (partially cut away) and the core rod of the utility model.

[0024] Description of reference numerals:

[0025] 1. Core cap; 2. Core body; 3. Core rod; 4. Core spring; 5. Sealing ring; 6. Core seat; 7. Sealing gasket; 8. Limit block; 9. Screw; 10. Thread groove one; 11. Disassembly and replacement assembly; 111. Thread block; 112. Thread groove two; 113. Fixed installation block; 114. Notch; 115. Side panel; 116. Insert rod; 117. Spring; 118. Engagement groove. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] The utility model provides Figure 1-6 The improved valve core structure shown in the figure includes a core cap 1, which is fixedly connected to a core body 2, and a sealing ring 5 is fixedly sleeved on the outer wall of the core body 2, and a core rod 3 is movably connected to the inside of the core body 2, and a limit block 8 is movably installed on the top of the core rod 3 through a screw 9, and a core seat 6 is fixedly connected to the bottom of the core rod 3, and a sealing gasket 7 is embedded in the core seat 6, and the core seat 6 is movably connected to the bottom of the core body 2, and also includes:

[0028] The replacement component 11 has a second thread groove 112 reserved inside the core body 2, and the inner circle of the second thread groove 112 is threadedly connected with a thread block 111, and the thread block 111 is movably connected to a fixed installation block 113 mounted on the outer wall of the core rod 3 through a core spring 4.

[0029] The end of the limit block 8 is fixedly connected with a screw 9, and the screw 9 matches the threaded groove 10 reserved at the top of the core rod 3, so that the core rod 3 can be pulled out from the core body 2 after the limit block 8 is twisted and removed.

[0030] An annular hollow area is provided inside the threaded block 111, and the core rod 3 passes through the hollow area reserved inside the threaded block 111, and a square toggle block is fixedly connected to the annular inner wall of the threaded block 111. The toggle block does not contact the core rod 3, which makes it convenient to toggle the toggle block to mobilize the movement of the threaded block 111, thereby driving the separation of the entire core spring 4 and the core body 2.

[0031] The lower end of the core spring 4 is fixedly connected to the inner wall of the threaded block 111, and the upper end of the core spring 4 is fixedly connected to the bottom wall of the fixed mounting block 113. The threaded block 111 and the fixed mounting block 113 movably mounted on the core rod 3 ensure the subsequent replaceable installation of the core spring 4, and the core spring 4 is conical.

[0032] A columnar through hole is reserved inside the fixed installation block 113, and the core rod 3 passes through the through hole, which facilitates the installation of the fixed installation block 113 and the core rod 3, that is, facilitates the movable installation of the core spring 4 and the core rod 3.

[0033] Two symmetrical notches 114 are reserved inside the fixed installation block 113 , and three sides of the notch 114 are open. A side plate 115 is movably connected inside the notch 114 via a spring 117 .

[0034] The outer wall of the side plate 115 is fixedly connected with a square plug rod 116, which is located in the inner circle of the spring 117, and the plug rod 116 extends through the through hole reserved inside the fixed mounting block 113, and the end of the plug rod 116 matches the engagement groove 118 reserved inside the core rod 3. The side plate 115 is moved to drive the plug rod 116 to move and match the engagement groove 118, which facilitates the engagement installation of the fixed mounting block 113 and the core rod 3, and ensures the normal use of the subsequent core spring 4.

[0035] Working principle: when using an improved valve core structure, first, by twisting the limit block 8, the limit block 8 and the screw 9 fixedly connected to the bottom of the limit block 8 are separated from the thread groove 10 at the top of the core rod 3, and then the core rod 3 is pressed downward to drive the core seat 6 fixedly connected to the core rod 3 to move downward synchronously. The core seat 6 moves downward and leaves a gap with the bottom of the core body 2. At this time, the gap can be passed through to twist the shift block fixedly connected to the inner wall of the thread block 111, so that the thread block 111 is rotated and separated from the thread groove 112 reserved at the bottom of the core body 2. At this time, it is convenient to directly and synchronously pull out the core rod 3 as a whole and the fixed mounting block 113 movably installed on the outer wall of the core rod 3 from the inside of the core body 2. At this time, the core spring 4 fixedly connected to the fixed mounting block 113 and the thread block 111 is pulled out at the same time, and then the side plate 115 is shifted to mobilize the plug rod 116 to leave the inside of the engaging groove 118. There is no connecting piece between the core rod 3 and the thread block 111, so that the core spring 4 can be removed and replaced;

[0036] When installing a new core spring 4, the side plate 115 is moved in the same manner as the above operation steps to install the core rod 3 inserted into the fixed mounting block 113 and the fixed mounting block 113 through the insertion rod 116, so that the core rod 3 and the core spring 4 are matched, and then the core rod 3 is inserted into the core body 2 from bottom to top, and the top of the core rod 3 protrudes from the core body 2. The part is threadedly connected to the upper limit block 8, and then the thread block 111 is twisted so that the thread block 111 matches the thread groove 112 reserved at the bottom of the core body 2, and the assembly of the entire valve core is completed.

[0037] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An improved valve core structure, comprising a core cap (1), characterized in that: The core cap (1) is fixedly connected to the core body (2), and a sealing ring (5) is fixedly sleeved on the outer wall of the core body (2), and a core rod (3) is movably connected to the inside of the core body (2), a limit block (8) is movably mounted on the top of the core rod (3) via a screw (9), a core seat (6) is fixedly connected to the bottom of the core rod (3), and a sealing gasket (7) is embedded in the core seat (6), and the core seat (6) is movably connected to the bottom of the core body (2), and further comprises: A disassembly component (11), wherein a second thread groove (112) is reserved inside the core body (2), and a thread block (111) is threadedly connected to the inner circle of the second thread groove (112), and the thread block (111) is movably connected to a fixed installation block (113) mounted on the outer wall of the core rod (3) via a core spring (4); A columnar through hole is reserved inside the fixed installation block (113), and the core rod (3) passes through the through hole. Two symmetrical notches (114) are reserved inside the fixed installation block (113), and the three sides of the notch (114) are open. A side plate (115) is movably connected to the notch (114) via a spring (117). A square plug rod (116) is fixedly connected to the outer wall of the side plate (115). The plug rod (116) is located at the inner circle of the spring (117), and the plug rod (116) extends through the through hole reserved inside the fixed installation block (113), and the end of the plug rod (116) matches the engagement groove (118) reserved inside the core rod (3).

2. The improved valve core structure according to claim 1, characterized in that: The end of the limit block (8) is fixedly connected with a screw (9), and the screw (9) matches a threaded groove (10) reserved at the top of the core rod (3).

3. The improved valve core structure according to claim 1, characterized in that: An annular hollow area is provided inside the threaded block (111), the core rod (3) passes through the hollow area reserved inside the threaded block (111), and a square toggle block is fixedly connected to the annular inner wall of the threaded block (111), and the toggle block does not contact the core rod (3).

4. The improved valve core structure according to claim 3, characterized in that: The lower end of the core spring (4) is fixedly connected to the inner wall of the threaded block (111), the upper end of the core spring (4) is fixedly connected to the bottom wall of the fixed installation block (113), and the core spring (4) is conical.

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