An internal mixer feeding door adjustable sealing device

Abstract

The utility model discloses a kind of mixer feeding door adjustable sealing devices, it is related to mixer feeding door technical field, comprising: multiple groups are installed on the adjusting sealing mechanism of feeding door, the adjusting sealing mechanism includes spring support, double guide top block is slidably nested in the inside of spring support, two spiral compression springs are sleeved on the double guide top block, the end of double guide top block away from spiral compression spring is connected with sealing block, two nuts are fixed on the spring support, adjusting screw is nested in the two nuts, the tail end of adjusting screw extends to spring support and is connected with baffle sleeve.The utility model can realize the adjustment of sealing force by the screwing amount of adjusting screw, simple and convenient to operate, and the design of multiple adjusting sealing mechanisms can independently adjust according to the sealing requirement of different positions of feeding door, effectively solve the problem that sealing block each section wears or deforms inconsistently in the movement process of feeding door.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of internal mixer feeding door, specifically relates to a kind of adjustable sealing device of internal mixer feeding door. BACKGROUND

[0002] Internal mixer is the core equipment of polymer material such as rubber, plastic, and its feeding door as the key component of material input and closed mixing, needs to have reliable sealing performance to prevent material leakage, dust overflow or heat loss.

[0003] Traditional feeding door sealing device is mostly cylindrical helical compression spring with sealing block direct contact, and its principle is to control the gap between sealing block and feeding cylinder wallboard by spring force of spring, wherein there are many uncontrollable factors, such as internal mixer feeding door needs to move back and forth in production process, sealing block wear, deformation due to the spring force of spring is limited to cause sealing surface to fit not closely, cause material leakage. At the same time, spring force failure after a certain period of use of spring, also can cause sealing surface to fit not closely. SUMMARY

[0004] The utility model aims at providing a kind of adjustable sealing device of internal mixer feeding door to solve the problems raised in the above background.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a kind of adjustable sealing device of internal mixer feeding door, comprising: Multiple groups of adjusting sealing mechanism installed on feeding door, the adjusting sealing mechanism includes spring support, double guide top block is slidably nested in the inside of spring support, two helical compression springs are sleeved on the double guide top block, sealing block is connected to the end of double guide top block away from helical compression spring, two nuts are fixed on the spring support, adjusting screw is nested in the two nuts, the tail end of adjusting screw extends into spring support and is connected with stop block sleeve, the stop block sleeve is in contact with helical compression spring.

[0006] Further, a moving cavity is formed in the inside of spring support, two spring adjusting cavities are formed on the side close to nut of moving cavity, insertion hole is formed at the end away from moving cavity of two spring adjusting cavities, the diameter of insertion hole is less than the diameter of spring adjusting cavity; The double guide top block includes connecting block, two guide rods are symmetrically fixed on the connecting block, two guide rods are fixed and penetrate connecting block, the rod body of guide rod on both sides of connecting block is first needle and second needle respectively; The connecting block is slidingly nested in the moving cavity, the first ejector pin is slidingly nested in the spring adjusting cavity, and the helical compression spring is sleeved on the corresponding first ejector pin, so that the correct installation and stable work of the helical compression spring are ensured.

[0007] Further, the stop sleeve is slidingly nested in the spring adjusting cavity, so that the stop sleeve can freely slide in the spring adjusting cavity and flexibly abut against the helical compression spring when the adjusting screw is screwed in, the spring compression amount is accurately adjusted, the inner cavity diameter of the stop sleeve is greater than the cross-sectional circular diameter of the first ejector pin, the relative movement between the stop sleeve and the first ejector pin is ensured, and interference between the stop sleeve and the first ejector pin is prevented, so that the smoothness and reliability of the whole adjusting process are ensured.

[0008] Further, the two nuts are respectively fixed at the outer end ports of the two insertion holes, and the position of the adjusting screw is slidingly inserted into the insertion hole, so that the adjusting screw can freely slide in the insertion hole, and the spring compression amount is accurately adjusted.

[0009] Further, the side, away from the helical compression spring, of the connecting block abuts against the sealing block, and the second ejector pin is inserted into the sealing block, so that the transverse movement and longitudinal movement of the sealing block are limited, and irregular wear caused by irregular free movement of the sealing block is reduced.

[0010] Further, the helical compression spring is a flat cross-section cylindrical helical compression spring, the flat cross-section cylindrical helical compression spring has the characteristics of large energy storage and large compression amount, and can realize larger adjustment amount and better adapt to the sealing requirement of the sealing block under the conditions of wear and deformation of the charging door sealing block.

[0011] Further, the spring support is connected with the charging door through bolts, so that the device is simple and convenient to install on the charging door, and is firmly and stably connected, and can maintain a stable position and posture during the movement of the charging door.

