Material door device of dry-mixed mortar mixer
By introducing the first limiting device, the supporting device and the second limiting device into the material door device of the dry-mix mortar mixer, the problems of poor door sealing, short cylinder life and high cost are solved, achieving better sealing, Longer cylinder life and lower costs.
Patent Information
- Application Number
- CN202323550396.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2033-12-26
AI Technical Summary
The existing dry-mixed mortar mixer material door devices have problems such as poor sealing, short cylinder life and high cost, which are mainly caused by mismatch of the door shaft bending, bearing downward movement and cylinder stroke limit.
A material door device including a first limiting device, a supporting device and a second limiting device is designed. The first limiting device fixes the UCFU end bearing seat through a top block and bolts, the supporting device supports the middle part of the material door shaft through a bracket and a semicircular sleeve, and the second limiting device limits the rotation angle of the material door through a limiting block and a buffer rubber pad.
It effectively prevents the material door shaft from bending and the bearing from moving downward, and improves the sealing between the material door and the material port; it limits the cylinder stroke and extends the cylinder life; there is no need to specially customize the cylinder, reducing costs.
Smart Images
Figure CN222371946U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a material door device for a dry-mix mortar mixer and belongs to the technical field of mixers. Background Art
[0002] A dry mortar mixer is a mechanical device that mixes sand, solid admixtures, admixtures, cement, etc. and mixes them into a dry powder mixture. The device under the dry mortar mixer that controls the movement of the door through a cylinder to achieve the closing and opening of the mixer is called a material door device. Figure 1 As shown, the material port of the dry-mix mortar mixer is located below the arc plate of the shell. Depending on the size of the mixer, 1 to 3 material ports are arranged side by side. A corresponding number of material door bodies are fixed on a material door shaft. The two ends of the material door shaft are fixed to the end plates of the shell using UCFU end face bearing seats. The shaft head of the material door shaft is connected to the swing arm through a flat key, and the swing arm is connected to the cylinder through a hinge ear. The cylinder realizes the rotation of the material door shaft through telescopic movement to realize the opening and closing of the material door. The cylinder is the main mechanism for controlling the opening and closing of the material door. Cylinder damage accidents frequently occur during use; in addition, due to the long axial length of the material door and the heavy weight of the material door, the two ends are supported by bearings. Under long-term operation, the gravity of the material door will cause the middle of the material door shaft to bend downward, and the door body and the material port will gradually separate, resulting in the problem that the material door cannot be effectively sealed.
[0003] The materials mixed by the dry-mix mortar mixer are fine powder materials. During the mixing process, a large amount of sealing gas is filled into the shell, and the pressure is relatively high. If there is a small gap at this time, the material will leak out from the gap. Therefore, the seal between the material port and the material door device is particularly important. The material door seal is achieved by mechanically squeezing rubber. A seat is welded around the lower part of the shell material port, and the sealing strip is inserted into the seat. When the material door is closed, the door body squeezes the sealing strip to achieve the material door seal. The material door seal is generally debugged in place during the debugging stage, but during use, the material door seal is often not tight due to the mechanical squeezing rubber not being in place due to the downward movement of the material door bearing.
[0004] In addition, the material door opening and closing state of the material door device of the prior art is as follows Figure 2 As mentioned above, due to the heavy weight of the door body, when the door is open, if there is no external force, the door will rotate to the position as shown in the figure below due to gravity. Figure 2 As shown in the position, from the closed position to the open position, the door shaft needs to rotate about 110 degrees. At this time, the hinge point between the cylinder and the swing arm will also rotate 110 degrees, and the stroke of the cylinder will reach 400-500mm. In this case, the cylinder needs to be customized and has poor stability, high cost and short life.
[0005] In summary, the technical disadvantages of the existing technical solutions are:
[0006] (1) The axial length of the material door is long, and the weight of the material door is large. Both ends are supported by bearings. After long-term operation, the gravity of the material door will cause the middle of the material door axis to bend downward, and the door body and the material port will gradually separate, affecting the sealing performance;
[0007] (2) The two ends of the material door welding body are fixed in the oblong mounting holes of the shell by the bolts of the UCFU end face bearings. The vibration during operation and the gravity of the door body itself will cause the end face bearings to move the material door downward as a whole, and the door body and the material opening will gradually separate, affecting the sealing performance.
[0008] (3) When the mixer is stopped or the door is open during operation, the gravity of the door weld pulls the cylinder rod to its maximum length, that is, the door opening angle is limited by the cylinder's limit stroke. Continuous pulling force and impact during operation damage the door cylinder seal, resulting in frequent damage and replacement of the cylinder.
[0009] Therefore, there is an urgent need for a material door device for a dry-mix mortar mixer, which has good sealing performance between the material door and the material port, long service life of the material door cylinder, and low cost. Summary of the invention
[0010] The utility model aims to overcome the above-mentioned shortcomings and provide a material door device for a dry-mix mortar mixer, which has good sealing performance between the material door and the material port, long service life of the material door cylinder and low cost.
[0011] The purpose of the utility model is achieved in this way:
[0012] A material door device for a dry-mix mortar mixer comprises a mixer shell and a material door shaft installed on the shell end plate using UCFU end face bearing seats at both ends; a material door is installed on the material door shaft, and the shaft head of the material door shaft is connected to a swing arm via a flat key; a cylinder is hingedly connected between the swing arm and the shell end plate, a first limit device for resisting the UCFU end face bearing seat is installed on the shell end plate, and a supporting device for supporting the middle part of the material door shaft and a second limit device for limiting the opening rotation of the material door are installed on the shell side plate.
[0013] Furthermore, the first limiting device includes a top block fixedly mounted on the end plate of the shell, on which a bolt for tightening the UCFU end face bearing seat is threadedly installed, and a nut for locking the bolt position is screwed on the bolt.
[0014] Furthermore, the number of the top blocks is not less than two.
[0015] Furthermore, the supporting device includes a bracket fixedly mounted on the bottom of the side plate of the shell, and the bracket is provided with a semicircular sleeve that supports the middle position of the material door shaft.
[0016] Furthermore, the number of the brackets is not less than one, and all are arranged at equally divided positions in the middle section of the material gate shaft.
[0017] Furthermore, the second limiting device includes a limiting block fixedly mounted on the bottom of the side plate of the shell, and a buffer rubber pad is provided on the limiting block for limiting the rotation of the material door.
[0018] Furthermore, the second limiting device limits the rotation angle range of the material door from the closed state to the open state to 95 degrees.
[0019] Furthermore, the material door is fixed on the material door shaft through a material door arm.
[0020] Compared with the prior art, the beneficial effects of the utility model are:
[0021] The utility model provides a first limiting device on the end plate of the mixer shell to support the UCFU end face bearing seats at both ends of the material door shaft and prevent the sliding of the first limiting device, thereby avoiding the sliding of the two ends of the material door shaft to cause the material door and the material port to not match and cause sealing problems; a supporting device that supports the middle section of the material door shaft is installed on the side plate of the shell to prevent the sealing problem caused by the bending deformation of the material door shaft due to the heavy weight of the material door; a second limiting device is installed on the side plate of the shell to limit the maximum opening angle of the material door, so that the rotation range of the material door does not exceed the stroke limit of the cylinder, thereby protecting the cylinder seal and extending the service life of the cylinder. At the same time, there is no need to specially customize the cylinder, which reduces the frequency of cylinder replacement and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 The present invention is a structural schematic diagram of a material door device of an existing dry-mix mortar mixer.
[0023] Figure 2 The diagram is a rotation state diagram of the opening and closing door of the material door device of the existing dry-mix mortar mixer.
[0024] Figure 3 The utility model is a structural schematic diagram of a material door device of a dry-mix mortar mixer.
[0025] Figure 4 The utility model is a schematic diagram of the structure of a first limit device of a material door device of a dry-mix mortar mixer.
[0026] Figure 5 The utility model is a schematic diagram of the structure of a support device of a material door device of a dry-mix mortar mixer.
[0027] Figure 6 The utility model is a schematic diagram of the structure of a second limit device of a material door device of a dry-mix mortar mixer.
[0028] Figure 7 The utility model is a schematic diagram of the rotation state of the opening and closing door of the material door device of the dry-mix mortar mixer.
[0029] Figure 8The utility model is a schematic diagram of the material door installation structure of a material door device of a dry-mix mortar mixer.