[0012] In the above technical scheme, the technical effects and advantages of the present application are provided: 1. The design of the multiple sets of adjusting sealing mechanisms can independently adjust the sealing requirement of different positions of the charging door, effectively solve the problem that the wear or deformation of the sealing block is inconsistent during the movement of the charging door, realize more uniform and reliable sealing, and prevent material leakage, dust overflow or heat loss; 2. The helical compression spring is a flat cross-section cylindrical helical compression spring, the flat cross-section cylindrical helical compression spring has the characteristics of large energy storage and large compression amount, can maintain stable spring force output within a longer service life, reduces the sealing problem caused by spring failure, and reduces the maintenance frequency of the equipment; 3、The spring force of the helical compression spring can be dynamically compensated with the wear of the sealing block, the spring force can be continuously generated by adjusting the screw-in amount of the adjusting screw, the sealing block and the feeding cylinder wall plate are always kept in close contact, and good sealing effect can be maintained even in long-term use; 4、The sealing force can be adjusted by adjusting the screw-in amount of the adjusting screw, the operation is simple and convenient, the spring support is connected with the feeding door through bolts, the device is simple and convenient to install, is convenient for later maintenance and replacement, the whole device is compact in structure, occupies small space, is convenient for installation and arrangement in the limited space of the feeding door of the internal mixer, and does not affect the overall layout and operation of the equipment; 5、The second ejector pin of the double guide ejector block is inserted into the sealing block, the transverse and longitudinal movement of the sealing block is limited, the irregular free movement of the sealing block is reduced, and the wear speed of the sealing block is reduced, thereby prolonging the service life of the sealing block. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0014] Figure 1 It is a structural schematic view of the present application; Figure 2 It is a sectional view of the spring support of the present application; Figure 3 It is a schematic view of the double guide ejector block of the present application; Figure 4 It is a front view of the double guide ejector block of the present application; Figure 5 It is a sectional view of the stop block sleeve of the present application; Figure 6 It is a schematic view of the present application installed on the feeding door.

[0015] Mark explanation: 1、spring support; 2、double guide ejector block; 3、helical compression spring; 4、sealing block; 5、nut; 6、adjusting screw; 7、stop block sleeve; 8、moving cavity; 9、spring adjusting cavity; 10、insertion hole; 11、connecting block; 12、guide rod; 13、first ejector pin; 14、second ejector pin. DETAILED DESCRIPTION

[0016] In order to make those skilled in the art better understand the technical scheme of the present application, the present application will be further described in detail below with reference to the drawings.

[0017] The utility model provides a kind of mixer feeding door adjustable sealing device as shown in Figures 1 to 6 It include: Multiple groups are installed on the adjusting sealing mechanism of feeding door, adjusting sealing mechanism includes spring support 1, the inside sliding nest of spring support 1 has double guide top block 2, double guide top block 2 is sleeved with two helical compression springs 3, the end of double guide top block 2 away from helical compression spring 3 is connected with sealing block 4, two nuts 5 are fixed on spring support 1, two nuts 5 are all nested with adjusting screw 6, the tail end of adjusting screw 6 extends into spring support 1 and is connected with stop block sleeve 7, stop block sleeve 7 is in contact with helical compression spring 3.

[0018] Spring support 1 is internally provided with moving cavity 8, two spring adjusting cavities 9 are formed on the side of moving cavity 8 close to nut 5, the end of two spring adjusting cavities 9 away from moving cavity 8 is provided with insertion hole 10, the diameter of insertion hole 10 is less than the diameter of spring adjusting cavity 9; Double guide top block 2 includes connecting block 11, two guide rods 12 are fixed symmetrically on connecting block 11, two guide rods 12 are all fixedly penetrated through connecting block 11, the rod body of guide rod 12 on the both sides of connecting block 11 is first needle 13 and second needle 14 respectively; Connecting block 11 is slidingly nested in moving cavity 8, first needle 13 is slidingly nested in spring adjusting cavity 9, helical compression spring 3 is sleeved on corresponding first needle 13, to ensure the correct installation and stable work of helical compression spring 3.

[0019] Stop block sleeve 7 is slidingly nested in spring adjusting cavity 9, so that stop block sleeve 7 can freely slide in spring adjusting cavity 9, so that it can be in contact with helical compression spring 3 flexibly when adjusting screw 6 is screwed in, to realize the accurate adjustment of spring compression amount, the inner cavity diameter of stop block sleeve 7 is greater than the cross-sectional circle diameter of first needle 13, which not only ensures that there is enough space for relative movement between stop block sleeve 7 and first needle 13, but also prevents interference between stop block sleeve 7 and first needle 13, to ensure the smoothness and reliability of the whole adjustment process.

[0020] Two nuts 5 are fixed at the outer end ports of two insertion holes 10 respectively, the position of adjusting screw 6 is slidingly penetrated into insertion hole 10, so that adjusting screw 6 can freely slide in insertion hole 10, to realize the accurate adjustment of spring compression amount.