[0030] in:
[0031] Shell 1, material door shaft 2, swing arm 3, cylinder 4, material door 5, first limit device 6, support device 7, second limit device 8;
[0032] The material gate arm 51 , the top block 61 , the bolt 62 , the nut 63 , the bracket 71 , the semicircular sleeve 72 , the limit block 81 , and the rubber pad 82 . DETAILED DESCRIPTION
[0033] See also Figure 3 to Figure 8 The utility model relates to a material door device for a dry-mixed mortar mixer, comprising a mixer housing 1, a material door shaft 2 with UCFU end face bearing seats at both ends mounted on the end plate of the housing 1; a material door 5 is fixedly mounted on the material door shaft 2 through a material door arm 51, and a swing arm 3 is connected to the shaft head of the material door shaft 2 through a flat key; a cylinder 4 is hingedly connected between the swing arm 3 and the end plate of the housing 1, a first limit device 6 for resisting the UCFU end face bearing seat is mounted on the end plate of the housing 1, and a support device 7 for supporting the middle part of the material door shaft 2 and a second limit device 8 for opening and rotating the material door 5 are mounted on the side plate of the housing 1;
[0034] The first limiting device 6 comprises a top block 61 fixedly mounted on the end plate of the shell 1, a bolt 62 for tightening the UCFU end face bearing seat is screwed on the top block 61 through a thread, and a nut 63 for locking the position of the bolt 62 is screwed on the bolt 62; the number of top blocks 61 can be selected according to the width of the UCFU end face bearing seat, such as three, but in order to ensure that the top block 61 is stably tightened against the UCFU end face bearing seat, the number of top blocks 61 should not be less than two; during the installation and commissioning of the material door shaft 2, after adjusting the upper and lower positions of the material door 5, the bolt 62 is pressed against the UCFU end face bearing seat and the nut 63 is locked to prevent the bearing seat from sliding and causing the material door 5 to move downward as a whole and cause sealing problems;
[0035] The support device 7 includes a bracket 71 fixed to the bottom of the side plate of the shell 1, and a semicircular sleeve 72 is provided on the bracket 71 to support the middle position of the material gate shaft 2; the bracket 71 is set according to the length of the middle span of the material gate shaft 2. If the middle span of the material gate shaft 2 is short, one bracket 71 can be set, and the position is in the middle position of the middle section of the material gate shaft 2; if the middle span of the material gate shaft 2 is long, two brackets 71 can be set, and they are respectively located at the three-division point position of the middle section of the material gate shaft 2. Since the material gate 5 installed on the material gate shaft 2 is heavy, the support device 7 is set in the middle section of the material gate shaft 2 to support the material gate shaft 2, which can effectively prevent the material gate shaft 2 from deforming and causing sealing problems;
[0036] The second limiting device 8 comprises a limiting block 81 fixedly mounted on the bottom of the side plate of the shell 1, and a buffer rubber pad 82 is provided on the limiting block 81, which is used to limit the rotation of the material door 5, that is, when the material door 5 is opened, it collides with the limiting block 81 to stop the material door 5 from rotating further, and the rubber pad 82 can prevent the material door 5 from colliding with the limiting block 81 and generating impact and abnormal sound; the second limiting device 8 limits the rotation angle range of the material door 5 from the closed state to the open state to 95 degrees, that is, the rotation angle of the material door shaft 2 is 95 degrees, see Figure 7 Regardless of whether the material door 5 is in the open state or the closed state, the cylinder 4 does not reach the stroke limit, ensuring that the cylinder seal is not damaged and its service life is increased. At the same time, there is no need to specially customize the cylinder or frequently replace the cylinder, and the cost is effectively controlled.
[0037] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.
Claims
1. A material gate device for a dry-mix mortar mixer, comprising a mixer housing (1), a material gate shaft (2) with UCFU end face bearing seats at both ends mounted on the end plates of the housing (1); a material gate (5) is mounted on the material gate shaft (2), and the shaft head of the material gate shaft (2) is connected to a swing arm (3) via a flat key; a cylinder (4) is hingedly connected between the swing arm (3) and the end plate of the housing (1), characterized in that: A first limiting device (6) for abutting against the UCFU end face bearing seat is installed on the end plate of the shell (1), and a supporting device (7) for supporting the middle part of the material door shaft (2) and a second limiting device (8) for limiting the opening rotation of the material door (5) are installed on the side plate of the shell (1).
2. The material gate device of the dry-mix mortar mixer according to claim 1 is characterized in that: The first limiting device (6) comprises a top block (61) fixedly mounted on the end plate of the housing (1), a bolt (62) for tightening the UCFU end face bearing seat being screwed onto the top block (61) through a thread, and a nut (63) screwed onto the bolt (62) for locking the bolt (62) in position.
3. The material gate device of the dry-mix mortar mixer according to claim 2 is characterized in that: The number of the top blocks (61) is not less than two.
4. The material gate device of the dry-mix mortar mixer according to claim 1, characterized in that: The supporting device (7) comprises a bracket (71) fixedly mounted on the bottom of the side plate of the housing (1), and a semicircular sleeve (72) is provided on the bracket (71) for supporting the middle position of the material gate shaft (2).
5. The material gate device of the dry-mix mortar mixer according to claim 4 is characterized in that: The number of the brackets (71) is not less than one, and all are arranged at equally divided positions in the middle section of the material gate shaft (2).
6. The material gate device of the dry-mix mortar mixer according to claim 1, characterized in that: The second limiting device (8) comprises a limiting block (81) fixedly mounted on the bottom of the side plate of the housing (1), and a buffer rubber pad (82) is provided on the limiting block (81) for limiting the rotation of the material door (5).
7. The material gate device of the dry-mix mortar mixer according to claim 6, characterized in that: The second limiting device (8) limits the rotation angle range of the material door (5) from the closed state to the open state to 95 degrees.
8. The material gate device of a dry-mix mortar mixer according to claim 1, characterized in that: The material door (5) is fixedly mounted on the material door shaft (2) via a material door arm (51).