[0021] The side of connecting block 11 away from helical compression spring 3 is in contact with sealing block 4, second needle 14 is inserted into sealing block 4, to limit the transverse movement and longitudinal movement of sealing block 4, and reduce the irregular wear caused by irregular free movement of sealing block 4.

[0022] The helical compression spring 3 adopts a flat-section cylindrical helical compression spring, and the flat-section cylindrical helical compression spring has the characteristics of large energy storage and large compression amount, and can realize larger adjustment amount and better adapt to the sealing requirement under the conditions of wear and deformation of the sealing block 4 of the charging door.

[0023] The spring support 1 is connected with the charging door through bolts, so that the device is simple and convenient to install on the charging door, and is stable and reliable in connection, and can keep stable position and posture during movement of the charging door.

[0024] In the utility model, the adjusting sealing mechanism is composed of the spring support 1, the double guide top block 2, the two helical compression springs 3, the sealing block 4, the two nuts 5, the two adjusting screws 6 and the two block sleeves 7, the helical compression spring 3 is deformed by adjusting the screwing amount of the adjusting screw 6, a spring force is obtained after the helical compression spring 3 is deformed, the spring force of the helical compression spring 3 directly acts on the double guide top block 2, the connecting block 11 of the double guide top block 2 directly contacts the sealing block 4, the spring force of the helical compression spring 3 directly acts on the sealing block 4 through transmission, and the sealing block 4 is tightly attached to the wall plate of the charging cylinder to form a seal. During use of the equipment, the sealing block 4 will be worn, the helical compression spring 3 generates a spring force to compensate, and the sealing block 4 will continue to contact the wall plate of the charging cylinder to form a seal, but the spring force generated by the helical compression spring 3 is limited, so the screwing amount of the adjusting screw 6 is adjusted to make the helical compression spring 3 continue to generate a spring force to compensate for the wear of the sealing block 4.

[0025] Since the wear or deformation of the sealing block 4 is inconsistent during movement of the charging door, a plurality of adjusting sealing mechanisms are arranged on the charging door, and reliable sealing can be realized through the plurality of adjusting sealing mechanisms.

[0026] The above only describes certain exemplary embodiments of the utility model in a descriptive manner, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the utility model for ordinary skilled persons in the art. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the utility model claims.

Claims

1. An adjustable sealing device for the feed gate of an internal mixer, characterized in that, include: Multiple sets of adjusting sealing mechanisms are installed on the feeding gate. The adjusting sealing mechanism includes a spring support (1). A double guide block (2) is slidably nested inside the spring support (1). Two spiral compression springs (3) are sleeved on the double guide block (2). A sealing block (4) is connected to one end of the double guide block (2) away from the spiral compression springs (3). Two nuts (5) are fixed on the spring support (1). An adjusting screw (6) is nested inside each of the two nuts (5). The tail end of the adjusting screw (6) extends into the spring support (1) and is connected to a stop sleeve (7). The stop sleeve (7) abuts against the spiral compression springs (3).

2. The adjustable sealing device for the feed gate of a mixer according to claim 1, characterized in that: The spring support (1) has a movable cavity (8) inside. Two spring adjustment cavities (9) are opened on the side of the movable cavity (8) near the nut (5). An insertion hole (10) is opened at the end of the two spring adjustment cavities (9) away from the movable cavity (8). The diameter of the insertion hole (10) is smaller than the diameter of the spring adjustment cavity (9). The double-linked guide block (2) includes a connecting block (11), on which two guide rods (12) are symmetrically fixed. Both guide rods (12) are fixed through the connecting block (11). The rods of the guide rods (12) located on both sides of the connecting block (11) are the first pin (13) and the second pin (14). The connecting block (11) is slidably nested in the moving cavity (8), the first ejector pin (13) is slidably nested in the spring adjusting cavity (9), and the spiral compression spring (3) is sleeved on the corresponding first ejector pin (13).

3. The adjustable sealing device for the feed gate of a mixer according to claim 2, characterized in that: The stop sleeve (7) is slidably nested in the spring adjustment cavity (9), and the inner diameter of the stop sleeve (7) is greater than the cross-sectional circle diameter of the first ejector pin (13).

4. The adjustable sealing device for the feed gate of a mixer according to claim 2, characterized in that: The two nuts (5) are respectively fixed at the outer end ports of the two insertion holes (10), and the position of the adjusting screw (6) slides through the insertion hole (10).

5. The adjustable sealing device for the feed gate of a mixer according to claim 2, characterized in that: The side of the connecting block (11) away from the helical compression spring (3) abuts against the sealing block (4), and the second pin (14) is inserted into the sealing block (4).

6. The adjustable sealing device for the feed gate of a mixer according to claim 1, characterized in that: The spiral compression spring (3) is a flat cross-section cylindrical spiral compression spring.

7. The adjustable sealing device for the feed gate of a mixer according to claim 1, characterized in that: The spring support (1) is connected to the feeding gate by bolts.

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